Chicago costs for House Flipping Spreadsheet

[Steven C.]

Hello, I am midway done through my first gut rehab and flip in Chicago. The costs were super cheap partly because of COVID and partly because most laborers came in as personal favors from a friend.

I recently purchased the House Flippers Spreadsheet to analyze another potential deal. I don’t really have a good idea of what things really cost in order to properly give a detailed estimate and see if the deal is worth it. Is there a Chicago specific directory of average costs for things, like price per sf of replacing existing decking or flat roof replacement cost per sf? Or do I call up a contractor and ask them for each of these prices (there’s a lot)?