Range from the cheapest fitting of a smoke alarm £50 (Barry Chadwick Electrical Contractor based in ST17) to the dearest fitting of a smoke alarm £66 (Abode Automation based in ST20).
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 ST15 by posting a job with HaMuch and we will send it to electricians in ST15.