Range from the cheapest cat flap installation £72 (TTM Improve Homes based in UB5) to the dearest cat flap installation £240 (Creative Carpenters based in HA2).
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 Perivale by posting a job with HaMuch and we will send it to carpenter & joiners in Perivale.