Pool Cost Guide-The Basics Understanding the pool building process is key to know where you want to spend your money, what upgrades or downgrades are right for you, and why pools cost what they cost. Consider all labor factors. If you’ve chosen a curvy or large pool, keep in mind your pool bid may be more money so plan for that. If you are trying to save money stick with a rectangular pool. Tip: Rectangular pools have benefits of automatic seem-less pool covers and generally depending on size are cheaper to install.