Range from the cheapest cat flap installation £60 (1staardvark based in BS10) to the dearest cat flap installation £140 (ARK BUILDING CONTRACTORS LTD based in BA1).
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 BS37 by posting a job with HaMuch and we will send it to carpenter & joiners in BS37.