Visitor Parking Requirement Calculator

Work out visitor parking requirement instantly with clear inputs, formula shown and shareable results.

About Visitor Parking Requirement Calculator

Visitor parking is normally specified as a percentage of dwelling units, commonly five to ten percent, and it must be genuinely accessible rather than allocated to residents. The area required includes aisles and manoeuvring, which roughly doubles the bay footprint.

Formulas

Visitor spaces

Spaces = ceil(units x visitor percentage)

Area

Area = spaces x area per space including circulation

Worked example

With the default values below, Visitor Parking Requirement Calculator returns Visitor spaces required of 20. Change any input above and every figure here is recalculated in your browser.

Inputs used

Residential unitsminimum 1: 200
Visitor spaces as share of unitsaccepts 1–50 %: 10 %
Area per space including circulationminimum 50 ft²: 320 ft²

Results

Visitor spaces required: 20
Area needed for visitor parking: 6,400 ft²
Visitor spaces per unit: 0.100
Units served per visitor space: 10.00

Step by step

1Values used
2Visitor spaces
3Area
4Visitor spaces required= 20
5Area needed for visitor parking= 6,400 ft²
6Visitor spaces per unit= 0.100
7Units served per visitor space= 10.00

Assumptions and limits

The result is derived only from the 3 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
Figures are rounded for display to 3 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
Preliminary estimate only. Visitor parking requirements are set by local development control regulations and must be confirmed with the planning authority.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Preliminary estimate only. Visitor parking requirements are set by local development control regulations and must be confirmed with the planning authority.

Frequently Asked Questions

How is the Visitor Parking Requirement figure worked out?

Spaces = ceil(units x visitor percentage). Visitor parking is normally specified as a percentage of dwelling units, commonly five to ten percent, and it must be genuinely accessible rather than allocated to residents.

Why is visitor parking so often inadequate?

It is unallocated, so it gets colonised by residents with second cars and by service vehicles. Enforcement, not the count, is usually the binding problem.

What values do I need to enter?

This calculator takes 3 inputs: Residential units, Visitor spaces as share of units, Area per space including circulation. The pre-filled defaults are a realistic worked example — replace them with your own site or project figures.