Having a swimming pool in house is not an issue but its maintenance is a great issue. The average cost of a 19' diameter above ground swimming pool is $6,243; while the average cost of a 32'x16' inground swimming pool is $21,919. A swimming pool needs its maintenance atleast once in a week. The cost of Swimming Pool Maintenance is usually minimal. The time it takes to take care of a pool is more of the issue; especially if it isn't screened and you have a lot of trees. You can get decent service for about $50 a month or self maintain for less.