Range from the cheapest window sill replacement £410 (SL Carpentry based in SO50) to the dearest window sill replacement £434 (Fraser Carpentry & Construction based in So51).
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 SO23 by posting a job with HaMuch and we will send it to carpenter & joiners in SO23.