Range from the cheapest cat flap installation £72 (Liverpool Direct Builders based in L14) to the dearest cat flap installation £160 (Altea Property Repairs based in L22).
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 Thorn by posting a job with HaMuch and we will send it to carpenter & joiners in Thorn.