I'm sure you are wondering how much something like this structure costs. According to Niel Otto of NO Equal Design Company, a ballpark figure for this freestanding structure, including shade fabric, is around $4,400. Installation costs can vary widely from project to project and state to state, but structures like this one involve digging foundation holes for the poles and pouring concrete footings. After the foundation for the one pictured here was dug, Otto says, it took two men about two hours to install the 13-foot structure and shade sail.Conversely, he says it took him two minutes and the use of a stepladder to take the fabric down. While most structures can withstand 90-mile-per-hour winds, you will want to remove the sails for hurricanes, as well as during snow and ice season. Homeowners can take them down and put them back up themselves as needed.