Range from the cheapest cat flap installation £112 (BMG CARPENTRY based in HA0) to the dearest cat flap installation £200 (Afshin Arasp based in NW10).
Comparing carpenter & joiners estimates for installing a cat flap 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 fit a cat flap in W5 by posting a job with HaMuch and we will send it to carpenter & joiners in W5.