Range from the cheapest cat flap installation £100 (Deans Property Maintenance based in NN5) to the dearest cat flap installation £180 (Adams Carpentry based in Mk43).
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 MK46 by posting a job with HaMuch and we will send it to carpenter & joiners in MK46.