Parking Ratio Calculator

Your details

Ratio mode: find spaces per 1,000 sq ft. Required mode: find how many spaces a building needs.
Selects the ITE standard range for Required Spaces mode. Also used to contextualise your ratio.
The total leasable or gross floor area of the building, not counting parking.
sq ft
The total leasable or gross floor area of the building, not counting parking.
sq ft
For hotel: number of rooms. For residential: dwelling units. For hospital: licensed beds. For school: enrolled students.
Total number of parking stalls currently available or planned.
Applies the 2010 ADA Standards for Accessible Design table to determine required accessible and van-accessible stalls.
Percentage of spaces designated EV-capable or EV-ready. California CALGreen requires 10% for most non-residential buildings.
%
Parking ratioWithin ITE range
4per 1,000 sq ft

Spaces per 1,000 sq ft of rentable area

Sq ft per space250sq ft
ADA accessible spaces4
Van-accessible spaces1
EV-ready stalls8
Surface lot area needed28,000sq ft
Structured parking area per level16,000sq ft
ITE minimum (typical range)2.5
ITE maximum (typical range)4
4 per 1,000 sq ft
Industrial / low-use<1.5Office typical1.5-4Retail / medical4-6.5Restaurant range6.5-12High-turnover use12+

Your parking ratio is 4.00 spaces per 1,000 sq ft, within the ITE typical range for office.

  • The ITE typical range for this use is 2.5 to 4 spaces per 1,000 sq ft.
  • ADA standards require at least 4 accessible stalls, including 1 van-accessible stall.
  • At your chosen EV target, 8 stalls need EV infrastructure.
  • A surface lot would require roughly 28,000 sq ft (0.64 acres) including drive aisles.
  • Local zoning codes may set higher or lower minimums than ITE standards, always verify with your municipality.

Next stepCheck your local zoning ordinance for use-specific minimums and any parking maximum caps common in urban or transit-oriented districts.

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