ADA Parking Lot Requirements for Paving Contractors

Note: This guide summarizes the federal 2010 ADA Standards for Accessible Design (sections 208 and 502). Some states and cities, including California, have stricter rules. Always confirm local code before you lay out a lot.

When you restripe or repave a commercial lot, you are not just laying down paint. You are rebuilding the lot's accessible parking, and if it is wrong, your client is exposed to complaints, failed inspections and ADA lawsuits. Accessible parking is one of the most common targets in ADA litigation, and slopes, aisle widths and missing van stalls are the usual problems.

Contractors who know the rules win more commercial work. Property managers want a contractor who can spot a compliance problem before it becomes a demand letter. This guide covers what you need to know in the field.

Does restriping trigger ADA requirements?

Yes. The U.S. Department of Justice treats restriping a parking lot as an alteration. When a lot is restriped, the accessible spaces must be laid out to meet the 2010 Standards, as far as the existing site allows. That makes every sealcoat-and-restripe job an ADA job.

This is also a sales opportunity. Walk the lot before you bid, count the stalls, and tell the owner whether their accessible parking meets current requirements.

How many accessible spaces does a lot need?

The count is based on the total number of spaces in each parking facility, not the whole site. If a property has two separate lots, count each one on its own.

1 to 25 spaces: 1 accessible space
26 to 50 spaces: 2 accessible spaces
51 to 75 spaces: 3 accessible spaces
76 to 100 spaces: 4 accessible spaces
101 to 150 spaces: 5 accessible spaces
151 to 200 spaces: 6 accessible spaces
201 to 300 spaces: 7 accessible spaces
301 to 400 spaces: 8 accessible spaces
401 to 500 spaces: 9 accessible spaces
501 to 1,000 spaces: 2% of the total
1,001 spaces and over: 20, plus 1 for each 100 spaces over 1,000

Van-accessible spaces: at least one of every six accessible spaces (or fraction of six) must be van accessible. If a lot only needs one accessible space, it must be a van space.

Medical facilities, rehab facilities and residential properties have different counts, so check the standards for those jobs.

Stall and aisle dimensions

There are three standard layouts:

Car-accessible stall: at least 96 inches (8 ft) wide, with an access aisle at least 60 inches (5 ft) wide.
Van-accessible stall, option A: at least 132 inches (11 ft) wide, with a 60-inch (5 ft) access aisle.
Van-accessible stall, option B: at least 96 inches (8 ft) wide, with a 96-inch (8 ft) access aisle.

Key layout rules:

Measure to the centerline of the stripes. Widths are measured from the center of the marking lines.
Two stalls can share one access aisle, except at angled parking.
Van aisles on angled stalls go on the passenger side.
The aisle runs the full length of the stalls it serves.
Mark the aisle with hatching so drivers do not park in it.
Van stalls need 98 inches of vertical clearance across the stall, aisle and the route to and from it. This matters most in parking garages and under canopies.

Slope: the problem paint cannot fix

Accessible stalls and their access aisles cannot slope more than 1:48 (about 2.08%) in any direction. Many older lots fail this test, especially near drainage paths and building entrances.

This is where paving contractors add real value over a striping-only crew. Check slopes with a digital level before you stripe. If the existing accessible stalls are too steep, recommend moving them to a flatter area or regrading that section as part of the job. Also check that no curb ramp extends into the stall or aisle.

Location and accessible route

Accessible stalls must sit on the shortest accessible route to an accessible entrance.
Each access aisle must connect to an accessible route, which usually means a curb ramp or a flush transition to the sidewalk.
Where a building has several accessible entrances, spread the accessible stalls among them.

Signs

Every accessible stall needs a sign with the International Symbol of Accessibility.
Van stalls add a “van accessible” designation.
Mount signs so the bottom edge is at least 60 inches above the ground, so a parked car does not block them.
Lots with four or fewer total spaces do not need a sign, but the stall must still meet the other requirements.

Many states add their own signage rules, such as fine amounts or tow-away notices. Check before you order signs.

Pre-striping ADA checklist

Count total stalls in each separate lot
Calculate required accessible and van-accessible stalls
Confirm stalls are on the shortest route to an accessible entrance
Check stall and aisle slopes with a digital level (max 2.08%)
Verify curb ramps do not extend into stalls or aisles
Lay out widths to stripe centerlines
Confirm 98 in vertical clearance for van stalls in covered areas
Check signs, mounting height and van designation
Confirm state and local requirements
Photograph the finished layout for the client's records

Turn compliance into a selling point

Most property managers do not know whether their lot is compliant. A contractor who shows up with a stall count, slope readings and photos looks like an expert, not a vendor.

Add an ADA review line to every commercial restriping proposal. Use the parking lot striping calculator to price the layout. With PaveDesk striping contractor software, you can capture photos and notes during the site walk and drop them straight into the proposal.

Win more commercial restriping work

PaveDesk helps you build professional proposals with site photos, ADA notes and e-signature built in. Free to start.

See Pricing →