Range from the cheapest fitting of a smoke alarm £44 (Eyes4usecurity based in Ha0) to the dearest fitting of a smoke alarm £144 (M&E Electrical Contractors Ltd based in UB6).
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 Harrow by posting a job with HaMuch and we will send it to electricians in Harrow.