HMO electrical requirements for landlords and guesthouse owners.

What electrical certificate does an HMO need?

An HMO let as its tenants' homes needs a condition report. The Electrical Safety Standards regulations make the landlord have the installation inspected and tested by a qualified person every 5 years at most, or earlier if the most recent report says so.

Rooms let on licences are caught as well, because the rules count a licence to occupy as a tenancy. A lodger who shares a kitchen or a bathroom with you or your family is the exception.

Every tenant gets a copy of the report, and the council can ask for one. If the report finds work is needed, it has to be done within 28 days, or sooner where the report sets a shorter deadline.

The HMO management regulations used to have an electrical inspection rule of their own, which went when these standards came in.

Getting into every room

Every let room has sockets and lighting on the circuits being tested, so give the tenants notice of the date and sort out the keys before the day.

If a tenant won't let anyone in, a landlord who has taken all reasonable steps isn't in breach, and the regulations don't expect a court case to get access.

What an HMO licence adds

Larger HMOs need a council licence, and every licence carries the same safety conditions. One is that each electrical installation is in proper working order and safe for continued use, with a declaration to the council when it asks for one.

The conditions also require a smoke alarm on each storey with living accommodation, kept in working order, and a carbon monoxide alarm in any room with a fixed combustion appliance other than a gas cooker.

Some councils license smaller HMOs too, through additional or selective licensing schemes.

Do HMOs need AFDDs?

For new work, yes. BS 7671 requires arc fault detection devices on the socket circuits of HMOs and recommends them elsewhere. The rule came in with the 2022 amendment and stays in the current edition, BS 7671:2018+A4:2026.

An AFDD watches for the electrical signature of arcing, the sparking you get at a loose terminal or a damaged cable, which an ordinary circuit breaker or RCD is not built to detect.

An HMO wired before then isn't unsafe just because it has none. BS 7671 says an older installation can fall short of the current edition without being unsafe, and the condition report judges it on safety.

When I put new socket circuits or a new board into an HMO, the AFDDs go in the quote.

Fire alarms in shared houses

The alarm system an HMO needs depends on its size and how the rooms are let. Councils work from national housing fire safety guidance and BS 5839-6, and a small shared house is usually expected to have interlinked mains smoke alarms, with a heat alarm in the kitchen.

Taller houses and bedsit-style HMOs step up to more detection, and the largest to a panel system with call points. A panel system needs servicing through the year. I can carry out the once-a-year inspection, and any other servicing it needs is quoted separately.

Smoke and heat alarms linked to each other are what I fit in smaller houses, and the standard job has its own from price.

Guesthouses and B&Bs

Fire safety law covers a guesthouse, and the duties sit with the responsible person, usually the owner or whoever runs the place.

The Home Office guide for small guesthouses and B&Bs says the fixed wiring should have an inspection and test at least once every 5 years, by a qualified electrical contractor.

That guide also asks for linked smoke and heat alarms in every area where a fire might start, mains powered with a battery standby, and emergency escape lighting on hallways and stairs. In the very smallest premises, rechargeable torches that come on by themselves can be enough.

Bigger guesthouses come under the government's wider guide for sleeping accommodation, which covers caravan holiday parks too.

Emergency lights in a guesthouse need their annual test like anywhere else, and it's a separate job with its own price.

Condition report prices

An HMO's condition report is priced per property, and a guesthouse's is on the home price.