ADA Door Width Requirements: Clearance, Hardware, and Thresholds

The Americans with Disabilities Act door width requirements set a minimum clear opening of 32 inches, measured from the face of the door to the stop on the latch side with the door open 90 degrees.¹ That is the number most people come looking for, and it is the right number. It is also only one piece of what makes a door accessible. The 2010 ADA Standards for Accessible Design govern maneuvering space, hardware, opening force, closing speed, thresholds, and door surfaces alongside width, and a door that passes on width can still fail overall.

The 32-Inch Clear Width Rule

For swinging doors, the 32-inch clear width is measured between the face of the door and the stop when the door is open to 90 degrees. Sliding and folding doors are measured at the leading edge of the panel in its fully open position.¹

When the opening sits inside a passage deeper than 24 inches, the minimum jumps to 36 inches. This covers alcoves and thick walls, where a wheelchair user has less room to turn once inside the opening.¹

Nothing may project into the required clear width below 34 inches above the finished floor. Between 34 and 80 inches, projections are allowed but capped at 4 inches. For alterations, the latch-side stop may project up to 5/8 inch into the clear width, and door closers and stops are permitted so long as they are mounted at least 78 inches above the floor.¹

Double doors get one common question wrong. At a double-leaf doorway, at least one active leaf must independently provide the full 32 inches of clear width. You cannot combine two narrow leaves and count the total.¹

Maneuvering Space on Both Sides

Clear width does not make a door accessible on its own. A wheelchair user needs floor space on each side to approach the door, reach the hardware, pull or push it open, and pass through without being struck by the swing. The required maneuvering clearance depends on the direction of approach and on whether the door swings, slides, or folds.

A common example shows what these numbers do. On a front approach to the pull side of a swinging door, you need at least 60 inches of depth perpendicular to the doorway and 18 inches of clear space beyond the latch side. That 18-inch strip is what lets someone in a wheelchair pull alongside the door, open it, and roll through before it swings back.² Other approach angles carry their own dimensions in the standards. One rule applies to all of them: the maneuvering clearance must sit on a level surface, with slopes no steeper than 1:48.

Hardware

Door hardware must be operable with one hand and cannot require tight grasping, pinching, or twisting of the wrist. Lever handles, push bars, and U-shaped pulls meet this. Traditional round doorknobs do not. Operable parts must be mounted between 34 and 48 inches above the floor.¹

The force to activate hardware (pressing a lever, pushing a plate) cannot exceed 5 pounds. That 5-pound limit is separate from the force to move the door itself.³

Opening Force

The maximum force to push or pull a door open is 5 pounds for interior hinged, sliding, and folding doors. This is the continuous force needed to move the door through its arc, not the initial push to overcome inertia and not the force to retract a latch bolt.¹

Two exceptions catch people out. Fire doors follow whatever minimum force the local fire code authority requires, which is often higher than 5 pounds. And exterior hinged doors have no specified maximum opening force under the ADA Standards at all. Wind load, weather seals, and self-closing hardware on exterior doors make a universal cap impractical, so the standards simply do not set one.¹ Where a heavy exterior door creates a practical barrier, an automatic opener is often the sensible fix even though the standards do not require one.

Closing Speed

Doors with closers must take at least 5 seconds to swing from the fully open position at 90 degrees to 12 degrees from the latch. A door that slams shut in two or three seconds can strike a wheelchair user or anyone moving slowly through the opening. Spring-hinged doors follow a slightly different rule: they must take at least 1.5 seconds to move from 70 degrees open to fully closed.¹

Closer adjustment is one of the cheapest ADA fixes available. Most commercial closers have separate screws for sweep and latch speed, and a property manager with a screwdriver and a stopwatch can often bring a non-compliant door into range in minutes.

Thresholds

Under the 2010 Standards, thresholds at new doorways cannot exceed 1/2 inch in height. Any level change between 1/4 and 1/2 inch must be beveled at a slope no steeper than 1:2, and anything above 1/2 inch requires a ramp.¹

Existing and altered thresholds get more room. Up to 3/4 inch is permitted, provided both edges are beveled at 1:2 or less. The exception recognizes that older buildings often have thresholds that predate current standards and cannot be replaced without rebuilding the frame.¹ Even a threshold within these limits can catch a wheeled mobility device if the bevel is steep or the edges are chipped. Flush or very low-profile thresholds are the safest choice when there is any doubt.

Door Surface and Vision Panels

The push side of a swinging door needs a smooth surface within the bottom 10 inches above the floor, running the full width of the door. This is the zone where wheelchair footrests contact the door when someone pushes or props it open, and raised panels, decorative molding, or rough textures can catch or damage mobility equipment. Any joints in that smooth surface must sit within 1/16 inch of the same plane. If a kick plate is added, any cavity it creates must be capped so nothing snags.¹

Sliding doors, tempered glass doors with tapered bottom rails, and doors that do not extend within 10 inches of the floor are exempt from the smooth-surface rule.¹

Where a door or an adjacent sidelight contains a glazed panel meant to be looked through, the bottom of at least one panel must sit no higher than 43 inches above the floor. This gives seated users a sightline through the door before opening it. Panels whose lowest edge sits more than 66 inches above the floor are exempt, since they are too high for anyone standing to use practically anyway.¹

Automatic Doors

The ADA Standards do not require any door to be automatic. When automatic or power-assisted doors are installed, they must comply with industry standards developed under the American National Standards Institute (ANSI) and published by the Builders Hardware Manufacturers Association (BHMA), which cover opening speed, safety sensors, activation devices, and labeling. Automatic doors still have to meet the clear width, threshold, and maneuvering clearance rules that apply to every accessible door.³

Where the Rules Apply

The 2010 ADA Standards apply to newly constructed and altered public accommodations, commercial facilities, and state and local government facilities. Public accommodations cover a wide range of privately owned businesses open to the public, including restaurants, retail stores, hotels, medical offices, and theaters. Commercial facilities are non-residential properties whose operations affect commerce, such as office buildings and warehouses. New construction must comply fully. When an existing building is altered, the altered portions must comply to the maximum extent feasible.⁴

Residential dwellings generally follow different standards, primarily the Fair Housing Act for multi-family housing, unless a home also functions as a public accommodation such as a bed-and-breakfast or a professional office.

Existing Buildings and Barrier Removal

Even without renovations, public accommodations have an ongoing duty to remove architectural barriers when doing so is “readily achievable,” meaning it can be accomplished without much difficulty or expense. Installing offset hinges to widen a doorway, replacing a round knob with a lever handle, and adjusting a door closer are all listed in the federal regulations as examples of readily achievable barrier removal.⁵

Whether a particular fix qualifies depends on the size and financial resources of the business and on the nature and cost of the improvement. A national chain faces a higher standard than a sole proprietor in a rented storefront. The evaluation is not one-and-done: businesses should reassess barriers periodically, since a fix that was too expensive five years ago may be affordable now. If full compliance is not readily achievable, the business must still take whatever partial steps are feasible without creating a safety hazard, and if a specific barrier cannot be removed at all, the regulations require considering alternative methods of providing access.⁵

Consequences of Non-Compliance

Individuals can bring private lawsuits to enforce ADA accessibility requirements, but under Title III, which covers public accommodations, private plaintiffs can only obtain injunctive relief and attorney’s fees. They cannot recover monetary damages in federal court. The Department of Justice can pursue civil penalties.

As of the most recent inflation adjustment in July 2025, DOJ civil penalties for ADA violations by public accommodations reach up to $118,225 for a first violation and up to $236,451 for subsequent violations.⁶ Those figures have climbed from the original statutory caps of $50,000 and $100,000 through annual inflation adjustments. The practical risk extends past fines. ADA accessibility lawsuits have become a growing area of serial litigation, and defending even a weak claim costs real money, with the added exposure of paying the plaintiff’s attorney’s fees on top of your own. Compliance up front is almost always cheaper than a lawsuit after the fact.

1
ADA.gov. 2010 ADA Standards for Accessible Design
2
ADA.gov. Figure 25 – Maneuvering Clearances at Doors
3
U.S. Access Board. Chapter 4 – Entrances, Doors, and Gates
4
U.S. Access Board. Americans with Disabilities Act Accessibility Standards
5
eCFR. 28 CFR 36.304 – Removal of Barriers
6
Federal Register. Civil Monetary Penalties Inflation Adjustments for 2025