Range from the cheapest window sill replacement £300 (B H G M Ltd based in CT7) to the dearest window sill replacement £404 (K P S JOINERY & CARPENTRY LTD based in ME13).
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 CT3 by posting a job with HaMuch and we will send it to carpenter & joiners in CT3.