Setback & Ground Coverage Calculator
Work out the buildable footprint of a plot after front, rear and side setbacks, capped by the maximum ground coverage.
Inputs
Plot
ft
ft
Setbacks (open margins)
ft
ft
ft
ft
Rules
%
Buildable footprint
1,440 sq ft
60% of the plot · limited by setbacks
Setback envelope
45 × 32 ft
1,440 sq ft
Coverage limit
1,440 sq ft
60% of 2,400
Floors to use full FSI
3
3,600 sq ft total BUA
Plan view
Summary
- Plot area
- 2,400 sq ft
- Open area (setbacks)
- 960 sq ft
- Envelope after setbacks
- 1,440 sq ft
- Allowed footprint
- 1,440 sq ft
How this calculator works
Setbacks are mandatory open margins between your building and the plot boundary. The buildable envelope is (length − front − rear) × (width − side1 − side2). The actual footprint allowed is the smaller of this envelope and the maximum ground coverage % × plot area.