Range from the cheapest installation of a burglar alarm £150 (Future Wiring based in E17) to the dearest installation of a burglar alarm £500 (Boiler Repairs London based in E9).
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 E5 by posting a job with HaMuch and we will send it to electricians in E5.