CMDA FSI rules for buildings in Chennai

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Due to the sheer number of construction and development projects being carried out simultaneously, often the deciding factor for the question “Which project is better?” is dependent on whether these projects meet Chennai Metropolitan Development Authority (CMDA) guidelines. Though the CMDA guidelines for developmental projects are quite extensive, let us look into one of the most important highlights that buildings should meet in order to receive CMDA approval.

The rules laid down by the CMDA divide buildings into three types, ordinary buildings, special buildings and multi-storeyed buildings. This classification is based on the height of the buildings, number of households in a plot and extent of commercial activity. The ‘ordinary’ buildings are the buildings that do not exceed a height of 9 m (30’) in height. These are generally low ground plus one-storeyed building. The ‘special buildings’ cannot exceed a height of 15 m (50’). These are generally residential or commercial buildings with more than two floors but not more than 4 floors. The ‘special buildings’ are, as the name suggests, a special type of multi-storeyed buildings. These consist of residential buildings with more than four dwelling units and commercial buildings exceeding 300 meter square (3228 sq. ft.) of plinth area.  When it comes to these buildings, the height of 15 m matters more than the use to which they are put, be it residential or commercial.

However, most of the buildings, nowadays, fall under the ‘special category’ section and hence, this is the topic we will take forward here.

The Floor Space Index (FSI), also known as Floor Area Ratio (FAR), Floor Space Ratio (FSR) and Plot Ratio, is the index by which the total constructible area can be calculated.  This index is used by the authorities to control the density of development.

Constructible area = Land Area * FSI Index

The FSI for ordinary and special buildings (residential and commercial) is 1.5. This means that the plinth area should not exceed 1.5 times the area of the plot where construction is being projected. If the area of the plot where the construction is proposed is 9600 sq.ft, with a 1.5 FSI, the total plinth area is 14,400 sq.ft. However, there are a few exemptions to the this calculation like parking area, electrical transformer room, garbage area, caretaker's room, etc., provided the plinth area of such service areas does not exceed 10% of the total plinth area. Staircase headroom and the lift machine room in the topmost floor are also excluded from this calculation.

FSI can be availed on all plots that abut on a road that has a minimum width of 30 feet. The premium FSI for plots that meet roads that have a width of 30 feet or more and lesser than 40 feet is 20% of the normal FSI. The buildings on plots that abut roads that have a width more than 40 feet and lesser than 60 feet, have a premium FSI of 30% and the plots that abut a road with a width of 60 feet or more have a premium  FSI of 40%. However, premium FSIs are allowed for specific regions only and are also accompanied by additional premium fees.

 To find out more about Floor Space Index (FSI) in Chennai, visit "Floor Space Index"


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Comments   

0 #19 Vijay Viswanathan 2014-10-27 02:36
Hi Kanagu,

I have responded to your query in the following link:

http://www.indiarealestateforums.com/forum/chennai/1289-residential-construction-in-industrial-land#3375

Please feel free to ask any further queries or make any further comments in the above mentioned link so that I can get back to you on a quick note.

Regards,
Vijay
Quote
0 #18 kanagu ramaswamy 2014-10-26 20:05
Dear Sir,
Your article was really informative! Thanks!
I would like to know whether an industrial land can be used for building appartments.
I read that industrial includes commercial and residential. Please help me out!
Use Zone III (b) General Industrial Use Zone
Uses permitted
All commercial uses listed under Use Zone 1(a) 1(b) and 2 i.e. residential and
commercial use zones
Quote
0 #17 Vijay Viswanathan 2014-09-24 04:34
Hi Prabhakar,

I have posted a response to your query in the following link:

http://www.indiarealestateforums.com/forum/chennai/1208-special-fsi-for-increasing-construction-area#3160

Please feel free to post any further queries or post any further comments in the above mentioned link so that I can get back to you on a quick note.

Regards,
Vijay
Quote
0 #16 Prabha_Chennai 2014-09-23 18:18
Hi, Your article provided good information about FSI, thanks for your blog. I have plot measuring 4800 ft(80 ft front, 60 on side), the plots front is on 40 ft road, side is on 30 ft road, its a corner property. My plan is to build a basement parking + ground floor as commercial(shop s) + 2 Floor of residential. Is it possible to get approval, can I claim an special FSI to increase my construction area to achieve my plan.

Thanks
Prabhakar
Quote
0 #15 Krishna 2014-04-28 20:22
Could you please clarify a little bit on what information is required?

Thanks and Regards,
Krish

Quoting Planing approval det:
Requiered details of Planning approval mimimum sq.feet
Quote
+1 #14 Planing approval det 2014-04-28 12:59
Requiered details of Planning approval mimimum sq.feet
Quote
+1 #13 Krishna 2014-03-26 00:44
Hello Ram,

I am assuming that you plan to build a residential flat or something here. Please let me know whether I am right. Also, could you please give me the exact information on the width of the abutting roads and the frontage.

Regarding the new proposal, it doesn't look like it will be approved. There are some strong questions against the proposal to which no answers have yet been given.

Thanks and Regards,
Krish

Quoting S.J.RAM:
Hello Krishna, Very interesting article on F.S.I, Thank you. I would like to ask couple of clarifications if I may.
Property is approx 3600 sq feet(40'x90')located on 11th Main Road Anna Nagar. A corner plot 90'facing 11th Main Rd. I believe there is a proposal to offer increased FSI for properties located within 1/2 km of Metro rail station.
1. Any thougts on the FSI based on the current FSI regulations.
2. Your views on the chances of raising the FSI due to Metro rail.
Thank you again for your input.
Quote
0 #12 S.J.RAM 2014-03-25 04:32
Hello Krishna, Very interesting article on F.S.I, Thank you. I would like to ask couple of clarifications if I may.
Property is approx 3600 sq feet(40'x90')lo cated on 11th Main Road Anna Nagar. A corner plot 90'facing 11th Main Rd. I believe there is a proposal to offer increased FSI for properties located within 1/2 km of Metro rail station.
1. Any thougts on the FSI based on the current FSI regulations.
2. Your views on the chances of raising the FSI due to Metro rail.
Thank you again for your input.
Quote
0 #11 Krishna 2014-03-25 00:48
Hello Sateesh,

Are you planning for a residential, mixed residential or commercial building?

Thanks and Regards,
Krish

Quoting SATEESH KUMAR REPAKA:
What is Achievable FSI for the following property as per CMDA guide lines/

Area - 37.5 grounds
Frontage : 347 ft.
Road width - 30 ft.
Quote
+1 #10 SATEESH KUMAR REPAKA 2014-03-24 18:43
What is Achievable FSI for the following property as per CMDA guide lines/

Area - 37.5 grounds
Frontage : 347 ft.
Road width - 30 ft.
Quote

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