An in-ground swimming pool can be a fun addition to any backyard. If youre considering having a pool installed you should consider all the expenses that can occur with this process before taking the plunge in a in-ground swimming pool. In this post we have taken a cost averaging methodology to give you an idea of the costs related to a swimming pool purchase. The total cost of a in-ground swimming pool can vary from state to state and each pool company will have different expenses. This information is to be used as a basic guide for understanding the fess involved with a swimming pool installation.