Parking Garage Vertical Clearance: Code Minimums and Vans

Vertical clearance is the height from the floor to the lowest overhead obstruction in a parking facility, such as a beam, pipe, sprinkler, light, sign or gate housing, and it decides which vehicles can enter and park.

At a glance

Code minimum: 7 feet in vehicle and pedestrian areas under the International Building Code
Accessible vans: 98 inches on the route to and from van-accessible spaces under the 2010 ADA Standards
Key fact: Posted clearance must reflect the lowest item added after construction, not the slab-to-beam dimension

The structure may leave room that pipes, lights and signs take back. The posted clearance and the clearance bar at the entry must reflect the lowest item on the route. Schematic.

Clearance is usually fixed early, when floor-to-floor heights and beam depths are set, and then quietly reduced as sprinkler mains, drains, lights, cameras, signs and gate housings are hung beneath the structure. The number that matters is the lowest one along the route a vehicle actually drives.

Try it

What fits under your garage?

Set the slab-to-floor height, then hang a sign and a sprinkler pipe and see which vehicles still fit.

At 8 ft 4 in of structure, adding a sign and pipe 10 inches lower drops the clearance to 7 ft 6 in, below the 98 inches an accessible van route needs.

Vehicle heights are typical values for illustration; check the specific vehicles you expect.

Who needs more

Wheelchair-accessible vans: 98 inches on the vehicular route to van spaces, their access aisles and the exit (2010 ADA Standards 502.5).
Delivery, utility and high-roof vans: often taller than a garage can take, so they need a grade-level route or loading area.
Pickups and SUVs with racks or roof boxes: within code minimums but close enough to hit low signs.
Future uses: higher clear heights and flat floors make a structure easier to convert to other uses later.

The Parkonomics view

Treat clearance as a performance requirement, not a structural by-product: state it for each route in the design criteria, coordinate every overhead trade against it, and verify the posted clearance during operational readiness. A clearance bar that is lower than the garage, or higher than the sign behind it, both cost money.

Further reading: Designed to Park, or Designed to Impress?, The Evolution of U.S. Parking Structures in 2026