Work out parking space requirement instantly with clear inputs, formula shown and shareable results.
Planning codes express parking demand as one space per unit of built-up area, with a further percentage added for visitors. The land or structure needed follows from the area per space, which at 25 square metres already includes the aisle and manoeuvring space rather than just the bay itself.
Space count
Occupant spaces = ceil(built-up area / area per space); visitor = ceil(occupant x visitor share)
Area
Parking area = total spaces x area per space including circulation
Preliminary estimate only. Parking provision must be confirmed against local development control regulations and accessible parking requirements.
Occupant spaces = ceil(built-up area / area per space); visitor = ceil(occupant x visitor share). Planning codes express parking demand as one space per unit of built-up area, with a further percentage added for visitors.
Aisles, ramps and manoeuvring space roughly double the footprint. Using the bay area alone understates the parking floor plate by half.
This calculator takes 4 inputs: Built-up area, Built-up area per required space, Visitor parking share, Area per parking space. The pre-filled defaults are a realistic worked example — replace them with your own site or project figures.