Range from the cheapest basement sump pump installation £510 (Birdz Property Services based in DA16) to the dearest basement sump pump installation £1200 (Mr S J Reece based in SE7).
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 SE9 by posting a job with HaMuch and we will send it to plumbers in SE9.