ADA Parking Space Calculator
Estimate the federal minimum number of accessible and van-accessible stalls for a parking lot. Use it for planning, then confirm the full requirement with a design professional.
The federal minimum table
The 2010 ADA Standards set a minimum number of accessible spaces that grows with the total parking count. Most facilities use the table below. Hospital outpatient facilities and rehabilitation or outpatient physical therapy facilities have their own percentage-based requirements because of higher expected use. Van-accessible spaces are counted as at least one of every six accessible spaces, and never fewer than one.
| Total spaces in lot | Minimum accessible spaces |
|---|---|
| 1 to 25 | 1 |
| 26 to 50 | 2 |
| 51 to 75 | 3 |
| 76 to 100 | 4 |
| 101 to 150 | 5 |
| 151 to 200 | 6 |
| 201 to 300 | 7 |
| 301 to 400 | 8 |
| 401 to 500 | 9 |
| 501 to 1000 | 2% of total |
| 1001 and over | 20 plus 1 per 100 over 1000 |
Limitations
This estimates the minimum stall count only. It is not a compliance determination and does not evaluate access aisles, slopes, accessible routes, signage, stall dimensions, or existing-condition exceptions. State and local codes, including California, may require more accessible or van spaces. Confirm the full requirement with a CASp inspector or design professional.
ADA parking questions
How many ADA parking spaces are required?
Under the 2010 ADA Standards, the minimum scales with total parking, from 1 space for small lots up to 2 percent of total for 501 to 1000 spaces. This is a federal minimum and local rules may be stricter.
How many van-accessible spaces do I need?
At least one of every six accessible spaces must be van-accessible, and never fewer than one.
Keep going
ADA Compliance Checklist
Screen the lot for common accessible-parking risks beyond stall count.
ADA Issue Documentation Log
Record deficiencies and corrective actions for the property file.
Striping Calculator
Scope the restripe once you know the accessible stall count.
ADA Parking Requirements Guide
Read the plain-English background on accessible parking.