What can you build on a 40×60 ft plot in Chennai?
A 40×60 ft plot is 2,400 ft² (223 m²) — about 5.5 cents, or 1 grounds. Under the Tamil Nadu Combined Development and Building Rules, 2019 (non-high-rise residential), it carries an FSI of 2 and a 12 m height cap; the setbacks — and so your buildable footprint — depend on the width of the road the plot faces.
Buildable area by road width
Assuming the 40 ft side faces the road (side and rear setbacks 1.5 m each; front setback varies):
| Road width | Front setback | Buildable footprint | Per floor | Max total built-up (FSI 2) |
|---|---|---|---|---|
| Under 30 ft (under 9 m) | 1.5 m (4.9 ft) | ~30.2×50.2 ft | ~1,513 ft² | 4,800 ft² |
| 30–59 ft (9–18 m) | 3 m (9.8 ft) | ~30.2×45.2 ft | ~1,364 ft² | 4,800 ft² |
| 60–100 ft (18–30.5 m) | 4.5 m (14.8 ft) | ~30.2×40.3 ft | ~1,216 ft² | 4,800 ft² |
| Over 100 ft (30.5 m+) | 6 m (19.7 ft) | ~30.2×35.4 ft | ~1,067 ft² | 4,800 ft² |
Footprints are the rectangle left after setbacks; the FSI cap applies to the whole building across floors. Corner plots, wider frontages and layout conditions change these numbers — the generator computes them for your exact facing and road.
Get a floor plan for a 40×60 plot — free
Plot2Plan turns these limits into an actual room-by-room floor plan: the rule engine freezes the legal envelope, AI arranges the rooms inside it, and a validator checks every wall, door and stair before you see it.
Frequently asked questions
How many floors can I build on a 40×60 plot in Chennai?
The height cap is 12 m (about four floors at 3 m each), and FSI 2.0 limits total built-up area to 4,800 ft². On a 30 ft road: Building the full setback footprint of ~1,364 ft² per floor reaches the FSI cap in about 4 floors.
What is the setback for a 40×60 plot in Chennai?
Side and rear setbacks are 1.5 m each. The front setback depends on the road: 1.5 m on roads under 9 m, 3 m on 9–18 m roads, 4.5 m on 18–30.5 m roads and 6 m on roads over 30.5 m (TNCDBR 2019, Rule 35(1)(a)).
How much construction is allowed on a 40×60 plot in Chennai?
At FSI 2.0, a 2,400 ft² plot allows up to 4,800 ft² of total built-up area across all floors, subject to setbacks and the 12 m height limit.
This size by facing
Vastu placement, entrance position and sun differ by facing — each gets its own guide:
Other plot sizes
- 20×30 ft plot
- 20×40 ft plot
- 24×36 ft plot
- 25×40 ft plot
- 30×40 ft plot
- 30×50 ft plot
- 30×60 ft plot
- 40×40 ft plot
- 50×80 ft plot
New to the rules? Start with the Chennai setback rules guide.