Your contractor will then clean up the floor afterward. Your plumber will need to install a drain line, too. Plus, you'll want to make sure you choose a company with a reputation for excellence and a great customer service record. This product integrates the pump and basin together to provide a reliable and simple installation. Install Sump Pump In Existing Basement: The addition of a sump pump to your home is a useful way to prevent flooding and water damage. This will give you enough room to fit the base of the pump and the discharge pipe.