Range from the cheapest fitting of a smoke alarm £44 (JSC Electrical based in HP9) to the dearest fitting of a smoke alarm £134 (AJP Electrics Ltd based in HP5).
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 HP15 by posting a job with HaMuch and we will send it to electricians in HP15.