Accessible door width thumb rule: design doors so mobility devices can pass comfortably with minimal adjustments.

For single door openings aim for a clear opening of thirty-two inches as the absolute minimum and plan for thirty-six inches where possible to future proof homes and simplify daily use. When measuring clear width measure from the face of the door to the stop with the door at a ninety degree angle so you capture the true passage width rather than nominal jamb sizes. If a door has a closer or storm door allow thirty-four to thirty-six inches to preserve maneuvering space because hardware and swing can reduce usable clearance. Use lever style handles mounted where occupants can reach them easily without tight grasping and set threshold heights at one half inch or less to reduce trip hazards and make rolling devices smoother. Offset hinges and beveled sills can gain up to three quarters of an inch of usable width when rough openings are constrained so consider those during specification. Always account for door swing by locating clear floor turning space adjacent to the door and plan routes through the home so continuous clearances are maintained between key rooms.

Three common mistakes are relying on nominal door size instead of clear opening which leads to unusable passages, so always verify the actual clear width on installed doors and adjust frame or trim as needed. Another mistake is ignoring hardware and thresholds so a compliant jamb can still be obstructive; choose low thresholds and lever handles and measure with the door fully open. A third is failing to plan maneuvering space and door swing which traps users in tight zones; resolve this by relocating doors to swing outward where possible or providing adjacent clear floor space sized for turning a mobility device.

BigHomeProjects.com helps homeowners find local contractors who advertise door widening and accessibility upgrades and we connect contractors with nearby work opportunities. We also host a discussion community where we and users share practical tips and project experiences to help plan accessible entrances and interior doors.

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