Accessibility guide
Approved Document M: Accessible Toilet Requirements Explained
Approved Document M remains central to accessible sanitary provision in buildings other than dwellings. Its current guidance says wheelchair-accessible unisex toilets should always be provided in addition to any wheelchair-accessible accommodation in separate-sex toilet washrooms, and it cross-refers to Approved Document T for additional guidance on ambulant toilet accommodation in England.
At a glance
| Accessible provision is not the same thing as general cubicle provision. |
| Wheelchair-accessible unisex toilets should be provided in addition to accessible accommodation in separate-sex washrooms. |
| Approved Document T adds guidance for ambulant single-sex and ambulant universal toilets. |
| A standard Doc M wheelchair-accessible unisex toilet is around 1500mm x 2200mm, with a 480mm WC seat height and grab rails at approximately 680mm. |
What is Approved Document M?
Approved Document M gives guidance for access to and use of buildings in England. In Volume 2, Section 5 deals with sanitary accommodation in buildings other than dwellings, including wheelchair-accessible unisex toilets, enlarged cubicles and separate-sex washrooms.
How Approved Document M and T work together
The two documents answer different parts of the same buyer question. Approved Document M explains accessible sanitary provision, while Approved Document T sets out the requirement for specific toilet accommodation that facilitates single-sex toilets in buildings other than dwellings and provides guidance on universal toilets, single-sex toilets and two ambulant options.
| Question | Primary source | Best page to link internally |
|---|---|---|
| Do I need a wheelchair-accessible unisex toilet? | Approved Document M | This guide |
| What is a Type C or Type D cubicle? | Approved Document T | Approved Document T explained |
| How many toilets are needed at work? | HSE welfare guidance | Workplace toilet numbers |
Ambulant sanitary accommodation
Approved Document M explains that suitable toilet accommodation for disabled people may take the form of a specially designed cubicle in separate-sex toilet washrooms or a self-contained unisex toilet. It also notes that where ambulant sanitary accommodation is being provided, Approved Document T provides additional guidance on the design considerations of ambulant single-sex toilets and ambulant universal toilet accommodation to meet requirement T1.
Ambulant accessible toilet cubicles are a different, usually smaller provision than a wheelchair-accessible unisex toilet: they are sized for people who can walk but need support, and are fitted with grab rails rather than full wheelchair transfer space. See our Approved Document T guide for the Type B and Type C ambulant cubicle detail.
The key accessible toilet rule
- The current amended guidance states that wheelchair-accessible unisex toilets should always be provided in addition to any wheelchair-accessible accommodation in separate-sex toilet washrooms.
- It also states that wheelchair-accessible unisex toilets should not be used for baby changing.
What that means in practice: an enlarged or accessible cubicle inside a male or female washroom does not remove the need to consider a separate wheelchair-accessible unisex toilet where the guidance requires one.
Standard wheelchair-accessible unisex toilet dimensions (Approved Document M)
A standard Doc M wheelchair-accessible unisex toilet is around 1500mm wide by 2200mm deep, with a 1500mm x 1500mm clear wheelchair turning space, a 480mm WC seat height and grab rails at approximately 680mm above floor level. These are the commonly-cited Doc M / BS 8300-2 reference figures; the official documents and your project designer govern the final layout for any live scheme.
| Element | Typical Doc M figure |
|---|---|
| Room size (standard) | Approx. 1500mm wide x 2200mm deep |
| Clear wheelchair turning space | 1500mm x 1500mm |
| WC seat height (finished floor to seat top) | 480mm |
| WC pan projection from back wall | 750mm |
| WC centreline from adjacent side wall | Approx. 470mm |
| Horizontal grab rails | Approx. 680mm above floor |
| Vertical grab rail | Approx. 800mm |
| Hand-rinse basin rim height | Approx. 720-740mm |
| Larger washbasin rim height | Approx. 780-800mm |
| Emergency alarm pull cord | Reachable to within approx. 100mm of the floor |
| Door | Outward-opening, with clear effective width and manoeuvring space to Doc M / BS 8300-2 |
What is in a Doc M pack?
A Doc M pack is a coordinated set of accessible sanitary fittings for a wheelchair-accessible unisex toilet. It typically includes the WC pan and cistern, a hinged or drop-down support rail, fixed grab rails, a back rest, a basin with a lever tap, an angled mirror, and often a colour-contrasted toilet seat and rails.
Contrast between fittings, walls and floor helps visibility for people with a visual impairment, which is why Doc M packs are commonly supplied in colour-contrast options such as blue, grey or white against the surrounding finish.
Frequently Asked Questions
Do I need a wheelchair-accessible unisex toilet as well as an accessible cubicle?
Approved Document M says wheelchair-accessible unisex toilets should always be provided in addition to any wheelchair-accessible accommodation in separate-sex toilet washrooms.
Can a wheelchair-accessible unisex toilet be used for baby changing?
The guidance says it should not be used for baby changing.
What size is a Doc M accessible toilet?
Around 1500mm x 2200mm as standard, with a 1500mm x 1500mm clear wheelchair turning space (see the dimensions table above). Figures are the commonly-cited Doc M / BS 8300-2 reference; confirm final layout against the current official documents.
Where do ambulant toilet cubicles fit in?
Approved Document M recognises enlarged cubicles and accessible provision in separate-sex washrooms. Ambulant cubicles are smaller than a wheelchair-accessible unisex toilet and are fitted with grab rails for users who can walk but need support – see our Approved Document T guide for the Type B and Type C ambulant detail.
Does this only matter for public buildings?
It applies to buildings other than dwellings covered by the building regulations in England, so it is relevant to many offices, retail, leisure and other non-domestic projects.
Related Guides
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