The Pros and Cons of Having a Fire Alarm System in the UK – A Landlord & HMO Owner’s Guide for Wales

Updated for 2022–2025 regulations

Fire Alarms – A Legal Requirement, Not a Choice

Fire safety is a legal responsibility for landlords across the UK. For rented homes and particularly HMOs, a certified fire alarm system is required under current legislation.

Regulations for England and Wales

England

• Smoke and Carbon Monoxide Alarm (Amendment) Regulations 2022 require at least one smoke alarm on each floor of a rented property.
• Carbon monoxide alarms are required in rooms with fixed combustion appliances.
• Landlords must ensure alarms work at the start of each tenancy. Penalties up to £5,000.

Wales

• Since 1 December 2022 (Renting Homes (Wales) Act 2016), rented properties must have mains-wired, interlinked smoke alarms with backup batteries.
• Heat alarm in the kitchen is required.
• HMOs should meet BS 5839-6:2019+A1:2020, typically LD2 or LD1 categories.

Benefits

• Life safety and early detection.
• Compliance with BS 5839 and protection from fines/liability.
• Trust & value for tenants; stronger reputation.
• Integration with CCTV, access control, remote monitoring.
• Potentially lower insurance premiums.

Challenges

• Installation & ongoing maintenance costs (especially HMOs).
• False alarms if poorly designed—use competent installers.
• Need for regular testing (at least every 6 months) and documentation.
• Legal exposure without proof of compliance.

HMO Requirements

HMOs face stricter standards: BS 5839-6 LD2/LD1 coverage (bedrooms & common areas), central control, and routine testing by competent engineers.

Disclaimer: This guide is for general information only and does not constitute legal advice. Always check the latest regulations and your local authority/HMO licence conditions.