Range from the cheapest cat flap installation £60 (A C Woods Carpentry based in SA10) to the dearest cat flap installation £116 (Oasis Garden Services based in CF32).
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 SA7 by posting a job with HaMuch and we will send it to carpenter & joiners in SA7.