Range from the cheapest cat flap installation £120 (Wood n work based in E15) to the dearest cat flap installation £320 (Bspec Ltd based in E5).
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 Canary Wharf by posting a job with HaMuch and we will send it to carpenter & joiners in Canary Wharf.