There is no single legal number — but BS 7671, NHBC standards and HMO licensing conditions all point to specific minimums by room. Get them wrong on a rental refurb and you're looking at a compliance notice. This guide covers the numbers by room, the difference between new build and HMO rules, and why the standard minimums are already out of date for 2026.
Hotel & HMO refurb
Electrics, bathrooms, hotel housekeeping and fire safety from a single supplier. BOMs by room type, UK compliance checklist.
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