Range from the cheapest installation of smart lighting £40 (May Electrical based in S20) to the dearest installation of smart lighting £114 (Robix Electrix based in S60).
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 S13 by posting a job with HaMuch and we will send it to electricians in S13.