Amendments to the Tamil Nadu Combined Development and Building Rules, 2019 (2024)

What the amendments cover

The amendments issued by the Tamil Nadu Government Housing and Urban Development Department apply mainly to industrial development, including industrial parks, flatted factories and worker hostels or dormitories. They affect industrial landowners, developers, manufacturers and professionals preparing development or building proposals.

New definitions

The amended Tamil Nadu Combined Development and Building Rules, 2019 introduce these concepts:

• A flatted factory is a multi-storeyed industrial building designed for manufacturing, assembly or storage.
• Industrial parks may be developed by listed government entities and their subsidiaries or joint ventures, companies in which the Government of Tamil Nadu directly or indirectly holds at least 40 percent equity, or qualifying private developers.
• For a government entity subsidiary or joint venture, the public sector undertaking must hold at least 25 percent equity in the developer.
• A private industrial park must cover at least 100 acres, be primarily for manufacturing, allocate at least 50 percent of total built-up area to specified manufacturing processing facilities, accommodate at least ten different manufacturing entities, and provide common effluent and sewage treatment facilities.

Industrial building standards

The replacement industrial planning provisions include the following:

• Cottage, green, orange and red industries have a minimum road width of 7 metres, maximum height of 18.30 metres and normally permissible Floor Space Index of 2.
• Non-high-rise flatted factories in industrial plots or parks require a minimum road width of 9 metres and may be up to 18.30 metres high.
• For non-high-rise flatted factories, the normally permissible Floor Space Index is 2, premium Floor Space Index is 1 and maximum permissible Floor Space Index is 3. The minimum front setback is 6 metres and minimum side setback is 4.5 metres.
• Non-high-rise industrial hostels or dormitories require a 9 metre road, may be up to 18.30 metres high, and require a 3 metre setback around the building. The same Floor Space Index limits apply as for non-high-rise flatted factories.
• The provisions require on-site parking, rainwater harvesting and any required land reservation for parks or playgrounds. Certain incidental structures up to 4 metres high may occupy setback spaces, subject to the stated site-length limit.

Parking and permitted use

Dormitories must provide one two-wheeler space for every ten beds. Flatted factories must provide parking based on office and workshop floor area, including car, two-wheeler, cycle and lorry spaces at the stated thresholds. The Industrial Use Zone provision is also expanded to include a hostel or dormitory in the premises.