CMDA Building Regulation for Residential Buildings

The Latest Building Regulations (also called Development Control Regulation of DCR) as defined and amended by CMDA periodically for Residential Building is framed based on infrastructure limitation, width of road, quality of street life, quality of life for inhabitants, safety, holding capacity, detail development plan, area development plan etc…

At a document level, CMDA does not have a booklet specifically for residential buildings. However, CMDA puts all the rules together. This may make life difficult for millions of individuals who want to look for only for their building type (like residential, flats, office, commercial, institutional etc…) We have tabled below only the relevant parts for your understanding. We suggest that you look at the official CMDA site for updated and accurate information.

So if you are planning to build an apartment complex, adhering to the rules mentioned below, you are more likely to get your building plan approved easily and quickly. CMDA has introduced the Green Channel of approval for some particular types of development that would save you time!

CMDA Building Regulation for Residential Apartments / Individual Houses

25. Planning Parameters:

 

The extent of the site, plot coverage, FSI, set back etc. for the developments shall be regulated according to the tables below:

 

 

Table (1) Ordinary Residential Buildings and other small developments

 

• Ordinary residential / predominantly residential buildings, Clinics, dispensaries, nursing homes with floor area not exceeding 300 sq.m. and G+1 floor in height.

 

• Working women hostels / old age homes with floor area not exceeding 500 sq.m. and G+1 floor in height.

 

• Corporate / Institution Guesthouses with floor area not exceeding 300 sq.m. and G+1 floor in height.

 

• Cottage industries (with number of workers not exceeding 8 and electric machineries not exceeding 5 H.P.) with floor area not exceeding 300 sq.m. and G+1 floor in height.

 

• Nursery schools, primary schools with floor area not exceeding 300 sq.m.

 

• Reading rooms, libraries, Post office, EB Office, telegraphic office, Local body maintenance offices with floor area not exceeding 300 sq.m.

 

		Continuous					Residential in
	Description	Building					Economically Weaker
Sl.No		Area	Rest of CMA except CBA				Section areas
		anywhere					Chennai	in other
		within CMA					City	areas
1	2	3	4				5a	5b
A	Minimum	50	80 sq.m				20 sq.m.	40sq.m.
	Plot extent	sq.m.
	Minimum
B	Plot width/	4.5m	6m				4m	4m
	frontage
C	Minimum	–	6m			–		–
	Road width
	Maximum	G+1 or Stilt
D	Height	+2 floors	G+1 or Stilt +2 floors subject to a				G+1 subject to a
		subject to a	max. of 9m				max. of 7 m
		max. of 9m
E	Maximum	1.5	1.5			1.5		1.5
	FSI
F	Maximum	75%	70%			75%		75%
	Plot coverage
G	Minimum	Where  Street  Alignment/new  road  is  prescribed  in  these
		regulations, it shall be from		that street alignment/ new road line.
	Setbacks
		In the case of others, it shall be from the property boundary.
			Abutting Road		Set back
			Width
			Up to 10m		1.5m
(i)	Front	1.5m	Above 10m, up to		3.0m		1m	1m
	Set back		15.25m
			Above 15.25m,		4.5m
			up to 30.5m
			Above 30.5m		6.0m

 

				Plot Width		Side set back
				Up to 6m		1m on one side
	Side Set
(ii)		Nil		Above 6m, up to		1.5m on one		Nil	Nil
	back			9m		side
				Above 9m		1.5m on either
						side
				1.5m				1m	1m
	Rear Set			In Rear set back, structures like lavatory, lumber room,
(iii)		Nil		garage etc. not intended for human habitation and servant
	back
				quarters are permissible provided it doesn’t occupy more
				than one third of the plot width, 6m from rear boundary
				and 4 metres in height from ground level.
H	Other structures permissible in the minimum prescribed Front set back, Side set
	back, and Rear set back are as given in the regulation No 11.
I	Parking spaces shall be provided within the site conforming to the regulations
	given in the Annexure XVI.
J	The minimum width of corridor shall be as given in the Annexure XVII.
K	Rainwater harvesting provisions as prescribed in the Annexure XIX shall be
	provided.

 

 

Note:    (i) In CBA, there shall be atleast 1m wide internal passage from rear to front in Ground floor, directly accessible to road.

 

^♣(ii) In cases of Residential or predominantly residential developments, –

 

• where dwelling units for Economically Weaker Sections do not exceed 30 sq.m in floor area each, 50% of normally permissible FSI is additionally allowable over and above the normally permissible FSI; and

 

• where dwelling units for Low Income Group do not exceed 50 sq.m in floor area each, 30% of normally permissible FSI is additionally allowable over and above the normally permissible FSI;

 

Provided that the developer or promoter or owner shall not sell these dwellings for other than the said purposes and no conversion or amalgamation shall be

permissible in these cases of lower income group dwellings. ^♣

 

 

 

26. Regulation for Special Buildings:

 

• “ Special Buildings” means

 

1. a residential or commercial buildings with more than 2 floors; or

 

1. a residential building with more than six dwelling units; or

 

1. a commercial building exceeding a floor area of 300 square metres:

 

Provided that any construction in the second floor with prior permission as an addition to an existing ground and first storeyed authorised ordinary residential building which is three years old shall not be construed as a “Special Building”

 

• (a) The minimum width of the public road on which the site abuts or gains access shall be 10 mtrs.

 

Provided that if the extent of the site is more than 1100 sq.m. a special building for residential use may be permitted on a site abutting or gaining access from 9m. wide public road.

 

Provided further that special building for residential use may be permitted with limitation on maximum number of dwellings and / maximum height of the building on a site abutting or gaining access from 9 m wide public road subject to compliance of the planning parameters stated in the Tables under sub rule (3) below.

 

The minimum width stated above shall be the existing width of the road and not the street alignment prescribed.

 

Explanation:

 

• Road width means the road space as defined in DR no. 2 (35). The qualifying road width for permitting special building shall be available atleast for a stretch of 250m along the length of the road abutting the site and the stretch from a junction can be straight or a curve or zigzag or combination of the above.

 

To cite examples:

 

9. If the road over its general length is of 10 metres width, but because of some kinks in front of the site one end is 9.8 metres and the other end is 10.2 metres is acceptable.

 

1. If the general road is of width less than 10 metres width, but only widens opposite to or nearer to the site is more than 10 metres, is not acceptable.

 

1. If the road is generally of 10 metres width upto a considerable length on one side, but discontinues and narrows into a road of smaller width on the other side of the site in question and the plot owner is willing to leave enough space for continuity of 10 metres road in front of his site, this will have to be checked and decided on case-by-case.

 

1. If the general road width is less than 10 metres and the site owner merely agrees to leave enough space to have 10 metres in front of his site only, this is not acceptable.

 

• Road width measurements for the above purpose shall be of the road as designed and laid and the existence of unauthorized encroachments, for which no patta has been given, will not normally affect adversely provided the shortage in width in the min. stretch stated above does not exceed 10% of the min. prescribed width. However permissibility or otherwise (in exceptional cases) in such specific situations will be decided case-by-case.

 

 

 

 

 

 

• If the site does not directly abut a public road but gains access through a private exclusive passage or through a part of the plot which can be treated as a passage from a public road of minimum width as prescribed above, the minimum width of such passage shall be as follows:

 

Sl.No.	Description	Minimum width
	When it is intended to serve six dwellings or up to 600 square
(1)	metres of commercial building and the length of the passage	3.6 metres
	does not exceed 80 metres.
	When it is intended to serve upto 8 dwellings or upto 2,400
(2)	square metres of commercial building and the length of the	4.8 metres
	passage does not exceed 100 metres.
	When it is intended to serve not more than 10 dwellings or	7.2 metres
(3)	upto 3000 square metres of commercial building and the
	length of passage does not exceed 120 metres.
	When it is intended to serve not more than 20 dwellings or
(4)	up to 6000 square metres of commercial building and the	9.0 metres
	length of passage does not exceed 240 metres.
(5)	When it is intended to serve more than 20 dwellings or more	10.0metres
	than 6000 square metres of commercial building.

 

(3) The extent of site, FSI, Set back etc. for Residential / Predominantly residential Special buildings shall be regulated according to the tables below:

 

Table A

 

Description	Continuous Building Area anywhere within CMA
Max. no. of	8	12		–
dwelling units
Min. Road	9m		9m	10m
width
Min. Plot	50 sq.m.	80 sq.m.		80 sq.m.
Extent
Min. Plot		4.5m
Frontage
Max. Height	G+1 or Stilt+2 subject	G+2 or Stilt+3 subject		G+3 or Stilt+4 subject
	to a max. of 9m	to a max. of 12m		to a max. of 15.25m
Max. FSI		1.5
Minimum	Where Street Alignment/new road is prescribed in these regulations, it
	shall be from  that street alignment/ new road line.
Setbacks
	In case of others, it shall be from the property boundary.
	Abutting Road width			Set back
Min. FSB	15.25m and below			3.5m
	Above 15.25m & up to 30.5m			4.5m
	Above 30.5m			6m
Min. SSB on			Nil
either side
Min. RSB			Nil

 

Note: (i) For EWS housing development, the minimum plot extent shall be 20 sq.m within city and 40 sq.m. in the rest of CMA, frontage shall be minimum 4 m.

 

• In CBA, there shall be atleast 1m wide internal passage from rear to front in Ground floor, directly accessible to road

 

• (iii) In cases of Residential or predominantly residential developments, –

 

• where dwelling units for Economically Weaker Sections do not exceed 30 sq.m in floor area each, 50% of normally permissible FSI is additionally allowable over and above the normally permissible FSI; and

 

• where dwelling units for Low Income Group do not exceed 50 sq.m in floor area each, 30% of normally permissible FSI is additionally allowable over and above the normally permissible FSI;

 

Provided that the developer or promoter or owner shall not sell these dwellings for other than the said purposes and no conversion or amalgamation shall be

permissible in these cases of lower income group dwellings. ^♣

 

Table B

 

Description		Other areas in Chennai City, and the rest of CMA
Max. no. of	6		8				12
dwelling units
Min. Road width	9m		9m					9m
Min. Plot Extent	200 sq.m.	300	450 sq.m.			450		660 sq.m.
		sq.m.				sq.m.
Min. Plot	9m	9m	12m	15m		12m		15m	18m
Frontage
	G+2 or	G+1 or	G+2 or	G+3 or		G+1 or		G+2 or	G+3 or
	Stilt+3	Stilt+2	Stilt+3	Stilt+4		Stilt+2		Stilt+3	Stilt+4
Max. Height	subject to	subject	subject	subject		subject		subject	subject
	a max. of	to a	to a	to a max.		to a		to a	to a
	12m	max. of	max. of	of		max. of		max. of	max. of
		9m	12m	15.25m		9m		12m	15.25m
Max. FSI	1.5		1.5				1.5
Minimum	Where Street Alignment/new road is prescribed in these regulations, it shall
	be from  that street alignment/ new road line.
Setbacks
	In case of others, it shall be from the property boundary.
	Abutting Road width						Set back
Min. FSB	15.25m and below							3.5m
	Above 15.25m & up to 30.5m							4.5m
	Above 30.5m							6m
Min. SSB on	2.5m	1.5m	2.5m	4.0m *		1.5m		2.5m	4.0m *
either side
Min. RSB	2.5m	1.5m	2.5m	4.0m **		1.5m		2.5m	4.0m **

 

Note: * (i) In cases where the min. required SSB is more than 3.5m option can be had to leave the min. 3.5m on one side and the remainder of the total of both the min. required SSBs on the other side.

 

 

^♣ Approved in G.O. Ms No.103, H&UD Dept., dt. 29.04.2010 and published in TNGG on 26.05.2010

 

 

 

 

• (ii) Similarly when minimum required RSB is more than 3.5m option can also be had to leave the min required 3.5m on the rear and the remainder of the min. in the front.

 

• (iii) In cases of Residential or predominantly residential developments, –

 

• where dwelling units for Economically Weaker Sections do not exceed 30 sq.m in floor area each, 50% of normally permissible FSI is additionally allowable over and above the normally permissible FSI; and

 

• where dwelling units for Low Income Group do not exceed 50 sq.m in floor area each, 30% of normally permissible FSI is additionally allowable over and above the normally permissible FSI;

 

Provided that the developer or promoter or owner shall not sell these dwellings for other than the said purposes and no conversion or amalgamation shall be

 

permissible in these cases of lower income group dwellings. ^♣

 

Table C

 

Description		Other areas in Chennai City, and the rest of CMA
Max. no. of					–
dwelling units
Min. Road		9m					10m
width
Min. Plot Extent		1100 sq.m.				300 sq.m.	450 sq.m.
Min. Plot		15m				9m	12m	15m
Frontage
	G+1 or	G+2 or		G+3 or		G+1 or	G+2 or	G+3 or
Max. Height	Stilt+2	Stilt+3		Stilt+4		Stilt+2	Stilt+3	Stilt+4
	subject to	subject to		subject to a		subject to a	subject to a	subject to a
	a max. of	a max. of		max. of		max. of	max. of	max. of
	9m	12m		15.25m		9m	12m	15.25m
Max. FSI					1.5
Minimum	Where Street Alignment/new road is prescribed in these regulations, it shall be
	from  that street alignment/ new road line.
Setbacks
	In case of others, it shall be from the property boundary.
	Abutting Road width						Set back
Min. FSB	15.25m and below						3.5m
	Above 15.25m & up to 30.5m						4.5m
	Above 30.5m						6m
Min. SSB on	1.5m	3.5m		4.0m *		1.5m	3.5m	4.0m *
either side
Min. RSB	1.5m	3.5m		4.0m **		1.5m	3.5m	4.0m **

 

Note: * (i) In cases where the min. required SSB is more than 3.5m option can be had to leave the min. 3.5m on one side and the remainder of the total of both the min. required SSBs on the other side.

 

• (ii) Similarly when minimum required RSB is more than 3.5m option can also be had to leave the min required 3.5m on the rear and the remainder of the min. in the front.

 

• Approved in O. Ms No.103, H&UD Dept., dt. 29.04.2010 and published in TNGG on 26.05.2010

 

 

• (iii) In cases of Residential or predominantly residential developments, –

 

• where dwelling units for Economically Weaker Sections do not exceed 30 sq.m in floor area each, 50% of normally permissible FSI is additionally allowable over and above the normally permissible FSI; and

 

• where dwelling units for Low Income Group do not exceed 50 sq.m in floor area each, 30% of normally permissible FSI is additionally allowable over and above the normally permissible FSI;

 

Provided that the developer or promoter or owner shall not sell these dwellings for other than the said purposes and no conversion or amalgamation shall be

 

permissible in these cases of lower income group dwellings. ^♣

 

(4) Commercial or predominantly commercial special building

 

		Continuous
Sl.No.	Description	Building Area		Other areas in CMA
		anywhere
		within CMA
1	2	3			4
A	Minimum	80 sq.m.			200 sq.m
	Plot extent
B	Minimum Plot	4 m			8 m
	width/ frontage
C	Maximum	G+3 floors or stilt + 4 floors subject to a maximum of 15.25 m
	Height
D	Maximum FSI		1.5
		Where  Street  Alignment/new  road  is  prescribed  in  these
E	Minimum	regulations, it shall be from   that street alignment/ new road
	Setbacks	line.
		In the case of others, it shall be from the property boundary.
		Abutting Road width						Set back
(i)		15.25m and below						3.5m
	Front Set back
		Above 15.25m & up to 30.5m						4.5m
		Above 30.5m						6m
			Up to G+2 or stilt +3				G+3 or stilt +4 floors
(ii)	Side Set back	Nil		floors subject to			subject to max. of
				max. of 12m				15.25 m
				3.5m on either side			4m on either side
(iii)	Rear Set back	Nil			3.5m

 

Note: (i) For public buildings such as theatres, kalyana mandapams, assembly halls, exhibition halls, hospitals, nursing homes, hotels, lodging houses, etc. setback all around shall not be less than 6 metres.

 

• In CBA, there shall be atleast 1m wide internal passage from rear to front in Ground floor, directly accessible to road.
• In cases of hospital buildings an additional FSI of 0.25 is allowable over and above the normally permissible FSI.

 

 

^♣ Approved in G.O. Ms No.103, H&UD Dept., dt. 29.04.2010 and published in TNGG on 26.05.2010

 

 

 

• Structures permissible in the minimum prescribed Front setback, Side setback and Rear set back are given in the regulations No. 11.

 

• The minimum width of corridor shall be as given in the Annexure XVII.

 

(7)(a) Parking spaces shall be provided within the site conforming to the regulations given in the Annexure XVI.

 

• (b) In cases where upper floor/floors over a stilt parking floor is/are proposed for parking to satisfy the minimum number of parking required as per the Development Regulations, such upper parking floor/floors shall conform to the special

 

regulations prescribed in the Annexure XXV-A.^§

 

• Rainwater harvesting provisions as prescribed in the Annexure XIX shall be provided.

 

• Special regulations for physically disabled stated in the Annexure XXII shall be adhered to.

 

• Solar energy capture provisions as prescribed in the Annexure XXIII shall be provided where applicable.

 

• The reservation of land for community recreational purposes such as park or play ground required in these regulations shall be as given in the Annexure XX.

 

• If the building is constructed on stilts and the stilt floor is to be used for parking, the minimum clear height of the floor (between the lower floor and the bottom of the beam) shall not exceed 3m and it shall not be enclosed for use as garages; if it is enclosed it shall be counted for FSI and number of floors for the purpose of defining special building / MSB.

 

• Every special building development exceeding 900 sq.m in floor area shall be provided with electrical room in ground floor or open space at ground level within the premises to accommodate electrical transformer conforming to the Regulations detailed in Annexure XXIV.

 

• If a special building contains more than one use and the allowability of the built space with reference to the abutting road width and exclusive passage width shall be decided based on the number of dwellings for the residential use and equivalent floor area allowable for commercial and other uses.

 

• Vehicular ramp in set backspaces around a special building may be permitted subject to the condition that the clearance of the proposed ramp from the property boundary / street alignment shall be minimum 1.5 metres and a clear motorable driveway of min. 3.5 m. in width is available around the building.

 

• The structures incidental to the main activities such as water closet / pump room, transformer room, transformer yard, electric room shall not be construed as individual block for the purpose of these rules. However, these structures may be permitted in the prescribed set back space provided that they do not fall in the drive way and its height does not exceed 4 mts., provided further that transformer and electrical rooms floor area does not exceed 15 sq.m. and W.C and Pump room per block does not exceed 6 sq.m.

 

• In cases of special building residential developments exceeding 100 dwelling units in primary residential use zone, commercial and institutional uses not exceeding 10 per cent of the floor area of the building at lower habitable floor levels, may be allowed (not for any industrial use) as incidental uses required for the occupants of the remaining residential developments within the premises.

 

• In areas where sewage system provided by the Metro water / Local body concerned is not available and

 

 

• Approved in G.O. Ms. No.212, H&UD dept, dated 26.09.2012 and published in TNGG on 31.10.2012

 

 

 

• where number of dwelling units exceeds 50 nos. or 2500 sq.m. of commercial area (for this purpose 50 sq.m. is equated to one dwelling unit) sewage treatment plant shall be provided and maintained for the disposal of the sewage within the site itself with prior clearance from the Metro water/Pollution Control Board as the case may be on location and design;

 

• where number of dwelling units is less than 50 nos. or 2500 sq.m. of commercial area, septic tank with up-flow filters shall be provided and maintained for the disposal of the sewage within the site itself.

 

• Any construction with roof over it in the terrace floor for A.C. Plant/structures shall be counted, as a floor and categorization of type of building shall be done accordingly.

 

• In cases where the extent of the site where residential or predominantly residential developments proposed exceeds 10000 sq.m. (1 hectare), the developer shall reserve minimum ten per cent of the site area (excluding roads if any handed over to local body) and provide housing thereon for lower income groups with dwelling units not exceeding 45 sq.metres in floor area each, either within the site proposed for special building development or in a location within a radius of 2 k.m. from the site under reference. The developer or promoter or owner shall sell these small dwellings only for this purpose. No conversion or amalgamation shall be permissible in these cases of lower income group dwellings.

 

• In residential / predominantly residential developments with dwelling units exceeding 100 in number, the design should include waste management infrastructure and atleast a closed non polluting storage provision for solid waste storage within the premises preferably with direct access from the abutting road shall be provided so that the local body can collect this stored waste from it.

 

• The space set apart for formation of a new road as per Master Plan or Detailed Development Plan or road widening / street alignment shall be transferred to the Authority or the Agency or the Local Body designated by the Authority through a registered Gift Deed before actual issuance of planning permission. The exact mode of conveyance of the land shall be consistent with the relevant enactment and regulations. In such cases ‘Transfer of Development Rights’ (TDR) certificate may be obtained to the extent eligible as per regulations given in the Annexure XXI

 

• Basement Floor: –

 

• The height of basement floor shall not exceed 1.2 metres above ground level and the headroom shall be minimum 2.4 metres.

 

• No part of the basement shall be constructed in the minimum required set backspaces, required for the movement of fire fighting vehicles/equipments.

 

• In cases where second basement is proposed for parking and incidental uses, sufficient provision for lighting and ventilation and also for protection from fire to the satisfaction of Directorate of Fire and Rescue Services shall be made.

 

• During the construction of the basement floor, it shall be sole responsibility of the planning permission holder to ensure that the building / structure in the adjoining sites are not weakened / damaged.

 

• Security Deposit: –

 

The applicant shall deposit a sum at the rate of Rs. 50 per square metre of floor area as a refundable non-interest earning security and earnest deposit. The deposit shall be refunded on completion of development as per the approved plan as certified by Chennai Metropolitan Development Authority; if not, it would be forfeited.

 

• Display Board: –

 

• The details of the development for which planning permission issued, date of expiry of permit etc. shall be displayed in the format prescribed by the Authority on a board of size at least 60 cm x 120 cm.

 

 

 

• The applicant shall pay a sum of Rs. 10,000/- (Rupees ten thousand only) as earnest money non interest bearing refundable deposit and same should be utilized for the purpose of installing the prescribed size board on the site by CMDA, in the event of the applicant not fulfilling the conditions stated in (a) above.

 

• If the applicant fulfills the conditions (a) above, the deposit shall be refunded after production of the completion certificate.

 

27. Regulation for Group developments

 

• Group Development – means accommodation for residential or commercial or combination of such activities housed in two or more blocks of buildings in a particular site irrespective of whether these structures are interconnected or not. Any inter link between the structures in terms of connecting corridors shall not be construed as making any two structures into one block. However, if these blocks are connected solidly at least for one-third the width of any one block on the connecting side, then such blocks shall be construed as a single block.

 

• (a).The minimum width of the public road on which the site abuts or gains access shall be 10 m.

 

The minimum width stated above shall be the existing width of the road and not the street alignment prescribed.

 

Explanation: –

 

• Road width means the road space as defined in DR no. 2 (35). The qualifying road width for permitting Group development shall be available atleast for a stretch of 250m along the length of the road abutting the site and the stretch from a junction can be straight or a curve or zigzag or combination of the above.

 

To cite examples –

 

9. If the road over its general length is of 10 metres width, but because of some kinks in front of the site one end is 9.8 metres and the other end is 10.2 metres is acceptable.

 

1. If the general road is of width less than 10 metres width, but only widens opposite to or nearer to the site is more than 10 metres, is not acceptable.

 

1. If the road is generally of 10 metres width upto a considerable length on one side, but discontinues and narrows into a road of smaller width on the other side of the site in question and the plot owner is willing to leave enough space for continuity of 10 metres road in front of his site, this will have to be checked and decided on case-by-case.

 

1. If the general road width is less than 10 metres and the site owner merely agrees to leave enough space to have 10 metres in front of his site only, this is not acceptable.

 

• Road width measurements for the above purpose shall be of the road as designed and laid and the existence of unauthorized encroachments, for which no patta has been given, will not normally affect adversely provided the shortage in width in the min. stretch stated above does not exceed 10% of the min. prescribed width. However permissibility or otherwise (in exceptional cases) in such specific situations will be decided case-by-case.

 

(b)     If the site does not directly abut a public road but gains access through a private exclusive passage or through a part of the plot which can be treated as a passage from a public road of minimum width as prescribed above, the minimum width of such passage shall be as follows:

 

 

 

 

Sl.No.	Description	Minimum width
	When it is intended to serve six dwelling or up to 600 square
(1)	metres of commercial building and the length of the passage	3.6 metres)
	does not exceed 80 metres.
(2)	When it is intended to serve up to 8 dwellings or upto 2,400	4.8 metres
	square metres of commercial building and the length of the
	passage does not exceed 100 metres.
(3)	When it is intended to serve not more than 10 dwellings or	7.2 metres
	upto 3000 square metres of commercial building and the
	length of passage does not exceed 120 metres.
(4)	When it is intended to serve not more than 20 dwellings or  up	9.0 metres
	to 6000 square metres of commercial building and the length
	of passage does not exceed 240 metres.
(5)	When it is intended to serve more than 20 dwellings or more	10.0metres
	than 6000 square metres of commercial building.

 

• The extent of site, FSI, Set back etc. for Group Development shall be regulated according to the table below:

 

Continuous

Residential in Economically

Sl.

Weaker Section areas

Description

Building Area

Other areas in CMA

No.

anywhere

Chennai

in other

within CMA

City

areas

1

2

3

4

5a

5b

A

Minimum Plot

300 sq.m.

660sq.m

300 sq.m.

300sq.m.

extent

B

Minimum Plot

6m

12m

10m

10m

width/ frontage

C

Maximum

G+3 or stilt +4 floors subject to a max. of 15.25m.

Height

D

Maximum FSI

1.5

E

Minimum

Where Street Alignment/new road is prescribed in these regulations,

it shall be from

that street alignment/ new road line. In case of

Setbacks

others, it shall be from the property boundary.

(i)

Front Setback

4.5 m

G+2 or Stilt

G+3 or Stilt+4

+3 floors

floors subject

(ii)

Side Setback

1.5m on

subject to a

to a max. of

3 m on either side

max. of 12m

15.25m

one side

3.5m on

4.5m on

either side

either side

(iii)

Rear Setback

1.5 m

3.5m

4.5m

3 m

(iv)

Spacing between

6 m

6 m

3 m

blocks

 

Note:    (i) For public buildings such as theatres, kalyana mandapams, assembly halls, exhibition halls, hospitals, nursing homes, hotels, lodging houses, etc. setback all around shall not be less than 6 metres.

• (ii) In cases of Residential or predominantly residential developments, –

 

• where dwelling units for Economically Weaker Sections do not exceed 30 sq.m in floor area each, 50% of normally permissible FSI is additionally allowable over and above the normally permissible FSI; and

 

• where dwelling units for Low Income Group do not exceed 50 sq.m in floor area each, 30% of normally permissible FSI is additionally allowable over and above the normally permissible FSI;

 

Provided that the developer or promoter or owner shall not sell these dwellings for other than the said purposes and no conversion or amalgamation shall be permissible in these cases of lower income group dwellings. ♣

 

(iii) In cases of hospital buildings an additional FSI of 0.25 is allowable over and above the normally permissible FSI.

 

• Structures permissible in the minimum prescribed Front set back, Side setback and Rear set back are given in the regulation No. 11
• The minimum width of corridor shall be as given in the Annexure XVII.

 

• (a) Parking spaces shall be provided within the site conforming to the regulations given in the Annexure XVI.

 

^**(b) In cases where upper floor/floors over a stilt parking floor is/are proposed for parking to satisfy the minimum number of parking required as per the Development Regulations, such upper parking floor/floors shall conform to the special

 

regulations prescribed in the Annexure XXV-A.^**

 

• Rainwater harvesting provisions as prescribed in the Annexure XIX shall be provided.

 

• Special regulations for physically disabled stated in the Annexure XXII shall be adhered to.
• Solar energy capture provisions as prescribed in the Annexure XXIII shall be provided where applicable.

 

• The reservation of land for community recreational purposes such as park or play ground required in these regulations shall be as given in the Annexure XX.
• Internal vehicular access way including passage if any within the site shall a clear width of 7.2 m and such vehicular access shall be available for every building block in the site within a distance of 50 metres. Further, it shall be a clear open to sky and no projection of structure over it is permissible.

 

• If the building is constructed on stilts and the stilt floor is to be used for parking, the minimum clear height of the floor (between the lower floor and the bottom of the beam) shall not exceed 3mts and it shall not be enclosed for use as garages; if it is enclosed it shall be counted for FSI and number of floors for the purpose of defining Group Development / MSB.

 

• If a Group Development contains more than one use and the allowability of the built space with reference to the abutting road width and exclusive passage width shall be decided based on the number of dwellings for the residential use and the equivalent floor area allowable for commercial and other uses.

 

• Every Group Development exceeding 900 sq.m in floor area shall be provided with electrical room in ground floor or open space at ground level within the premises to accommodate electrical transformer conforming to the Regulations detailed in Annexure XXIV.

 

• Vehicular ramp in set back spaces around building blocks may be permitted subject

 

to  the  condition  that  the  clearance  of  the  proposed  ramp  from  the  property

^♣ Approved in G.O. Ms No.103, H&UD Dept., dt. 29.04.2010 and published in TNGG on 26.05.2010 ^** Approved in G.O. Ms. No.212, H&UD dept, dt. 26.09.2012 and published in TNGG on 31.10.2012

 

boundary / street alignment shall be minimum 1.5 metres and a clear motorable driveway of min. 3.5 m. in width is available around the building block.

 

• The structures incidental to the main activities such as water closet / pump room, transformer room, transformer yard, electric room shall not be construed as individual block for the purpose of these rules. However, these structures may be permitted in the prescribed set back space provided that they do not fall in the drive way and its height does not exceed 4 mts., provided further that transformer and electrical rooms floor area does not exceed 15 sq.m. and W.C and Pump room per block does not exceed 6 sq.m.

 

• In cases of residential developments exceeding 100 dwelling units in primary residential use zone, commercial and institutional uses not exceeding 10 per cent of the floor area of the building at lower habitable floor levels, may be allowed (not for any industrial use) as incidental uses required for the occupants of the remaining residential developments within the premises.

 

• In areas where sewage system provided by the Metro water / Local body concerned is not available and

 

• where number of dwelling units exceeds 50 nos. or 2500 sq.m. of commercial area (for this purpose 50 sq.m. is equated to one dwelling unit) sewage treatment plant shall be provided and maintained for the disposal of the sewage within the site itself with prior clearance from the Metro water / Pollution Control Board as the case may be on location and design;

 

• where number of dwelling units is less than 50 nos. or 2500 sq.m. of commercial area, septic tank with up-flow filters shall be provided and maintained for the disposal of the sewage within the site itself.

 

• Any construction with roof over it in the terrace floor for A.C. Plant/ structures shall be counted, as a floor and categorization of type of building shall be done accordingly.

 

• In cases where the extent of the site where residential or predominantly residential developments proposed exceeds 10000 sq.m. (1 hectare), the developer shall reserve minimum ten per cent of the site area (excluding roads if any handed over to local body) and provide housing thereon for lower income groups with dwelling units not exceeding 45 sq.metres in floor area each, either within the site proposed for group development or in a location within a radius of 2 k.m. from the site under reference. The developer or promoter or owner shall sell these small dwellings only for this purpose. No conversion or amalgamation shall be permissible in these cases of lower income group dwellings.

 

• In residential / predominantly residential developments with dwelling units exceeding 100 in number, the design should include waste management infrastructure and atleast a closed non polluting storage provision for solid waste storage within the premises preferably with direct access from the abutting road shall be provided so that the local body can collect this stored waste from it.

 

• In the interest of the public for better circulation in the area and also to ensure that the proposed development does not block access to the properties around, in cases of large developments where link roads have to be provided for connectivity to the adjoining lands/areas, through the site applied for development, the Authority reserves the right to insist the applicant to set apart such road spaces within the site and the applicant shall hand over the same free of cost through a registered gift deed to the authority or Local body designated by it for declaring it as public road. In such cases set back from these roads to the buildings proposed shall be provided as prescribed in these regulations.

 

• The space set apart for formation of a new road proposal in Master Plan /Detailed Development Plan or road widening / street alignment shall be transferred to the Authority or the Agency or the Local Body designated by the Authority through a registered Gift Deed before actual issuance of planning permission. The exact mode of conveyance of the land shall be consistent with the relevant enactment and

 

 

 

 

regulations In such cases ‘Transfer of Development Rights’ (TDR) certificate may be obtained to the extent eligible as per regulations given in the Annexure XXI

 

• Basement Floor: –

 

• The height of basement floor shall not exceed 1.2 metres above ground level and the headroom shall be minimum 2.4 metres.

 

• No part of the basement shall be constructed in the minimum required set backspaces, required for the movement of fire fighting vehicles/equipments.

 

• In cases where second basement is proposed for parking and incidental uses, sufficient provision for lighting and ventilation and also for protection from fire to the satisfaction of Directorate of Fire and Rescue Services shall be made.

 

• During the construction of the basement floor, it shall be sole responsibility of the planning permission holder to ensure that the building / structure in the adjoining sites are not weakened / damaged

 

• Security Deposit:

 

The applicant shall deposit a sum at the rate of Rs. 50 per square metre of floor area as a refundable non-interest earning security and earnest deposit. The deposit shall be refunded on completion of development as per the approved plan as certified by Chennai Metropolitan Development Authority; if not, it would be forfeited.

 

• Display Board

 

• The details of the development for which planning permission issued, date of expiry of permit etc. shall be displayed in the format prescribed by the Authority on a board of size at least 60 cm x 120 cm.

 

• The applicant shall pay a sum of Rs. 10,000/- (Rupees ten thousand only) as earnest money non interest bearing refundable deposit and same should be utilized for the purpose of installing the prescribed size board on the site by CMDA, in the event of the applicant not fulfilling the conditions stated in (a) above.

 

• If the applicant fulfills the conditions (a) above, the deposit shall be refunded after production of the completion certificate.

 

• Group development exceeding 50 dwelling units or where the extent of the site on

 

which it is proposed exceeds 1 hectare it shall be designed and the plans signed by a qualified Architect

 

• Notwithstanding anything stated above, Group developments for EWS housing, and special projects undertaken by CMDA may be approved subject to the conditions as may be stipulated by the Authority.

 

 

 

28. Special rules for multi-storeyed Buildings

 

• (a) Site Extent:- The minimum extent of site for construction of multi-storeyed buildings shall not be less than 1500 square metres.

 

• Road width:- The site shall either abut on a road not less than 18 metres in width or gain access from public road not less that 18 metres in width through a part of the site which can be treated as an exclusive passage of not less than 18 metres in width.

 

Provided further that multi-storeyed building may be permitted with limitations on maximum FSI and maximum height of the building on a site abutting or gaining access from a public road of min. 12 m/15 m in width, or gain access from public road not less that 12 m/15 metres in width through a part of the site which can be treated as an exclusive passage of not less than 12 m/15 metres in width, subject to compliance of the planning parameters stated in the Table under sub rule (2) below.

 

 

 

 

Explanation:

 

• Road width means the road space as defined in DR no. 2 (35). The qualifying road width for permitting multi-storeyed building shall be available atleast for a stretch of 500m along the length of the road abutting the site and the stretch from a junction can be straight or a curve or zigzag or combination of the above.

 

To cite examples –

 

17. If the road over its general length is of 18 metres width, but because of some kinks in front of the site one end is 17.8 metres and the other end is 18.2 metres is acceptable.

 

1. If the general road is of width less than 18 metres width, but only widens opposite to or nearer to the site is more than 18 metres, is not acceptable.

 

1. If the road is generally of 18 metres width up to a considerable length on one side, but discontinues and narrows into a road of smaller width on the other side of the site in question and the plot owner is willing to leave enough space for continuity of 18 metres road in front of his site, this will have to be checked and decided on case-by-case.

 

1. If the general road width is less than 18 metres and the site owner merely agrees to leave enough space to have 18 metres in front of his site only, this is not acceptable.

 

• Road width measurements for the above purpose shall be of the road as designed and laid and the existence of unauthorized encroachments, for which no patta has been given, will not normally affect adversely provided the shortage in width in the min. stretch stated above does not exceed 10% of the min. prescribed width. However permissibility (in exceptional cases) or otherwise in such specific situations will be decided case-by-case.

 

• The extent of the site, FSI, Set back etc. for Multi- storeyed Building shall be regulated according to the table below:

 

 

Sl.No	Description	Category  I(a)	Category I(b)	Category II				Category III
A	Minimum Plot	1200 sq.m	1200 sq.m	1500 sq.m				2500 sq.m
	extent
B	Minimum Plot	25m	25m		25m				40m
	width/frontage
C	Minimum	12m	15m			18m
	Road width
D	Maximum FSI	1.5	1.75	2.50		2.25			2.00
E♣	Maximum
	Coverage
	(a) Normally	30%	30%	30%		Above 30% up			Above 40%
	allowable					to 40%			up to 50%
	(b) allowable for
	Economically
	Weaker	40%	40%	40%		Above 40% up			Above 50%
	Sections/ Low
						to 50%			up to 60%♣
	Income Group
	housing
	developments

^♣ Approved in G.O. Ms No.103, H&UD Dept., dt. 29.04.2010 and published in TNGG on 26.05.2010

 

 

 

			G+6 or Stilt	G+8 Stilt +9	60 metres where the width of the abutting
F		Maximum	+ 7 floors	floors	road is minimum 18 metres, and exceeding
		height above	subject to a	subject to a	60 metres where the width of abutting road
		G.L	max. 24m	max. 30m	is minimum 30.5 metres, subject to such
					conditions as may be necessary.
			Height of the building		Minimum required setback space from
			above ground level		the property boundary
G		Minimum set	Above 15.25m upto 30m		7 m
		back all
					For every increase in height of 6m or part
		around
					thereof above 30.5m, minimum extent of
			Above 30m
					setback space to be left additionally shall be
					one metre.
			Height of the building		Minimum required spacing between
		Spacing	above ground level		blocks
		between
H			Above 15.25m upto 30m		7 m
		blocks in case
		of group			For every increase in height of 6m or part
		developments	Above 30m		thereof above 30.5m, space to be left
					additionally shall be one metre.
	Explanation: –

 

• For the purpose of these rules, group development is one which has two or more blocks of buildings in a particular site irrespective of whether these structures are inter connected or not. Any inter link between the structures in terms of connecting corridors shall not be construed as making any two structures into one block. However if these blocks are connected solidly atleast for 1/3^rd the width of any one block on the connecting side then such blocks shall be construed as a single block.

 

Note (i) The space specified above shall be kept open to sky and free from any erection/projection (such as sunshade/balcony) of any building other than a fence or compound wall provided that these open yards may be used for the provision of access ways to the building’s parking facilities.

 

• A watchman or caretaker booth or Kiosk not exceeding 2.5m.x2.5m. in size at each gate and not exceeding 3 m. in height, or power /transformer room not exceeding 4 m. in height shall be permitted in the set back space at ground level after leaving 7 metres clear set back from the main structure. Provided that the height restriction shall not apply for an open transformer.

 

• Gate pillars without or with arches with a min. headroom clearance of 5.50m atleast to a width of 3.5m. may be permitted in the set back space after leaving 7 metres clear set back from the main structure.

 

• In the cases where street alignment has been prescribed, the front open space shall be left from the street alignment.

 

• In cases of hospital buildings an additional FSI of 0.25 is allowable over and above the normally permissible FSI.

 

• (vi) In cases of Residential or predominantly residential developments, –

 

• where dwelling units for Economically Weaker Sections do not exceed 30 sq.m in floor area each, 50% of normally permissible FSI is additionally allowable over and above the normally permissible FSI; and

 

 

 

• Approved in O. Ms No.103, H&UD Dept., dt. 29.04.2010 and published in TNGG on 26.05.2010

 

 

• where dwelling units for Low Income Group do not exceed 50 sq.m in floor area each, 30% of normally permissible FSI is additionally allowable over and above the normally permissible FSI;

 

Provided that the developer or promoter or owner shall not sell these dwellings for other than the said purposes and no conversion or amalgamation shall be permissible in these cases of lower income group dwellings.

 

(vii) In cases of Low Income Group and Economically Weaker Sections housing developments, where the height of the building above the ground level is above 15.25m and upto 30m the minimum required setback space from the property

 

boundary shall be 6m. ^♣

 

• Development charges shall be double for the part of the building, which falls in the height exceeding 1.5 times the width of the road.

 

• Parking and Parking facilities:

 

• For the use of the occupants and of persons visiting the premises for the purposes of profession, trade, business, recreation or any other activity parking spaces and parking facilities shall be provided within the site to the satisfaction of the Authority and conforming to the standards specified in Annexure XVI.

 

• (b) In cases where upper floor/floors over a stilt parking floor is/are proposed for parking to satisfy the minimum number of parking required as per the Development Regulations, such upper parking floor/floors shall conform to the special

 

regulations prescribed in the Annexure XXV-A. ^††

 

• Vehicular access within the site:

 

Internal Vehicular Access way including passage if any within the site shall have a clear width of 7.2 m. and such vehicular access shall be available for every building block in the site. Further, it shall be a clear width of open to sky and no projection in structure over it is permissible.

 

• Corridor width: –

 

The corridor serving as access for units in the development in whichever floor they may be situated shall not be less than the standards prescribed in Annexure XVII.

 

• Basement Floor: –

 

• The height of basement floor shall not exceed 1.2 metres above ground level and the headroom shall be minimum 2.4 metres.
• No part of the basement shall be constructed in the minimum required set backspaces required for the movement of snorkel.

 

• In cases where second basement is proposed for parking and incidental uses, sufficient provision for lighting and ventilation and also for protection from fire to the satisfaction of Directorate of Fire and Rescue Services shall be made.

 

• During the construction of the basement floor, it shall be sole responsibility of the planning permission holder to ensure that the building / structure in the adjoining sites are not weakened / damaged.

 

• The reservation of land for community recreational purposes such as park or play ground required in these regulations shall be as given in the Annexure XX.

 

• Conformance to National Building Code of India: –

 

• In so far as the determination of sufficiency of all aspects of structural designs, building services, plumbing, fire protections, construction practice and safety are concerned the specifications, standards and code of practices recommended in the National Building Code of India shall be fully confirmed to and any breach

 

 

• Approved in G.O. Ms. No.212, H&UD dept, dt. 26.09.2012 and published in TNGG on 31.10.2012

 

 

thereof shall be deemed to be a breach of the requirements under these regulations.

 

• Every multi-storeyed development erected shall be provided with

 

1. lifts as prescribed in National Building Code

 

1. a stand-by electric generator of adequate capacity for running lift and water pump, and a room to accommodate the generator;

 

• an electrical room of not less than 6 metres by 4.0 metres in area with a minimum head room of 2.75 metres to accommodate electric transformer in the ground floor; and the space for installation of transformers shall conform to the Regulation given in Annexure XXIV; and

 

2. at least one metre room of size 2.4 metres by 2.4 metres for every 10 consumers or 3 floor whichever is less. The metre room shall be provided in the ground floor.

 

• Fire safety, detection and extinguishing systems:

 

• All building in their design and construction shall be such as to contribute to and ensure individually and collectively and the safety of life from fire, smoke, fumes and also panic arising from these or similar other causes.

 

• In building of such size, arrangement or occupancy that a fire may not itself provide adequate warning to occupants, automatic fire detecting and alarming facilities shall be provided where necessary to warn occupants or the existence of fires, so that they may escape, or to facilitate the orderly conduct of fire exit drills.

 

• Fire protecting and extinguishing system shall conform to accepted standards and shall be installed in accordance with good practice as recommended in the National Building Code of India, (amended from time to time) and to the satisfaction of the Director of Fire and Rescue Services by obtaining a no objection certificate from him.

 

• In cases of residential developments exceeding 100 dwelling units in primary residential use zone, commercial and institutional uses not exceeding 10 per cent of the floor area of the building at lower habitable floor levels, may be allowed (not for any industrial use) as incidental uses required for the occupants of the remaining residential developments within the premises

 

• The design and plans of the building shall be made and signed by a qualified Civil or Structural Engineer and an Architect who should possess the qualification referred to in the Architect Act, 1972 (Central Act 20, 1972), so as to become a member of the profession of Architects under the provisions of the said Act. The qualified Engineer or Structural Engineer should also be Class I licensed Surveyor registered with Corporation of Chennai /Local body concerned.

 

• Improvement charges: – The cost of laying / improvements to the systems in respect of road / water supply, sewerage / drainage / electric power supply that may be required as assessed by the competent authority, viz., corporation of Chennai / Chennai Metropolitan Water Supply and Sewerage Board / Tamil nadu Electricity Board shall be borne by the applicant.

 

• Security deposits: – The applicant shall deposit a sum at the rate of Rs. 100 per square metres of floor area as a refundable non-interest earning security and earnest deposit. The deposit shall be refunded on completion of development as per the approved plan as certified by Chennai Metropolitan Development Authority; if not, it would be forfeited.

 

 

 

 

 

• Display Board: –

 

• The details of the development for which planning permission issued, date of expiry of permit etc. shall be displayed in the format prescribed by the Authority on a board of size at least 60 cm x 120 cm.

 

• The applicant shall pay a sum of Rs. 10,000/- (Rupees ten thousand only) as earnest money non interest bearing refundable deposit and same should be utilized for the purpose of installing the prescribed size board on the site by CMDA, in the event of the applicant not fulfilling the conditions stated in (a) above.

 

If the applicant fulfills the conditions (a) above, the deposit shall be refunded after production of the completion certificate.

 

• In areas where sewage system provided by the Metro water / Local body concerned is not available and

 

• where number of dwelling units exceeds 50 nos. or 2500 sq.m. of commercial area (for this purpose 50 sq.m. is equated to one dwelling unit) sewage treatment plant shall be provided and maintained for the disposal of the sewage within the site itself with prior clearance from the Pollution Control Board on location and design;

 

• where number of dwelling units is less than 50 nos. or 2500 sq.m. of commercial area, septic tank with up-flow filters shall be provided and maintained for the disposal of the sewage within the site itself .

 

• In cases where the extent of the site where residential or predominantly residential developments proposed exceeds 10000 sq.m. ( 1 hectare),the developer shall reserve minimum ten per cent of the site area (excluding roads if any handed over to local body) and provide housing thereon for lower income groups with dwelling units not exceeding 45 sq.metres in floor area each, either within the site proposed for MSB development or in a location within a radius of 2 k.m. from the site under reference. The developer or promoter or owner shall sell these small dwellings only for this purpose. No conversion or amalgamation shall be permissible in these cases of lower income group dwellings.

 

• In residential / predominantly residential developments with dwelling units exceeding 100 in number, the design should include waste management infrastructure and atleast a closed non polluting storage provision for solid waste storage within the premises preferably with direct access from the abutting road shall be provided so that the local body can collect this stored waste from it.

 

• In the interest of the public for better circulation in the area and also to ensure that the proposed development does not block access to the properties around, in cases of large developments where link roads have to be provided for connectivity to the adjoining lands areas, through the site applied for development, the Authority reserves the right to insist the applicant to set apart such road spaces within the site and the applicant shall hand over the same free of cost through a registered gift deed to the authority or Local body designated by it for declaring it as public road. In such cases set back from these roads to the buildings proposed shall be provided as prescribed in these regulations.

 

• The space set apart for formation of a new road as per Master Plan or Detailed Development Plan or road widening / street alignment shall be transferred to the Authority or the Agency or the Local Body designated by the Authority through a registered Gift Deed before actual issuance of planning permission. The exact mode of conveyance of the land shall be consistent with the relevant enactment and regulations In such cases ‘Transfer of Development Rights’ (TDR) certificate may be obtained to the extent eligible as per regulations given in the Annexure XXI.

 

 

 

 

 

 

• Rain water harvesting provisions as prescribed in the regulations given in Annexure XIX shall be provided.

 

• Solar energy capture provisions as prescribed in the regulations given in Annexure XXIII shall be provided where applicable.

 

• Civil Aviation height and activity restrictions stated in the regulation no. 24(4)(c) shall be adhered to. In cases where helipads are proposed at terrace of commercial / industrial multistoreyed buildings, clearance of civil aviation department shall be produced.

 

• Special regulations for physically disabled stated in the regulations given in Annexure XXII shall be adhered to.

 

• Areas set apart for multi-storeyed building developments are given in the Annexure IX.

 

• Scrutiny of the plan – The plan shall be scrutinized and forwarded to Government, with recommendation of a panel comprising of the following members for approval.

 

• Member-Secretary, Chennai Metropolitan Development Authority – Chairman

 

• Director of Fire and Rescue Service – Member

 

• Engineering Director, Chennai Metropolitan Water Supply and Sewerage Board – Member

 

• Chief Engineer, Corporation of Chennai – Member

 

• Chief Engineer, Tamil nadu Electricity Board, Chennai – Member

 

• Chief Planner, Chennai Metropolitan Development Authority – Member

 

• Joint Commissioner of Police (Traffic, Chennai) – Member

 

• Concerned engineer from the local body (other than Corporation of Chennai) – special invitee

 

• Senior Planner, Chennai Metropolitan Development Authority – Member Convener

 

Any suggestions of alterations recommended by the panel and approved by the Government shall be incorporated in the plans.

 

 

 

29. Layout and sub-division regulations:

 

This regulation seeks to ensure access to plots by way of roads and private passages, creating hierarchy of roads depending on the road length and intensity of developments in the area and also to provide adequate linkages to the existing roads and proposed roads in the Master Plan and Detailed Development Plan and further to provide proper circulation pattern in the area, providing required recreational spaces such as parks / playgrounds, and providing spaces for common amenities such as schools, post and telegraph offices, fire stations, police stations etc.

 

• The minimum extent of plots and frontage shall be as prescribed for various uses and types of developments given in the DR Nos. 25,26,27 and 28.

 

• (a) The minimum width of the public streets/road on which the site abuts or gains access shall be 7.2m. for residential layout developments and 9m. for industrial layout developments. For subdivisions the minimum width of the passage / public streets/road on which the site abuts or gains access shall be as required for different uses and types of developments.

 

• The minimum width stated above shall be the existing width of the road and not the street alignment prescribed.

 

• The width of the streets/roads and passages in the layouts /subdivisions / amalgamations shall conform to the minimum requirements given below:

 

 

 

(a) for

Residential developments

Description

Minimum

Remarks

width

(1)

(2)

(3)

A.

Passage

(i)

In areas of Economically Weaker

Section

and

for

continuous

building area:

a) For single plot

1.0 metre

The

passage   will   remain

b) For two to four plots

1.5 metre

private

(ii)

When it is

intended

to

serve

upto

The passage will remain

two plots and length of the passage

3.0 metres

private

does not exceed 40 metres)

(iii) When it is intended to serve up to

four  plots  and  length  of  the

3.6 metres

-Do-

passage does not exceed 80 metres)

(iv) When it is intended to serve up to

ten plots and length of the passage

4.8 metres

-Do-

does not exceed 100 metres)

B.

Streets and Roads

(i)

Streets intended to serve not more

than 16 plots and / or subject to a

7.2 metres

All streets shall become public

maximum length of 120 metres

(ii)

Streets intended to serve not more

than 20 plots and / or subject to a

9.0 metres

All streets shall become public

maximum length of 240 metres

(iii)

Roads

of

length

more

than

240

12.0 metres

All streets shall become public

metres but below 400 metres

(iv)

Roads

of

length

between

400

18.0 metres

All streets shall become public

metres to 1,000 metres

(v)

Roads

of

length

more

than

1000

24.0 metres

All streets shall become public

metres

 

Note:    Not withstanding anything contained above Authority reserves the right to revise layouts proposed by the applicant and applied for sanction in order to provide for better adequate linkages proper circulation pattern requirements considering local conditions etc.

 

 

 

• Cul-de-sacs: –

 

Can be provided when their length do not exceed 60 metres. They shall be provided with a turn around area of 9 metres x 9 metres at the closed end.

 

• Splay: –

 

A splay at the intersection of two or more streets / roads shall be provided subject to the minimum dimensions given below:

 

Sl.No	When the narrower road is of width	Min. splay
1	Upto 7.2m.	1.5m x 1.5m.
2	More than 7.2m. Upto 12m	3m. x 3m.
3	More than 12m. Upto 30.5m	4.5m x 4.5m
4	More than 30.5m.	6m. x 6m.

 

• Reservation of land for recreational purposes in a layout or sub-division for residential, commercial, industrial or combination of such uses shall be as follows.

 

Extent of layout		Reservation
(1)		(2)
For the first 3000		Nil
square metres
Between 3000	10 per cent of the area excluding roads or in the alternative he shall
	pay the market value of equivalent land and excluding the first
square metres
	3000  square	metres  as  per  the  valuation  of  the  registration
and 10,000
	department.  “No such area reserved shall measures less than 100
square metres
	square metres with a minimum dimension of 10 metres.”
Above 10,000	10 per cent of the area excluding roads. It is obligatory to make the
	reservation and no equivalent land cost in lieu of the same is
square metres
	acceptable.

 

• The land for community recreational purposes shall be restricted to ground level, in a shape and location to be specified by the Chennai Metropolitan Development Authority. The land so reserved shall be free from any construction by the layout owner, developer or promoter

 

• The building and use of land shall conform to the conditions that may be imposed while sanctioning the layout. The space set apart for commercial, institutional, industrial or other uses shall be deemed to be zoned for commercial, institutional, industrial or corresponding uses under the Master Plan.

 

• (a) The space set apart for roads (except those which may remain private) and the 10% area reserved for recreational purposes shall be transferred to the Authority or Agency or the Local Body designated by the Authority free of cost through a registered gift deed before the actual approval of the layout under the provisions of the T & CP Act. The exact mode of conveyance should be consistent with the relevant enactment and regulations.

 

• In cases of industrial estates developed by Government agencies the Authority reserves the right to allow them to retain the spaces set apart for roads and the recreational spaces as parks/play grounds and maintain them for the purposes to the satisfaction of the Authority.

 

• The Authority reserves the right to reserve space for recessed bus stops as part of the road space in the layouts exceeding 2 hectares, where found necessary on

 

 

 

public interest and this part of the road space also be transferred free of cost as stated in the sub rule 7(a) above.

 

• Ten per cent of layout area (excluding roads), additionally, shall be reserved for “Public Purpose” in those layouts, which are more than 10000 sq.m. in extent. Interested departments shall be given intimation of layout approval by the CMDA and requested to purchase the land from the owner of developer of promoter, on paying the cost of plots so reserved. The owner or developer or promoter has every right to sell the lands for residential purpose if no demand from any public departments is received within one year.

 

• In cases where the extent of the residential layout exceeds 10000 sq.m. ( 1 hectare) ten per cent of layout area (excluding roads) shall be developed as EWS plots and the owner or developer or promoter shall sell these plot only for this purpose. No conversion or amalgamation shall be permissible in these cases of EWS plots.

 

• When the area of land proposed for subdivisions is 20 hectares or more the Authority may reserve not more than 12 percent of the total area for industrial and commercial purposes and the area so reserved shall be deemed to be zoned for that purpose under the Master Plan.

 

• The cost of laying improvements to the systems in respect of road, water supply, sewerage, drainage or electric power supply that may be required as assessed by the competent authority, namely, the Corporation of Chennai, Chennai Metropolitan Water Supply and Sewerage Board, Tamilnadu Electricity Board, shall be borne by the applicant.

 

• Not withstanding any thing stated above layouts for EWS housing, site and services schemes, and Slum improvement may be approved subject to certain conditions as may be stipulated by the Authority.

 

30. Architectural Control

 

The Architectural façade or elevation of any building or the architectural features of any premises shall be in conformity with such conditions as the Authority may impose at the time of grant of permission.

 

31. Conservation of buildings of historical or architectural interest: –

 

In the opinion of the Authority, if a building or premises not covered under the Archeological Monuments Act is of historical or architectural interest and needs to be conserved, such heritage buildings/premises shall be listed and notified and any development at such heritage building premises shall conform to the regulations given in Annexure XXV.

 

32. Tree preservation

 

• The Authority may, in the interest of amenity make a Tree Preservation Order for any tree or group of trees or belt of forestland.

 

• The tree preservation order may prohibit the felling, topping, lopping or willful destruction of the trees concerned, except when those operations are carried-out with the permission of the Authority and under such conditions, as the Authority may deem fit. In granting planning permission for any development, the Authority may wherever it is appropriate, make adequate provision for the preservation or planting of trees, as may be specified.

 

33. These Regulations to prevail

 

• In the application of these regulations if there is conflict between the requirements under these regulations and the requirements under any other Act or rules these regulations and the provisions of Madras City Municipal Corporation Act, or Tamil Nadu District Municipalities or Tamil Nadu Panchayat Act of any other law relating to the local authority for the time being in force or any rule, bye-law or regulation

 

 

 

made under the said Act or laws such provisions which are contrary to these regulations shall stand suspended.

 

• The notifications made under the Municipal and Panchayat Acts and the Tamil Nadu Public Health Act, 1939 (Tamil Nadu Act-III of 1939) as regards setting of the Industrial and Residential area in the Chennai Metropolitan area will cease to operate from 5.8.1975 i.e. the date of coming into force of the First Master Plan for CMA.

 

34. Identification of boundaries

 

• In conformity with the intent and spirit of these rules where uncertainty exists as to the boundaries in the land use maps, the following regulations shall apply.

 

• Boundaries indicated, as approximately following the centre line of the streets, Highway lands, shall be construed to follow such centre lines.
• Boundaries indicated, as approximately following established boundaries of Survey Field Nos. shall be constructed as following such Survey Field Boundaries.

 

• Boundaries indicated, as approximately following the city limits shall be construed as following city limits.
• Boundaries indicated as following the shoreline be construed to follow such shoreline and in the event of change in the shoreline shall be construed as moving with the actual shoreline. Boundaries, indicated, as approximately following the centre lines of streams, rivers, canals, lakes or other bodies of water shall be construed to follow such centre line.

• Boundaries indicated as parallel to or extension of feature indicated in (I) to (iv) above shall be so construed. The scale of map shall determine distances not specifically indicated on the map.

 

35. Discretionary Powers

 

(1)     In specific cases where a clearly demonstrable hardship is caused the Authority or Government may relax any of the parameters prescribed by these regulations but not the land use.

 

(2)     In the case of organized market and shopping centers, the Authority or Government may, at its discretion, permit use of machinery not exceeding 15 horse power in respect of each shop, if it is considers that such permission shall not be injurious to health or amenity for the area.

(3)     The normally permissible FSI for Information Technology industries, Information Technology enabling services and Bio-informatics units certified by the appropriate authority in Designated Information Technology Parks, except in Primary Residential use zone within the Chennai City Corporation area, may be relaxed by the Authority or Government upto the extent of 100 percent.

 

36. Premium FSI

 

^# The Authority may allow premium FSI over and above the normally allowable FSI subject to a maximum of 1 (one) relating the same to the road width parameters as follows:-

 

S.No.	Road Width	Premium FSI (% of
		normally allowable FSI)
(i)	18 metres and above	40%
(ii)	12 metres – below 18 metres	30%
(iii)	9 metres – below 12 metres	20%

 

The Premium FSI shall be allowed in specific areas as may be notified, subject to Guidelines and on collection of charge at the rates as may be prescribed by the Authority with the approval of the Government. The amount collected towards the award of Premium FSI shall be remitted into Government account to be allotted separately for this purpose for utilising it for infrastructure development in that area as may be decided by the Government. ^#

 

37. Delegation of Powers

 

Any of the powers, duties or functions conferred or imposed or vested in the Authority / Government by any of foregoing regulations may be delegated to any Officer under its control or to any Officer of Government or to a local authority.

 

38. Penalties

 

Every person who shall commit any breach or any of the foregoing regulations shall be punishable with fine which may extend, to Rs.1000/- and in the case of a continuing breach, with fine which may extend to Rs.50/- for every day during which such breach continues after conviction for the first such breach.

 

39. Transitary provisions: ^∗

 

All applications for development including multistoried building, pending prior to 2nd September 2008 shall be disposed of in accordance with the Development Control Rules for the Chennai Metropolitan Area under the first master plan for the Chennai Metropolitan Area.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

^# Approved in G.O. Ms No.163, H&UD, dt. 09.09.2009 and published in TNGG on 23.09.2009 ^∗ Amended in G.O. Ms No.245, H&UD, dt. 28.11.2008 and published in TNGG on 10.12.2008

 

 

Spaces excluded from FSI and Coverage Computation

 

1 The following shall not be counted towards FSI  and plot coverage computation:

 

• Areas covered by stair-case rooms and lift rooms and passages thereto above the top most storey, architectural features, chimneys, elevated tanks (provided its height below the tank from the floor does not exceed 1.5 metre.) and WC (area not exceeding 10 sq.m)

 

• Staircase and lift rooms and passage thereto in the stilt parking floor

 

• Lift wells in all the floors

 

• Area of fire escape staircases and cantilever fire escape passages.

 

• Area of the basement floor / floors used for parking

 

• Area of the stilt parking floor provided its clear height (between lower floor and the bottom of the roof beam) does not exceed 3.0m and it is open on sides, and used for parking

 

• Area of structures exclusively for, accommodating machineries for water treatment plant and effluent treatment plant proposed with clearance from Tamil Nadu Pollution control Board,

 

• Areas covered by service ducts, and garbage shaft.

 

• Area of Balcony / Service verandah to an extent of 5 percent of each dwelling unit area in case of residential buildings and 5 percent of room area in the case of hotels and lodges.

 

• Porches /Canopies / porticos

 

• Service floor with height not exceeding 1.5 metres

 

• The following services and incidental structures necessary to the principal use subject to a maximum of 10 percent of the total floor area.

 

• Area of one office room not exceeding 15 sq.m for co-operative housing

 

society  or apartment/ building owners association in each block

 

• Servant’s/drivers bath room and water closet (not exceeding 20 sq.m.) for each block in cases of special building, Group development, and Multi-storeyed Building at ground floor /stilt parking floor

 

• Gymnasium of 150sq.m in floor area

 

• Area covered by

 

• Metre room in Ground floor or stilt parking floor

 

• Air-conditioning plant room in basement or ground floor

 

• Electrical room (conforming to Annexure XXIV) in Ground floor or Stilt parking floor

 

• Watchmen or caretaker booth/room in Ground floor / Stilt parking floor

 

• Pump room in Ground floor or stilt parking floor.

 

• Generator room in basement floor or ground floor or stilt floor.

 

• Lumber room in basement floor or ground floor.

 

• AHU in all the floors.

 

• Electrical /switch gear rooms in all the floors.

 

• Area of one room in ground floor of residential and commercial Multi-storeyed building, Special buildings, Group developments for separate letterboxes.

 

 

 

Reservation of land for community recreational purposes in cases of special buildings/ Group Developments/ multistoreyed building developments

 

• The reservation of land for community recreational purposes such as park / play ground shall be as given below at ground level in a shape and location abutting a public road to be specified by Chennai Metropolitan Development Authority:

	Extent of site				Reservation
(a)	For	the	first	3,000	Nil
	square metres
(b)	Between		3,000	square	10% of the area excluding roads or in the alternative
	metres		and	10,000	he shall pay the market value of the equivalent land
	square metres				excluding the first 3000 sq.m. as per the valuation of
					the  Registration  Department,  only  where  it  is  not
					possible  to  provide  open  space  due  to  physical
					constraints. No such area reserved shall measure less
					than 100 square metres with a minimum dimension of
					10 metres.
					The space so reserved shall be transferred to the
					Authority or to the Local body designated by it, free of
					cost,  through  a  registered  gift  deed.  In  cases  of
					residential developments, the Authority or the local
					body concerned may permit the Residents Association
					or  Flat  Owner’s  Association  for  maintaining  such
					reserved space as park / playground and in such
					cases  where  the  Authority  decides  to  permit  the
					Resident’s Association or Flat Owner’s Association for
					maintaining it, direct access from a public road for the
					reserved area may not be required, and right of access
					to the Authority or the local body concerned through
					set  back  space  shall  be   transferred  through  a
					registered gift deed along with the reserved space.
(c)	Above	10,000		square	Ten per cent of the area excluding road shall be
	metres				reserved and this space shall be transferred to the
					Authority or to the local body designated by it, free of
					cost, through a gift deed. It is obligatory to reserve the
					10 per cent of the site area and no charge can be
					accepted in lieu in case of the new developments or
					redevelopments.

 

• The site so reserved shall be exclusive of the set back spaces and spacing between blocks prescribed in these rules, and shall be free from any construction / structure.

 

 

• For the purpose of this regulation, existing development is defined as one where the extent of ground area covered by structures already existing (prior to application for planning permission) is 25 per cent and above of the total site area.

 

• In case of additions to existing developments, where it is difficult to leave the 10 per cent area as open space for community recreational purposes, the Authority reserves the right to collect the market value of equivalent land in lieu of the land to be reserved. However, if on a future date, the applicant wants to demolish the existing structure and raise new structures on the site in question, the community recreational space as per the rule shall be reserved.

 

• The Authority reserves the right to enforce the maintenance of such reserved lands by the owner to the satisfaction of the Authority or order the owner to transfer the land to the Authority or any local body designated by it free of cost, through a registered gift deed. The Authority or the local body designated by it, as the case may be, reserves the right to decide on entrusting the maintenance work to any institution / individual on the merits of the case.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Provisions for persons with disabilities

 

1. In order to provide barrier free environment in the buildings and premises used by public the following shall be provided for persons with disabilities. (It does not apply to residential developments)

 

1. a. Site planning:

 

Every building should have at least one access to main entrance /exit to the disabled which shall be indicated by proper signage. This entrance shall be approached through a ramp together with stepped entry. The ramp should have a landing in front of the doorway.

 

1. Parking:

 

1. Surface parking for at least two Car Spaces shall be provided near entrance for the physically handicapped persons with maximum travel distance of 30 metres from building entrance.

 

3. The width of parking bay shall be minimum 3.6metre.

 

• The information stating that the space is reserved for wheel chair users shall be conspicuously displayed.

1. Building requirements:

 

1. i) For approach to the plinth level, and in other levels where ramps with gradients are necessary or desired they shall conform to the following requirements.

 

Ramps slope shall not be steeper than 1 in 12

 

Its length shall not exceed 9m between landings and its width shall be minimum 1.5m with handrails on either side.

Its surface shall be non slippery.

 

Minimum size of landing shall be 1m. x 2m.

 

1. Among the lifts provided within the premises at least one lift shall have the facility to accommodate the wheel chair size 80cm x 150cm.

 

• The doors and doorways shall be provided with adequate width for free movement of the disabled persons and it shall not be less than 90 cm.

 

1. Stairs shall have the handrail facilities as prescribed in the National Building Code.

 

1. Minimum one special WC in a set of toilet shall be provided for the use of

 

handicapped as specified in National Building Code with essential provision of washbasin near the entrance for the handicapped

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ANNEXURE XXIV

 

Electrical Rooms

 

 

• Electrical rooms in Special building, Group development, and Multi-storeyed Building developments shall conform to the following:

 

• Tamilnadu Electricity Board Standards.

 

1. Indoor space required within the premises for installing floor mounted Distribution Transformer and associated switchgear.

 

1. An electrical room for accommodating the transformers and associated switchgears shall be provided at the ground floor, either within the built up space of the multi-storeyed buildings or outside the building and within the premises of the multi-storeyed buildings nearer the main entrance of the building. The associated switchgear shall be separated from the transformer bays by a fire-resisting wall with a fire resistance of not less than 4 (four) hours.

 

3. The width of the approach road to the above said electrical room shall not be less than 3.0 metres.

 

2. The electrical room with RCC roof shall have clear floor area 6m. X 4m. with a vertical clearance of 2.75m.

 

1. Three sides of this room shall be covered with brick walls. The fourth side, towards the approach road shall be covered with M.S. Rolling Grill Shutter of width not less than 3 metres with locking facility.

 

1. The electrical room shall be fitted with 2 Nos. exhaust fans in the wall facing the approach road, one on either side of the shutter.

 

1. The electrical room shall have raised cement flooring with cable duct of 450-mm. width and 750-mm. depth, all around inside the room and close to the exterior walls shutters. The flooring shall slope towards the cable duct. The cabled duct shall be covered with RCC slabs of thickness not less than 75 mm. (3 inches). The covered slabs shall flush with the cement flooring. The radius of curvature of the cable ducts at the turnings inside the electrical room shall not be less than one metre.

 

(ii) The open space within the premises for  installation.

 

A clear space of 10 m. x 4 m. or 5 m. x 5m. open to the sky and having an approach road of width not less than 3 metres, upto the public road shall be provided within the consumer premises, preferably at the main entrance.

 

 

 

 

• Directorate of Fire and Rescue Services Standards:

 

• No transformer shall be located below the first basement or above the ground floor

 

• A sub station or switch station with apparatus having more than 2000 litres oil shall not be allowed in the case of indoor transformer.

 

• The indoor transformer should preferably be housed in a fireproof room with walls and doors sufficient fire rating.

 

• The room in the ground floor of the basement housing the transformer shall have a free access to the outside.

 

• There shall be a curb or a dwarf wall around the transformer so that oil spills if any, is contained within the curb. There shall also be a suitable drain with a ‘ flame-arrester’

 

• If in the basement, the transformers shall be adequately protected against fire by a high velocity water spray or a CO2 flooder of suitable capacity, depending upon the size of the transformer.

 

• The switchgears, if any shall be housed in a separate room with suitable fire resistance walls.

 

• The transformers shall be located only in the periphery of the basement or ground floor, observing suitable clearances.

 

• DCP or CO2 portable fire extinguishers of a minimum capacity of 10 kg. shall be kept near the doorway housing the transformer.

 

• All indoor transformers shall be subjected to periodic inspection and shall be replaced in good time so that there is no fire risk.

 

• The room shall be well ventilated so that the transformer remains cool.

 

• The room shall have emergency and automatic lighting with independent power supply.