Smoke, heat and CO alarm installation · Wales
Smoke, heat and CO alarm installation in Wales
Alarm upgrades in Wales are quickest when combined with voids, rewires and planned works. We fit them as a standalone programme or alongside other work.
We take on smoke, heat and carbon monoxide alarm installation for social landlords across Wales: housing associations, councils and supported housing providers in all 22 council areas, to the rules that apply in Wales.
Where in Wales do we carry out smoke, heat and carbon monoxide alarm installation?
We cover every council area in Wales. Choose one to see who owns the social homes there and the local guide price.
- Blaenau Gwent
- Bridgend
- Caerphilly
- Cardiff
- Carmarthenshire
- Ceredigion
- Conwy
- Denbighshire
- Flintshire
- Gwynedd
- Isle of Anglesey
- Merthyr Tydfil
- Monmouthshire
- Neath Port Talbot
- Newport
- Pembrokeshire
- Powys
- Rhondda Cynon Taf
- Swansea
- Torfaen
- Vale of Glamorgan
- Wrexham

What is included?
- Sealed-battery and radio-interlinked options
- Carbon monoxide alarms near fixed combustion appliances
- Alarm upgrades during voids, rewires and planned works
- Replacement of alarms reaching end of life
- Testing and records for your compliance system
Which rules apply in Wales?
Wales has its own Building Regulations, including its own Part P on electrical safety. Notifiable work is certified and notified under the Welsh rules.
What does it cost in Wales?
Our guide range for mains-wired interlinked smoke, heat and CO alarms in Wales is £420–£835 per home. That is the UK range of £450–£900 (our estimate) adjusted by a regional cost factor of 0.93 (VOA Rating Cost Guide 2026: 0.88–0.98); figures are before VAT where the source states it. Every job is priced after survey; specification, access and the condition of the homes will move the figure.
How do we deliver it?
Fitting alarms during a void or a rewire avoids a separate visit, so we flag homes in your other programmes where alarms are due.
Common questions
Which council areas in Wales do you cover for smoke, heat and carbon monoxide alarm installation?
All 22: Blaenau Gwent, Bridgend, Caerphilly, Cardiff, Carmarthenshire, Ceredigion, Conwy, Denbighshire, Flintshire, Gwynedd, Isle of Anglesey, Merthyr Tydfil, Monmouthshire, Neath Port Talbot, Newport, Pembrokeshire, Powys, Rhondda Cynon Taf, Swansea, Torfaen, Vale of Glamorgan, Wrexham.
Should we fit mains-wired alarms?
Many landlords specify mains-wired, interlinked alarms as their standard because they are more reliable than battery-only alarms. We fit whichever you specify.
What is the standard in Scotland?
Since February 2022, every home in Scotland needs interlinked smoke alarms in the living room and every circulation space, a heat alarm in the kitchen and a CO alarm wherever there is a carbon-fuelled appliance or flue.