ADA parking lot requirements address the complete arrival experience: a suitable parking space, room to exit the vehicle, identification signs and a usable route to the entrance. Repainting a wheelchair symbol alone does not answer all of those questions.
This guide helps property and facility managers organize a parking review before striping, resurfacing or other work. It summarizes federal requirements for covered facilities, not a site-specific compliance determination. Facility use, existing conditions and state or local rules can change the requirements. For help discussing the work itself, see The Pavement Group’s ADA parking compliance services.
How many accessible parking spaces are required?
For general parking facilities, the federal minimum follows Table 208.2 below. The accessible total includes van-accessible spaces; vans are not added on top of that number. Count each parking facility separately rather than combining all lots and garages on a site. The Department of Justice accessible parking guide explains these general counts.
| Total spaces in each parking facility | Minimum accessible spaces |
|---|---|
| 1–25 | 1 |
| 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 spaces, rounded up to a whole space |
| 1,001 or more | 20, plus 1 for each 100 spaces, or fraction of 100, above 1,000 |
For example, a 75-space surface lot and a separate 75-space garage generally need three accessible spaces each. Applying the 150-space total across both would miss the separate-facility calculation.
Do not use the general table without checking facility type. Hospital outpatient parking, certain rehabilitation and outpatient physical therapy facilities, and residential parking have separate provisions. A residential property may also be subject to other federal accessibility laws. Review Section 208 and the residential scoping provisions with the appropriate design professional.
How many accessible spaces must accommodate vans?
At least one of every six required accessible spaces, or fraction of six, must be van accessible. Six accessible spaces require at least one van space; seven require at least two. This proportion applies to accessible spaces, not every stall in the lot. The rule is in Section 208.2.4 of the ADA Standards.
Check space widths, access aisles and vehicle clearance
The federal minimum layouts provide two van options:
- Car space: 96-inch minimum width with a 60-inch minimum access aisle.
- Van option 1: 132-inch minimum space with a 60-inch minimum aisle.
- Van option 2: 96-inch minimum space with a 96-inch minimum aisle.
Van spaces, their access aisles and vehicle routes serving them require at least 98 inches of vertical clearance. Check the entire vehicle approach, including garage entrances and overhead equipment, rather than only the height above the marked stall. See the Section 502 parking-space specifications.
Access aisles must be marked to discourage parking, extend the full space length and connect to an accessible route. They cannot overlap the vehicle travel lane. Angled van spaces need the aisle on the passenger side. The Department of Justice restriping brief illustrates these relationships.
Measure slopes and inspect the surface
Accessible parking spaces and access aisles must be at the same level, with slopes no steeper than 1:48 in any direction—approximately 2.08%. A lot that looks nearly flat can still need measurement. Patching or a new surface layer should be considered together with the planned elevations and drainage, rather than assuming fresh paint resolves a surface problem. Review the Access Board’s parking guidance when planning the assessment.
The surface must also be firm, stable and slip resistant under Section 302. Document damaged or unstable areas for review alongside the markings.
Use the required signs, not pavement symbols alone
Required identification signs display the International Symbol of Accessibility. Van-space signs also include “van accessible.” The bottom of a required sign must be at least 60 inches above the ground under Section 502.6.
Federal identification exceptions include sites with four or fewer total parking spaces and residential spaces assigned to particular dwelling units. These exceptions do not eliminate the underlying parking requirements. State or local rules may add sign specifications. A pavement symbol does not replace a required sign; see the Access Board’s identification guidance and Section 216.5 exceptions.
Follow the route from the aisle to the entrance
A space is only part of the journey. Accessible routes connect parking access aisles to the entrances they serve; review the Access Board’s accessible-route guidance. Walk the proposed route and document any curb, obstruction or damaged transition for professional review.
Curb ramps and their flared sides cannot project into parking spaces, access aisles or vehicle traffic lanes. Slopes, top landings and transitions also require appropriate design under Section 406. Adding an improvised ramp inside the striped aisle can take away the space needed for vehicle transfers. This guide addresses on-site parking; public street and sidewalk work requires its own applicable review.
What about existing parking lots and restriping?
An existing lot is not automatically exempt. Businesses serving the public have an ongoing obligation to remove access barriers when readily achievable—without much difficulty or expense. The Department of Justice standards overview explains that context.
The Access Board distinguishes limited maintenance, such as repainting a few existing spaces in place, from alterations such as resurfacing or resealing. The actual scope matters. Review the alteration guidance before treating a project as a simple paint refresh. An older layout or previously approved drawing should be reviewed in the context of the proposed work.
A practical checklist before requesting work
- Document the facility. Record each lot or garage, its total spaces, intended users, entrances served and planned work. Flag healthcare or residential uses for the correct scoping review.
- Collect existing information. Gather available drawings, previous assessments, photographs and known access concerns. Identify what still needs field measurement rather than treating an old plan as current evidence.
- Review the whole arrival path. Ask the qualified reviewer to consider spaces, aisles, signs, curb crossings and entrance connections together. A count-only checklist will not capture every issue.
- Separate the work items. Distinguish paint and sign work from any surface, grading, drainage or curb work identified by the design review. This makes quotations easier to compare.
- Plan access during construction. Agree the work sequence and how users will reach the property while work is underway. Communicate the approved plan to site staff and contractors.
- Check the completed work. Compare the installed layout with the approved scope. Keep dated measurements, photographs and unresolved items; a completed invoice alone is not a compliance assessment.
- Keep the information useful. Give the property team a record of the layout and items to watch during routine upkeep, then revisit it when the lot or its use changes.
Turn the review into a clear project scope
A useful next step is a documented scope that separates design requirements from the work needed on the property. Discuss your parking project with The Pavement Group through its ADA parking compliance service page. Confirm site-specific design and local requirements with the responsible accessibility professional before work begins.
Federal sources reviewed October 26, 2026. This planning guide does not certify a property’s compliance or replace the applicable standards and project-specific professional review.