Range from the cheapest fitting of a smoke alarm £54 (Arkham Services based in EN2) to the dearest fitting of a smoke alarm £104 (Foryou Electrical Ltd based in EN3).
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 EN2 by posting a job with HaMuch and we will send it to electricians in EN2.