Floor Area Ratio is the total built floor area permitted on a plot, as a multiple of the plot itself. These are the rules that set it, and the ones that decide what does not count towards it.
Maximum Floor Space Index is 2.0 for Non High Rise buildings up to 18.30 m in height that exceed 16 dwelling units or 300 m² of commercial area.
TNCDBR 2019, Non High Rise development control table, item C — and 1 related rules below.
Maximum Floor Space Index is 2.0 for Non High Rise buildings up to 18.30 m in height that exceed 16 dwelling units or 300 m² of commercial area.
| Base FAR | 2 |
A Continuous Building Area takes up to 16 dwellings or up to 300 m² of commercial use. An EWS Area takes up to 16 dwellings but no commercial allowance is stated against it. In other areas the ceiling follows the road: up to 8 dwellings on a road of 3.0 to 6.0 m, and up to 16 dwellings or 300 m² of commercial use once the road reaches 6.0 m. Maximum FSI is 2.0 across all four columns.
Permissible floor area, coverage and height for your plot — straight from the HP slabs.
FAR & ground coverage calculator →Official text: Tamil Nadu Combined Development and Building Rules, 2019 ↗
Rules change and we would rather hear it from you than have somebody build to a stale number. No account needed.
Trace your tatima to get the real area, side lengths and a dimensioned plan. Automatic compliance checking runs on Himachal rules today — for Tamil Nadu the 33 rules published here are the reference, and the check is yours to make.
Trace your tatima → All Tamil Nadu rules →