Smoke alarm rules for rented property
At least one smoke alarm is required on every storey used as living accommodation.
6 min read · Updated 27 August 2026
Overview
The Smoke and Carbon Monoxide Alarm (England) Regulations 2015, as amended in 2022, require at least one smoke alarm on every storey of a rented property used as living accommodation. Alarms must be tested and confirmed working on the day the tenancy starts, and repaired or replaced when a tenant reports a fault.
Why it matters
Local authorities can serve a remedial notice and impose a penalty of up to £5,000. Beyond the fine, a fire in a property without working alarms is an insurance and liability catastrophe.
Legal requirements
- One smoke alarm on each storey used as living accommodation.
- Alarms tested and working at the start of every new tenancy, with evidence recorded.
- Repair or replace a faulty alarm as soon as reasonably practicable after being told.
- HMOs and licensed properties may face stricter, licence-specific fire detection conditions.
Common mistakes
- Fitting alarms but never evidencing the day-one test.
- Ignoring a reported fault because the tenant removed the battery.
- Treating a loft or cellar in use as living space as exempt.
- Using 9-volt battery alarms where a licence requires mains-interlinked detection.
Practical guidance
- Photograph each alarm with the test date and file it with the inventory.
- Fit sealed 10-year lithium alarms to remove battery disputes.
- Check alarm coverage at every routine inspection and log the result.
- In Scotland, interlinked alarms in the living room, every circulation space and the kitchen are mandatory.
Frequently asked questions
How many smoke alarms do I need?
At least one on every storey used as living accommodation, tested and working on the first day of the tenancy.
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This guide is general information for UK landlords and letting agents, not legal advice. Rules differ across England, Wales, Scotland and Northern Ireland, so check your local requirements or take advice before acting.