Amendments to the Tamil Nadu Combined Development and Building Rules, 2019 (26 Nov 2024)
The Housing and Urban Development Department issued G.O.Ms. No.225, Housing and Urban Development [UD4(1)], dated 26th November 2024, amending the Tamil Nadu Combined Development and Building Rules, 2019. It defines flatted factories and industrial parks, replaces the planning parameters for industries, and prescribes standards for non-high-rise flatted factories and industrial hostels or dormitories.
What the amendment changes
The Amendments to the Tamil Nadu Combined Development and Building Rules, 2019 were published in the Tamil Nadu Government Gazette on 5th December 2024. The changes add two definitions and substitute the planning parameters governing industrial buildings under rule 36.
A flatted factory is defined as a multi-storeyed industrial building designed for manufacturing, assembly or storage. Industrial parks include parks developed by specified government entities, qualifying government-linked companies and private developers that meet stated conditions.
Who may be affected
G.O.Ms. No.225, Housing and Urban Development [UD4(1)], dated 26th November 2024, may affect owners, developers, occupiers and professionals dealing with:
- Cottage, green, orange or red industries.
- Flatted factories in industrial plots or parks.
- Hostels or dormitories incidental to industries or located in industrial plots or parks.
- Private industrial parks proposed on at least 100 acres.
A qualifying private industrial park must be primarily for manufacturing. Manufacturing processing areas must form at least 50 percent of the total built-up area, accommodate at least ten different manufacturing entities, and include common effluent treatment and common sewage treatment facilities.
Main building parameters
The substituted industrial planning parameters include:
- Cottage, green, orange and red industries require a minimum road width of 7 metres, a maximum height of 18.30 metres and normally permissible Floor Space Index of 2.
- Cottage industries require a 1.5 metre front and side setback, with no rear setback.
- Green and orange industries have front setbacks ranging from 1.5 metres to 6 metres according to the abutting road width, with 2 metre side and rear setbacks.
- Red industries require 6 metre front, side and rear setbacks.
- Non-high-rise flatted factories require a 9 metre road, maximum height of 18.30 metres, normally permissible Floor Space Index of 2, premium Floor Space Index of 1 and maximum permissible Floor Space Index of 3. Their setbacks are 6 metres at the front and 4.5 metres at the sides and rear.
- Non-high-rise industrial hostels or dormitories have the same road width, height and Floor Space Index limits, with a 3 metre setback around the building.
The rules also require applicable parking, rainwater harvesting and land reservation for parks or playgrounds. Certain incidental structures up to 4 metres high may occupy setback spaces, but not more than one-third of the length of any one side of the site.
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Common questions
Does the amendment introduce rules specifically for flatted factories?
Yes. It defines flatted factories as multi-storeyed industrial buildings for manufacturing, assembly or storage and sets planning parameters for non-high-rise flatted factories in industrial plots or parks.
Can a private developer create an industrial park under these rules?
Yes, subject to conditions including a minimum area of 100 acres, a primary focus on manufacturing, at least 50 percent manufacturing processing area, at least ten manufacturing entities, and common effluent and sewage treatment facilities.
What is the maximum Floor Space Index for a non-high-rise flatted factory?
The normally permissible Floor Space Index is 2, premium Floor Space Index is 1, and the maximum permissible Floor Space Index is 3.
Are industrial hostels and dormitories covered?
Yes. A non-high-rise hostel or dormitory incidental to industries or located in an industrial plot or park requires a minimum 9 metre road and a 3 metre setback around the building.
