Work out plot coverage instantly with clear inputs, formula shown and shareable results.
Ground coverage is the building footprint as a percentage of the plot. Planning codes limit it independently of floor space index so that open space, light, ventilation and drainage are preserved at ground level even where extra height is allowed.
Coverage
Coverage percent = ground floor footprint / plot area x 100
Permitted footprint
Allowed m² = plot area x permitted coverage
Preliminary estimate only. Coverage definitions and permitted limits must be confirmed against local development control regulations.
Coverage percent = ground floor footprint / plot area x 100. Ground coverage is the building footprint as a percentage of the plot.
Coverage caps the footprint and FSI caps the total area, so together they set a minimum number of floors. A tight coverage limit with a generous FSI forces a taller, slimmer building.
This calculator takes 3 inputs: Plot area, Ground floor footprint, Permitted ground coverage. The pre-filled defaults are a realistic worked example — replace them with your own site or project figures.