The cost to build a pool can depend on factors like whether it’s above-ground or in-ground, the size and type of deck, the cover or enclosure, maintenance, and repairs. According to HomeAdvisor, the cost to build a pool can range from $19,679 to $50,000 or more, with the average cost around $34,203. There are ways to make installing a pool more affordable, so talk with the construction company about your options.