What Accessible Door Width Do I Need?

Clear Width Requirements (Part M)

• New dwelling entrance: 775mm minimum effective clear width
• New dwelling internal: 750mm minimum effective clear width
• Existing building (reasonable provision): 750mm minimum
• Non-domestic buildings: 800mm minimum effective clear width
• BS 8300 (best practice): 850mm for unassisted wheelchair users

Door Leaf Size vs Clear Width

The effective clear width is measured from the face of the door stop to the leading edge of the door, opened to 90°. A standard 838mm (2’9") door gives approximately 775–795mm clear width depending on frame and ironmongery.

• 726mm door leaf: ~685mm clear width — too narrow
• 838mm door leaf: ~775mm clear width — minimum compliant
• 926mm door leaf: ~860mm clear width — comfortable

Approach Space

• Pull side of door: 300mm clear space beside the leading edge
• Push side of door: Minimum approach space depends on corridor width
• Level threshold: Max 15mm upstand, preferably 0mm

Door Hardware

• Handle height: 800–1,050mm from floor level
• Lever handles: Required (not knobs) for accessible compliance
• Door closer: Maximum opening force 30N, closing force 20N
• Vision panel: Zone of visibility 500–1,500mm from floor

Important Note

These are general guidelines based on Approved Document M. Always consult Building Control for specific projects. Lifetime Homes and Wheelchair Housing Design Guide may require wider openings and additional features.