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Parking Ratio Calculator
Calculate a commercial property’s parking ratio, expressed as parking spaces per 1,000 square feet of building area.
spaces
sq ft
What is a parking ratio?
The parking ratio is a commercial real estate metric expressing how many parking spaces a property provides relative to its building size, typically per 1,000 square feet of rentable area.
The formula
Parking Ratio = (Number of Parking Spaces / Building Square Footage) × 1,000. Office buildings commonly target ratios around 3-4 spaces per 1,000 sq ft, while retail properties often need higher ratios. Requirements vary by municipality and property type.
This calculator is for general real estate planning and education.
Last reviewed August 2026