Range from the cheapest fitting of a smoke alarm £62.34 (Archer Electrical based in RG21) to the dearest fitting of a smoke alarm £184 (Multi Fuel Heating and Plumbing based in RG6).
Comparing electricians estimates for fitting smoke detectors gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
What to do - Get rates and quotes to fit a fire alarm in RG7 by posting a job with HaMuch and we will send it to electricians in RG7.