Building regulations knowledge base

PART T · Toilet accommodation

Single sex and universal toilets explained

Part T distinguishes single-sex toilet accommodation from universal toilets. A universal toilet is a fully enclosed, self-contained facility for use by either sex. The distinction concerns the complete room and facilities, not simply the wording on the door.

What is the main requirement

Relevant buildings need reasonable provision of male and female single-sex toilets, or universal toilets where space precludes that provision. Universal facilities can also be additional to the single-sex provision.

The space exception needs a justified assessment. It should not be treated as an automatic choice to avoid single-sex provision in any layout.

Does a shared handwashing area work

A cubicle connected to a shared wash area should not be assumed to satisfy the definition of a self-contained universal toilet. Check the required enclosure, washing and drying arrangements.

For example, adding a lock and an all-user sign to an ordinary cubicle does not necessarily change the wider arrangement into the specified facility.

Is a universal toilet necessarily accessible

No. Part M accessibility needs its own assessment. The Part T guidance identifies different forms of accommodation, including ambulant arrangements, while wheelchair-accessible facilities are addressed through the relevant Part M guidance.

The final design should explain which function each room serves and how the overall provision meets the applicable requirements.

What should the designer show

Show the room type, finished dimensions, enclosure, fittings, door arrangement and signage. Check the applicable building category and any exclusions before committing to the layout.

What should be checked on site

Review the completed rooms, not just the initial drawing. Boxing, equipment and door swings can reduce usable space. Ventilation and drainage also need coordinated provision.

Before opening the premises, retain the agreed layout and make sure operators understand the intended use of each facility. A change in signage should not be used to disguise an unresolved design issue.

This guide provides general information about building regulations in England. Requirements, amendments and transitional arrangements can depend on the project and its dates. Confirm the applicable requirements with your designer and building control body.

Official sources