Range from the cheapest fitting of a smoke alarm £44 (Phase Electrics based in WR4) to the dearest fitting of a smoke alarm £162 (247 Electric based in dy10).
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 WR9 by posting a job with HaMuch and we will send it to electricians in WR9.