Range from the cheapest window sill replacement £400 (SR Gas and Electricity LTDG Ltd based in KT5) to the dearest window sill replacement £600 (MARK MCEVOY INTERIORS based in TW11).
Comparing carpenter & joiners estimates for replacing a window sill 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 replace a window sill in KT7 by posting a job with HaMuch and we will send it to carpenter & joiners in KT7.