You may also need to pay for a permit if you are installing a sump pump outside. To ensure your drainage is effective, the best option is to have it installed when you build your house. The materials you need will vary based on the location of your pump. The P372LE51 sewage ejector package from Liberty Pumps is designed for both residential and light commercial applications. Be careful not to overtighten the fitting. Ridgid Sump Pump Installation: The Ridgid one HP Stainless Steel Dual Suction Sump Pump is a great choice for your home's basement. It depends on the region, the size of your crawl space, and the type of sump pump. Depending on your local labor rates, the cost of a sump pump and French drain can range from $500 to $18,000. The cost of installing a sump pump can vary significantly. If you are looking to install a new sump pump, check with your local sump pump company for recommendations. It is important to have it replaced regularly. This will give you enough room to fit the base of the pump and the discharge pipe.