The answer to 'cost to replace flat roof in Chicago' is that the cost to replace a flat roof can vary significantly depending on several factors. Typical ranges for a professional flat roof replacement in the Chicago area are generally between $10,000 to $30,000, with most projects falling in the $15,000 to $25,000 range.
The key factors that influence the cost include the size of the roof, the materials used (e.g. EPDM, TPO, or modified bitumen), the complexity of the roof design, the accessibility of the building, and the experience and labor rates of the roofing contractor. Older homes or buildings with complex roof layouts tend to be on the higher end of the cost spectrum. Getting multiple local quotes is essential to understanding the specific cost for your home or building.