Range from the cheapest fitting of a smoke alarm £54 (Greg Watkin based in CB25) to the dearest fitting of a smoke alarm £94 (Professional People based in CB9).
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 CB8 by posting a job with HaMuch and we will send it to electricians in CB8.