Before installing your pump, make sure it's level. Some types have a battery backup that can be a lifesaver during a power outage. If you are considering installing a pump, you should first learn more about the pros and cons of a system. In addition to the cost of the sump pump itself, you will also need to purchase a flexi pipe and other plumbing fixtures. These pumps are expensive, but they can be worth it in an emergency. To ensure your drainage is effective, the best option is to have it installed when you build your house. Crawl Space Sump Pump Installation Cost: Installing a sump pump in a crawl space can be a tricky undertaking. You can also opt for a Pro380-SD that features a 24" x 24" side discharge basin. Cost To Install Sump Pump And French Drain: If you're looking for a quick and cost-effective way to prevent standing water in your basement, a sump pump and French drain may be just what you need. You may have to drill a few holes in the floor or walls. The floor of your sump should be made of gravel, which will act as a filtration system. They help keep water away from your basement and crawlspace. If you have a sump pit, it's a good idea to use coarse gravel for the bottom of the pit.