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ADA Parking Requirements — How Many Accessible Spaces & Sizes

Accessible parking counts come straight from Table 208.2 of the 2010 ADA Standards, and space dimensions from Section 502. One of every six accessible spaces must be van-accessible.

Requirement	2010 ADA Standard	Section
Required count	1–25 total spaces: 1 accessible · 26–50: 2 · 51–75: 3 · 76–100: 4 · 101–150: 5 · 151–200: 6 · 201–300: 7 · then per Table 208.2	§208.2, Table 208.2
Van spaces	At least 1 of every 6 accessible spaces (minimum 1)	§208.2.4
Car space width	96 in. minimum with a 60-in. access aisle	§502.2, §502.3
Van space width	132 in. with a 60-in. aisle, OR 96 in. with a 96-in. aisle	§502.2
Vertical clearance (van route)	98 in. minimum along the vehicle route to and at van spaces	§502.5
Surface slope	Maximum 1:48 in all directions at spaces and aisles	§502.4
Signage	International Symbol of Accessibility, bottom of sign at least 60 in. above grade; van spaces marked "van accessible"	§502.6

Worth knowing

Accessible spaces must be on the shortest accessible route to the entrance (§208.3).
Medical facilities have higher ratios: outpatient 10%, rehabilitation/outpatient physical therapy 20% (§208.2.1–2).
Two accessible spaces may share one access aisle.
State and local codes sometimes require more spaces than the ADA minimum — check your jurisdiction.

Source: 2010 ADA Standards for Accessible Design (U.S. Department of Justice, public domain) — read the full standard at ada.gov. Your local building code (and ICC A117.1 where adopted) applies in addition — find it on your jurisdiction page.

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