An in-ground swimming pool can be a beautiful addition to any backyard. If youre considering having a in-ground pool installed you should think about all the expenses that can happen with this process before diving in in a pool project. In this document we have taken a cost averaging approach to give you an understanding of the costs involved with a pool installation project. The total cost of a swimming pool can vary from state to state and each contractor will have different expenses. This post is to be used as a basic guide for understanding the fess involved with a pool project.