In Guaranteed Maximum Contracts construction expert witness Paul Gogulski explains the the G-Max contract:
The downside also needs stating. G-Max contracts require more work on the owner’s part to administer. The main effort involves defining what is cost. And if you are not interested in collecting discounts, obtaining credits for small tools, establishing realistic labor rates, monitoring rentals, and are not really prepared to act as a partner with your contractor in the project, then this program is not for you. Don’t try this if you don’t have a strong administrator experienced in general contracting. Contractors resent inexperienced owners questioning their decisions, and they certainly aren’t eager to have their books audited by anyone they don’t trust. Properly set-up and administered however, G-Max contracts are a win-win situation.”