Part T
Plain English. Practical detail. UK context.
Part T is England's Building Regulations provision on toilet accommodation in buildings other than dwellings, subject to defined exclusions. Approved Document T gives guidance on the relevant toilet types and arrangements. It should not be described as a new rule requiring every domestic bathroom to be redesigned.
Last reviewed: (editorial review against the public sources listed below).
Confirm the building and exclusions
The requirement concerns non-dwelling toilet accommodation within its scope. The document sets out specific exclusions, so a general building label is not enough to determine the answer. Check the actual use and work with the responsible designer or building-control team. Homeowners may encounter it when involved with business premises or relevant mixed-use projects, rather than an ordinary house bathroom. Tradespeople should establish the applicable requirement before ordering cubicles or sanitaryware. The latest official page includes corrections and guidance history; use the applicable version rather than an undated drawing borrowed from another project.
Different toilet types have different layouts
Approved Document T identifies fully enclosed self-contained universal types and single-sex cubicle types, with ambulant variants. The requirement addresses provision of male and female single-sex toilets, universal toilets where space precludes that provision, and permitted additional universal facilities. The exact layout and conditions need reading as a whole. A universal toilet is not automatically a wheelchair-accessible toilet: the document explicitly distinguishes these concepts. Trainees should not treat the word universal as proof that every access need is met or substitute one type without design review.
Coordinate access, sanitation and services
Part M accessibility and Part G sanitation remain relevant alongside Part T. Ventilation, drainage, doors, controls and other interfaces need suitable detail. A fixture that fits physically may still compromise the intended clear space or enclosure. Tradespeople should follow the specified layout and report clashes before installation. Trainees need appropriate plumbing, fixing and service instruction and should not improvise electrical or safety-related work. HSE construction guidance matters during refurbishment, including unknown materials and occupied-premises protection. A completed row of cubicles does not alone demonstrate that every provision or interface has been addressed.
A clear client scope and handover
Agree the applicable type, design responsibility, products, finishes, service connections, checks and making good. Keep relevant drawings and authorised changes. Explain normal operation and maintenance without confusing building requirements with every ongoing management duty. Prices and outcomes vary from job to job, so compare written, itemised quotations rather than relying on a typical figure. Check the correct national framework outside England. Homeowners acting as small-business clients should know why a domestic fitting assumption may not transfer, while tradespeople should obtain complete details before pricing. Avoid a late product substitution that changes clearances or enclosure and makes the finished work differ from the assessed design.
Frequently asked questions
Does Part T govern every ordinary domestic bathroom?
No. Its requirement concerns buildings other than dwellings within its defined scope.
Is a universal toilet automatically wheelchair accessible?
No. Approved Document T distinguishes universal provision from wheelchair accessibility.
Sources and further reading
Public sources and further reading. Sources checked: 8 November 2026. Consult the original for details and later changes.