Work out open space requirement instantly with clear inputs, formula shown and shareable results.
Layout regulations require a minimum share of the site to be set aside as usable open space, commonly ten percent, and it must normally be in consolidated parcels of a minimum dimension rather than scattered leftovers. Comparing provided against required shows the shortfall that has to be found from saleable area.
Open space requirement
Required = layout area x required percentage; shortfall = provided - required
Preliminary estimate only. Open space definitions, minimum dimensions and percentages are set by local development control regulations.
Required = layout area x required percentage; shortfall = provided - required. Layout regulations require a minimum share of the site to be set aside as usable open space, commonly ten percent, and it must normally be in consolidated parcels of a minimum dimension rather than scattered leftovers.
Generally no. Regulations usually exclude setbacks, road margins and areas below a minimum dimension, because the intent is usable recreational space rather than residual land.
This calculator takes 3 inputs: Layout area, Open space required, Open space provided. The pre-filled defaults are a realistic worked example — replace them with your own site or project figures.