Range from the cheapest fitting of a new basin £100 (Mohammad Reza Mohammadi based in EN5) to the dearest fitting of a new basin £340 (Orbit Builders Service based in N12).
Comparing plumbers estimates for fitting a basin (e.g. pedestal basin or countertop basin) 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 new basin in N20 by posting a job with HaMuch and we will send it to plumbers in N20.