Work out the maximum buildable area on your land
Plot ratio (also called floor area ratio) sets the maximum total floor area you're permitted to build relative to your plot size. Enter your plot size and the permitted plot ratio for your site to get an estimate of the maximum built-up area allowed. This is a planning estimate only — always confirm the exact permitted ratio with your local authority before finalising a design.
Permitted plot ratios vary by zoning, local authority and land use category, and some authorities apply additional setback, height or coverage restrictions on top of plot ratio. This tool gives a simple planning estimate only. For a figure specific to your site, get in touch with our team.