Range from the cheapest fitting of a smoke alarm £44 (Karol Szymanski based in BR5) to the dearest fitting of a smoke alarm £124 (Electri-Call Contractors Limited based in BR6).
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 BR6 by posting a job with HaMuch and we will send it to electricians in BR6.