Range from the cheapest installation of smart lighting £96 (Find An Expert based in W1H) to the dearest installation of smart lighting £154 (LUCO - London Utility Company based in W1W).
Comparing electricians estimates for upgrading to smart lighting 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 smart lighting in Westminster by posting a job with HaMuch and we will send it to electricians in Westminster.