EZUD Accessible Home Design: Doorways, Bathrooms, and Kitchens
Accessible Home Design: Doorways, Bathrooms, and Kitchens
An accessible home starts with three areas that determine whether someone can move through, use, and live in a space independently: doorways, bathrooms, and kitchens. Getting these right benefits wheelchair users, older adults, parents with strollers, people recovering from surgery, and anyone who will eventually experience a change in mobility.
This guide covers the dimensional standards, material choices, and design strategies that make each of these zones work for the widest range of people.
Accessibility requirements vary by jurisdiction and building type. Consult local codes and a licensed professional before making structural changes.
Doorways
Doorways are the first barrier most people encounter in an inaccessible home. A standard interior door opening of 28 to 30 inches does not allow a wheelchair or walker to pass through comfortably.
Minimum Clear Width
The ADA Standards for Accessible Design and ICC A117.1 require a minimum clear opening of 32 inches when the door is open at 90 degrees. For new construction following universal design principles, a 36-inch door (providing approximately 34 inches of clear width) is the recommended minimum.
Hardware
Replace round doorknobs with lever handles. Lever handles can be operated with a closed fist, an elbow, or a single finger, meeting the ADA requirement that operable hardware not require tight grasping, pinching, or twisting of the wrist.
Thresholds
Thresholds should be no higher than 1/2 inch for exterior doors and 1/4 inch for interior transitions. Beveled edges on thresholds reduce tripping hazards and allow smoother wheelchair passage.
Swing and Alternatives
Standard hinged doors consume floor space when they swing open. Consider:
- Offset hinges that add approximately 2 inches of clear width without changing the door or frame
- Barn-style sliding doors that eliminate the swing entirely
- Pocket doors that slide into the wall, freeing all adjacent floor space
- Automatic door openers activated by push plates, motion sensors, or smart-home controls
Bathrooms
The bathroom is the most common location for falls and the room most frequently cited as a barrier to independent living.
Floor Space
A universally designed bathroom provides a 60-inch turning radius, which allows a wheelchair to make a full rotation. In smaller bathrooms, a T-shaped turning space (60 inches by 60 inches with a 36-inch arm) is an accepted alternative under ICC A117.1.
Shower
A curbless (roll-in) shower is the gold standard. The ADA specifies two compliant shower sizes: a 36-by-36-inch transfer shower and a 30-by-60-inch roll-in shower. Include a fold-down shower seat, a handheld showerhead on an adjustable slide bar, and anti-scald (thermostatic) mixing valves.
Toilet
Mount the toilet so the seat height is between 17 and 19 inches (comfort height). Provide at least 18 inches of clear space from the centerline of the toilet to the nearest side wall, and a minimum of 48 inches of clear floor space in front. Reinforce walls on both sides of the toilet for future grab bar installation, even if bars are not installed immediately.
Vanity and Sink
A wall-mounted sink or a vanity with knee clearance underneath (at least 27 inches high, 30 inches wide, and 19 inches deep) allows seated users to wash their hands comfortably. Insulate exposed pipes to prevent burns.
Grab Bars
Install grab bars at the toilet (42 inches on the side wall, 36 inches on the rear wall) and in the shower (horizontal and vertical bars). Modern grab bars are available in decorative finishes that blend with any bathroom style, removing the institutional look that once discouraged homeowners from installing them.
Kitchens
The kitchen involves the most complex series of tasks in daily living: reaching, bending, carrying, pouring, and using heat. Universal design addresses each of these.
Counter Heights
A single counter height does not serve everyone. Include at least one section of counter at 30 to 34 inches for seated users, alongside the standard 36-inch height. Pull-out cutting boards and work surfaces that can be mounted at adjustable heights add flexibility.
Cabinets and Storage
Upper cabinets above 48 inches are unreachable for many seated users and shorter adults. Compensate with:
- Pull-down shelving systems in upper cabinets
- Drawer-based lower cabinets instead of deep shelves
- Lazy Susans and pull-out organizers in corner cabinets
- Open shelving for frequently used items between 15 and 48 inches above the floor
Appliances
Choose appliances with front-mounted or side-mounted controls. Side-opening ovens and wall ovens mounted at counter height eliminate the need to reach over a hot open door. Drawer-style dishwashers and refrigerators with bottom-mounted freezers reduce bending.
Sink
Provide knee clearance under the kitchen sink (same dimensions as the bathroom vanity). A shallow-bowl sink (6.5 inches deep instead of the standard 8 to 10 inches) preserves knee space. Single-lever or touchless faucets with pull-out spray heads simplify operation.
Floor Space
Maintain at least 40 inches of clear floor space between facing counters (48 inches is preferred). A U-shaped or L-shaped kitchen layout naturally provides good circulation. Avoid placing the primary work triangle (sink, stove, refrigerator) where it crosses a major traffic path.
Practical Tips for Existing Homes
Not every home can be gutted and rebuilt. Many improvements are affordable and minimally invasive:
- Swap doorknobs for lever handles in an afternoon
- Add offset hinges to widen existing doorways by 2 inches without reframing
- Install a comfort-height toilet as a direct replacement
- Add a handheld showerhead on a slide bar to an existing shower
- Mount a fold-down grab bar beside the toilet using blocking behind the drywall
- Replace lower cabinet doors with pull-out drawers using retrofit kits
Key Takeaways
- A 36-inch door with lever hardware is the single most impactful doorway upgrade for accessibility.
- Curbless showers, comfort-height toilets, and reinforced walls for grab bars make bathrooms safer and more usable for everyone.
- Multi-height counters, front-control appliances, and drawer-based storage transform kitchens for seated and standing users alike.
- Many accessibility improvements can be made to existing homes without major renovation.
For a whole-home perspective, see our Universal Design in Buildings and Architecture Guide. For bathroom-specific details, visit Accessible Bathroom Design: Roll-In Showers.
Sources
- 2010 ADA Standards for Accessible Design — U.S. Department of Justice
- ICC A117.1-2017: Accessible and Usable Buildings and Facilities — International Code Council
- Guide to the ADA Standards — U.S. Access Board