How much will it cost to fill a 27-foot swimming pool?

That is really difficult to determine without a full set of plans to set forth the full scope of the work. Costs of materials have gone up greatly within the last year, 40% for some materials. The size, shape and quality of materials will all be important factors in determining price. There is no set rule that you can look too such as $200 per square foot. The best thing to do is to get estimates from qualified contractors.