Range from the cheapest cat flap installation £40 (Ghani Constructions based in IG1) to the dearest cat flap installation £200 (P & M Builders based in RM7).
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 IG7 by posting a job with HaMuch and we will send it to carpenter & joiners in IG7.