What is a disadvantage of the CM at Risk method?

The disadvantage of the Construction Manager at Risk (CM at Risk) method that aligns with the answer pertains to the early signing of the Guaranteed Maximum Price (GMP). When the GMP is established early in the project, it can limit the flexibility to make changes or adjustments as the project progresses. This is particularly important in construction projects where unforeseen conditions can arise or design modifications may be necessary after the GMP is set. Although having a GMP can protect the owner from cost overruns, it also means that the scope of work is relatively fixed at that point, making it challenging to accommodate new considerations without potentially incurring additional costs or complications. This can lead to a constrained decision-making process during the development of the project.

In contrast, the other options do not accurately reflect disadvantages of the CM at Risk method. The assertion that it has a fixed timeline that cannot change is misleading, as timelines can be adjusted under certain conditions. The idea that construction must be delayed until the GMP is signed does not take into account that pre-construction services may occur simultaneously. Lastly, claiming that only one method of procurement is allowed contradicts the nature of CM at Risk, where various procurement methods can be employed.