A construction defect is a flaw or deficiency in a building??s design, the material??s used, quality of the property or the level of skill of the builders. These defects may cost the owner thousands of dollars to repair, cause a decrease in the worth of the structure or, in some cases, makes the structure unsafe. Some defects may be clear to the naked eye, however, some may be hidden and are not discovered until weeks, months or years later.