Domestic smoke alarms
Mains-powered protection for homes and rentals
We design and install interlinked smoke and heat alarm systems for houses, flats, HMOs and rental portfolios — meeting BS 5839-6 and council licensing conditions.
- Fully trained engineers
- 24-hour rapid callout
- Trusted by councils and businesses
What's included
For homeowners, landlords and licensing
- Interlinked mains-powered smoke and heat alarms
- Grade D systems designed to BS 5839-6
- HMO and selective licensing compliance support
- Landlord certificates and installation records
- Upgrades from battery-only alarms
- Alarm systems for extensions and loft conversions
- Periodic testing and battery backup replacement
- Advice on LD1, LD2 and LD3 coverage categories
In the home
Reliable protection throughout the property
Correctly specified alarms help protect occupants while supporting landlords and responsible persons with their safety obligations.
Our process
How we work
Assess
We review your property layout and — for landlords — the licensing conditions your council has set.
Specify
We recommend the right grade and coverage category, positioned for proper escape-route protection.
Install
Alarms are installed, interlinked and tested, with certification for your records or licence application.
Maintain
We can test periodically and replace backup batteries, keeping the system dependable for years.
Meeting licensing conditions, first time
London councils set specific alarm requirements for HMOs and rented homes. We design to BS 5839-6 and the licensing officer's conditions, and provide the certificates that support your application.
- BS 5839-6 Grade D systems
- HMO licensing support
- Landlord certification
FAQs
Common questions
What alarms do I need for an HMO licence?
Requirements vary by council, but most specify interlinked mains-powered alarms to a defined BS 5839-6 grade and category. Send us your licence conditions and we'll design to them.
Can you replace battery alarms with mains-powered ones?
Yes — this is one of our most common jobs. Mains alarms with battery backup are more reliable and are what most licensing schemes expect.
Do tenants need to do anything?
We recommend simple test guidance for occupants, and for managed portfolios we can schedule periodic testing on the landlord's behalf.
Keep exploring
Related services
Talk to an engineer
Need alarms for a licence application?
Send us your council's licensing conditions and we'll come back with a compliant design and quotation.