Range from the cheapest installation of smart lighting £34 (Colin Gordon's Electrical Service based in SY8) to the dearest installation of smart lighting £134 (SBF Services based in WR3).
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 HR7 by posting a job with HaMuch and we will send it to electricians in HR7.