Range from the cheapest fitting of a smoke alarm £42 (BEALS T/A Brown Electrical & Lighting Se based in SE23) to the dearest fitting of a smoke alarm £144 (A A A based in SE7).
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 SE10 by posting a job with HaMuch and we will send it to electricians in SE10.