Range from the cheapest installation of a burglar alarm £150 (Sam Autos based in N19) to the dearest installation of a burglar alarm £450 (Total Re-Wires based in NW8).
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 NW5 by posting a job with HaMuch and we will send it to electricians in NW5.