Range from the cheapest cat flap installation £80 (Paul Fitzgerald based in NW2) to the dearest cat flap installation £200 (KTJ Hughes based in NW6).
Comparing carpenter and 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 Golders Green by posting a job with HaMuch and we will send it to carpenter and joiners in Golders Green.

"Install a cat flap in a upvc door that leads onto a balcony in a first floor flat "
N2
"Install a cat flap"
N2