Because of the type of work we do, we run into things that we know can come back to haunt you as a home owner. If you are considering finishing off the basement, which is great because of the extra space you will have, there will be one thing that you will not want to do. Please, do not build something above your sump pit. If you do you will lose access to it. If the pump needs to be replaced it will make it very difficult to get to. I always recommend to build a closet around it. That way you will have access to the pit, pump and piping should anything need to be worked on. If you do build a cabinet around it make the lid low enough so you can work on the pit while you are on your knees. We have been to plenty of houses where the customer ended up tearing the cabinet apart to change out a pump during a storm because the were not able to work in the space they had created.