A. Srivathsan

They will be on a par with those of Chennai Metropolitan Area

  • Minimum plot size required for residential buildings will be 95 square meters, and floor space index 1.6
  • Multi-storey building will be permitted on roads 12 metre wide
  • IT buildings will enjoy full relaxation floor space index norms

    CHENNAI: Municipalities and corporations in Tamil Nadu, except the Chennai Metropolitan Area, will soon have new development control rules that will supplement the building rules in force in many local bodies.

    The rules compiled by the Directorate of Town and Country Planning (DTCP) were circulated to various departments. A government source said the rules would be finalised in a month or two. They will be on a par with those of the Chennai Metropolitan Area. The minimum plot size required for residential buildings will be 95 square meters, and the floor space index 1.6. For commercial buildings, the floor space index will be 1.75. The proposed rules allow multi-storeyed building on roads 12 metre wide. But, according to the CMDA rules, multi-storeyed buildings can come up only on 18-metre-wide roads. Under the new system, there will be special rules for information technology buildings, which will enjoy full relaxation of the floor space index norms. The permissible road width rules for residential layouts have also been modified.

    At present, Chennai city and its metropolitan area alone have detailed development control rules. These are periodically revised to regulate the nature of construction. The building rules adopted in other cities are inadequate. It was long felt that the rules should be amended and physical planning of other cities streamlined. Unfortunately, the proposed rules will cover only areas that have been declared local planning areas. They will not be applicable to large parts of the State that are yet to be designated as such. The immediate implication is that the suburbs of cities such as Chennai will continue to develop in an ad hoc manner. The local bodies, which administer the suburbs, will continue to permit residential layouts based on outdated rules.

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