Range from the cheapest installation of a burglar alarm £200 (SE9 Electrical based in SE9) to the dearest installation of a burglar alarm £800 (Chislehurst Electrical Ltd based in BR7).
Comparing electricians estimates for fitting a burglar alarm 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 install a downstairs toilet in SE9 by posting a job with HaMuch and we will send it to electricians in SE9.