FAR / FSI Calculator
How much can you actually build on your plot? Enter your plot area and get the permitted built-up area, ground footprint, number of floors, and which bylaw will bite first — for 12 Indian cities.
BBMP Building Bye-Laws 2003
≈ 2,400 sq.ft · 223 sq.m
Wider roads usually unlock higher FAR.
What you can build
Bengaluru · Residential · FAR 1.75
Applied to a 2,400 sq.ft plot on a 12 – 18 m.
Max built-up area
4,200 sq.ft
390 sq.m
Ground footprint
1,560 sq.ft
65% coverage
Floors (estimate)
G + 3
4 floors
Max height
15 m
4 floors @ 3.2m
Net after setbacks
1,340 sq.ft
approx footprint
Setbacks (F / R / S)
3 / 1.5 / 1.5 m
Parking (min)
3 slots
1 per unit
Unused FAR
—
fully usable
Binding constraint
Your project is limited by FAR.
You use every square metre of built-up area the bylaw allows. To build more, you'd need premium FSI (where available) or a plot in a zone with higher base FAR.
Approximate plan view · assumes square plot
City note
Above 15m requires fire NOC. Setbacks increase for plots >360 sq.m or roads >12m.
These numbers are a preliminary estimate based on published bylaws. Final permissions depend on site-specific conditions — zoning overlays, CRZ, airport funnels, heritage notifications, road widening plans and utility corridors. Always confirm with your municipal authority and a licensed architect before finalising a design.