Range from the cheapest window sill replacement £240 (A Joinery based in BB3) to the dearest window sill replacement £400 (Joinery T&F PERSONA based in FY4).
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 PR5 by posting a job with HaMuch and we will send it to carpenter & joiners in PR5.