Alternatively, you can install a battery-powered unit. Having a basement with moisture is no fun, and it can lead to major property damage. This also allows you to get back to the more mundane parts of a basement renovation such as painting, refinishing the floor, and installing a new carpet. Having a sump pump installed can cost hundreds or even thousands of dollars, depending on your location. Here are some ways to do so. You might even want to take a look at the best waterproofing solutions for your property, especially if it has finished furniture or valuables. In general, basements have higher humidity than the outside air. The pit should be at least 22 inches deep.