Welsh Building Regulations — sanitary/access (AD G, AD M; no Part T)

In brief

Building regulations are devolved to Wales, which maintains its own Approved Documents under the SHARED GB Building Regulations 2010 (SI 2010/2214), Schedule 1. Wales amends Schedule 1 via Wales-only SIs. *** Requirement G4 *** (Sch 1 Pt G) requires 'adequate and suitable sanitary conveniences' and 'adequate hand washing facilities', plus separation from food-preparation areas. *** IT DOES NOT MANDATE SEX-SEPARATED PROVISION. *** (G4 wording is high-confidence but NOT independently primary-verified — the gov.wales PDF would not extract cleanly; reconstructed from three mutually-consistent secondary reproductions. RE-PULL FROM legislation.gov.uk BEFORE EXTERNAL USE.) *** THE LOAD-BEARING CLAUSE IS NOT G4 — IT IS WHSWR 1992 reg 20. *** Separate-sex workplace provision is a HEALTH-AND-SAFETY matter, not building control. VERIFIED VERBATIM, reg 20(2)(c): 'separate rooms containing conveniences are provided for men and women EXCEPT WHERE AND SO FAR AS EACH CONVENIENCE IS IN A SEPARATE ROOM THE DOOR OF WHICH IS CAPABLE OF BEING SECURED FROM INSIDE.' Extent confirmed E+W+S — GREAT BRITAIN-wide (NI has separate mirroring instruments). NO PART T EQUIVALENT — CONFIRMED AS AT TODAY, with a live currency watch. Part T was inserted into Sch 1 by an ENGLAND-ONLY amendment (SI 2024/645), in force 1 Oct 2024, full enforcement 1 April 2025. Both Wales amending SIs since — SI 2024/742 (care-home fire suppression) and SI 2025/377 (digital infrastructure) — touch neither G4 nor toilets. *** BUT THIS IS LIVE, CONTESTED TERRITORY, NOT SETTLED: *** a Senedd petition ('Reinstate single-sex toilet provision in educational settings', closed 2 March 2026) and a June 2026 EHRC Code Statement of Opinion (OPIN-2026-0519) are both active. BS 6465 — 'Sanitary installations', FOUR PARTS (1: scale of provision; 2: space requirements; 3: selection/installation/maintenance, current edition 2020; 4: public toilets). A DESIGN CODE, not a legal separation duty. *** Specify WHICH PART — 'BS 6465' undifferentiated is imprecise for a fit-out brief. *** CURRENCY: Welsh AD G is headed '2010 edition incorporating 2010 and 2018 amendments — For use in Wales'; last updated *** 10 May 2023 ***. Materially older than England's current AD G (reissued 'with 2024 amendments'). No 2024-2026 Welsh reissue found.

Key provisions

• • Requirement G4 [framework] Sanitary conveniences and washing facilities (Welsh — • Requirement G4 [framework] Sanitary conveniences and washing facilities (Welsh AD G)
• Requires adequate sanitary conveniences and washing facilities; does not specify — Requires adequate sanitary conveniences and washing facilities; does not specify single-sex separation or numbers (those sit in WHSWR reg 20 / BS 6465).
• Tactical: No Part T equivalent in Wales — the building-reg layer is silent on si — Tactical: No Part T equivalent in Wales — the building-reg layer is silent on single-sex. Distinguish from England, where Part T now requires separate single-sex provision.

When relevant

Advising on toilet/sanitary facilities for buildings in Wales. Wales has no Part T; AD G G4 covers sanitary conveniences but imposes no single-sex mandate. Especially relevant where a client assumes Part T is UK-wide (it is England-only). Keep the three layers distinct: building-reg (this record, Wales) ≠ workplace-welfare (WHSWR reg 20, GB-wide) ≠ equality law (EA 2010 / FWS / EHRC Code).