The accessible space table
Count the total spaces in each parking facility, then use this table from ADA section 208.2:
- 1–25 total spaces: 1 accessible
- 26–50: 2
- 51–75: 3
- 76–100: 4
- 101–150: 5
- 151–200: 6
- 201–300: 7
- 301–400: 8
- 401–500: 9
- 501–1,000: 2% of total
- 1,001 and over: 20, plus 1 for each 100 over 1,000
How many must be van accessible?
At least one of every six accessible spaces (or fraction of six) must be van accessible. So a lot that needs four accessible spaces needs at least one van space.
Van-accessible spaces need a wider access aisle and vertical clearance for lift-equipped vans. Massachusetts commonly requires an 8-foot access aisle for van spaces.
Where accessible spaces must go
Accessible spaces should be on the shortest accessible route to an accessible building entrance. For multiple entrances, spread them out. Slopes in the space and aisle should not exceed 1:48 (about 2%).
Massachusetts-specific points
The Massachusetts Architectural Access Board (AAB) enforces 521 CMR alongside the federal ADA. Local building inspectors often check accessible stalls during occupancy and renovation inspections. When the two rules differ, follow the stricter one.
Frequently asked questions
Do small lots need an accessible space?
Yes. Even a lot with one to 25 spaces needs at least one accessible space, and it must be van accessible because it is the first one.
Do accessible spaces count toward my total?
Yes. Accessible spaces are included in the total parking count.
Who enforces accessible parking in Massachusetts?
The Architectural Access Board enforces 521 CMR, local building officials check it during inspections, and the U.S. Department of Justice enforces the federal ADA.
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