Range from the cheapest installation of a burglar alarm £180 (Jay Property Service based in NW10) to the dearest installation of a burglar alarm £500 (F&A Electrical based in W2).
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 NW6 by posting a job with HaMuch and we will send it to electricians in NW6.