Glossary
Floor Space Ratio (FSR)
Written and verified by Struqt’s registered architects · Last verified July 2026
Total floor area allowed as a multiple of the lot area. FSR 0.5 on a 600m² lot = 300m² of floor space. Used together with height limits to cap building bulk.
Source: NSW Planning Portal
What it means for what you can build
FSR caps total floor area as a multiple of lot area, so it directly sets how much house you can build. It works with height limits to control bulk.
Related terms
See this on your own property
Run any Australian address through Struqt to see whether floor space ratio (fsr) applies to your block, and what it means for what you can build.