Range from the cheapest installation of a burglar alarm £170 (Carpencom Ltd based in EN11) to the dearest installation of a burglar alarm £400 (Mariusz Budzynski based in CM18).
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 CM19 by posting a job with HaMuch and we will send it to electricians in CM19.