Range from the cheapest fitting of a smoke alarm £54 (Cotswold Connections based in GL5) to the dearest fitting of a smoke alarm £84 (Coles Group Services based in GL10).
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 GL8 by posting a job with HaMuch and we will send it to electricians in GL8.