Range from the cheapest window sill replacement £400 (We are flooring based in CM3) to the dearest window sill replacement £600 (Solution building contractors LTD based in SS4).
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 CM3 by posting a job with HaMuch and we will send it to carpenter & joiners in CM3.