Range from the cheapest basement sump pump installation £135 (Four Seasons based in NW6) to the dearest basement sump pump installation £1650 (Rutherford Plumbing based in NW10).
Comparing plumbers estimates to install a basement sump pump 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 install a basement sump pump in W9 by posting a job with HaMuch and we will send it to plumbers in W9.