The best application of a cost plus contract is when the scope of the project or contract is not clear including the costs, e.g. during renovations or when facing a custom build. It details how a cost plus contract provides flexibility in which it can be changed over the course of the work. It can also start a project quicker since there is no need to wait until the budget is final. It is only suggested to be used with reputable contractors by the blog and that cost should be constantly monitored. In a complex project where there are potential unknowns involved, this kind of contract can, in fact, act to mitigate the risk provided the contract is handled correctly.