Range from the cheapest installation of a burglar alarm £190 (NJ Light based in TR4) to the dearest installation of a burglar alarm £214 (Hendry Electrical Services based in TR1).
Comparing fire & security specialists 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 TR1 by posting a job with HaMuch and we will send it to fire & security specialists in TR1.