Under this delivery method, the construction manager acts as an extension of the Owner’s staff and manages the work of all prime contractors who have direct contracts with the Owner. An agency construction manager typically does not self-perform trade labor work on the project. This is the dominant method for public sector work.
CM At Risk
This method is used most often in the private sector. It combines the responsibilities of the agency construction manager with the financial risk for the construction cost of the project. The construction manager prepares a guaranteed maximum price (GMP) prior to the start of work. In this delivery method, the trade contractors may have direct contracts with the construction manager or the Owner depending on the terms of the Owner/CM agreement.