I looked through the reference guide for a definition of 'finished,' but I couldn't find one, so I'm hoping someone here can help: I have a CI project that is moving into a space that has existing polished concrete floors. They want to put carpet down on some of the floors and keep some as polished. No changes will be made to the concrete floors. Does the entire floor area count as a 'retained' area, or just the part that will not be covered by carpet at the end of the project?