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Internal Disability Doors

Part M Compliant also known as Disability Doors is a regulation in place which requires doors to have a minimum opening space requirement to allow 

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wheelchair access into a building or property. 

Please note this section refers to doors 838mm or wider only, anything smaller than this may not comply with regulations but please read more should you need more information.


The Equality Act (EA) 2010 incorporated (and repealed) the Disability Discrimination Act (DDA). (The EA, therefore, renders the term ‘DDA compliant’ obsolete.) The EA carries forward the protection provided for disabled people by the DDA, but its application is considerably wider. It covers services in the commercial, retail, financial, residential, education, healthcare and transport sectors.

As the EA relates to access to services rather than to premises, buildings and products cannot be ‘EA compliant’. Instead, they must comply with either Part M of the Building Regulations (Access to and use of buildings) or the recognised technical standard BS 8300: (Design of buildings and their approaches to meet the needs of disabled people: Code of Practice). However, it is incorrect to assume compliance with Part M alone will meet the requirements of the EA. Also, it should be noted that the requirements of Part M and BS 8300 are ‘minimum standards’. Part M is sometimes referred to as ADM (Approved Document M).

Part M or ADM – Main Requirements for Doors;

FAQ's, frequently asked questions regarding doors and Part M concern, minimum (ECW) effective clear opening widths.

Direction & width of approach New Buildings (mm) Existing Buildings (mm)
Straight-on (without a turn) 800 750
At right angles to an access route at least 1500mm wide 800 750
At right angles to an access route at least 1200mm wide 825 775
External doors to buildings used By the general public 1000 775

Note: The ECW is the width of the opening, measured at right angles to the wall in which the door is situated from the outside of the door stop on the closing side to any obstruction on the hinge side e.g projecting door furniture, the door or the door stop.

minimum effective clear opening widths for doors

Source: Approved Document M – Access to and Use of Buildings

This information has been extracted in part or full from HM Government Planning Portal and as you would expect from such a facility there is much more information to be gathered.

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