Too many questions need to be answered to give an accurate answer. Ranches cost more to build than vertical 2-story or 3-story homes because of roofing, lot size requirements, and perimeter cost. Style of home, ceiling heights, trimwork, flooring, exterior materials, features (i.e. 6 fireplaces or 8 baths), and design, all play a significant part of cost. In addition, local lot ordinances vary from CH to Hinsdale regarding floor/area ratios and setbacks. You will hear numbers ranging from $200 to $250 plus the lot. With smart planning, smart design and proper contractor, those figures can be lower.