Range from the cheapest basement sump pump installation £30 (Ghani Constructions based in IG1) to the dearest basement sump pump installation £1200 (Golden Hands Handyman based in E7).
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 E7 by posting a job with HaMuch and we will send it to plumbers in E7.