What information does a contractor need to estimate or bid a contract effectively?

For a contractor to estimate or bid a contract effectively, having plans, elevations, or specifications is essential. These documents provide detailed information about the project scope, dimensions, materials required, and design intent. They ensure the contractor understands the expectations of the project, allowing for a more accurate estimation of costs and timelines.

Relying solely on the total cost of materials would not account for labor, overhead, and other expenses that are critical in estimating the full project cost. Verbal instructions from the client might lack the specificity needed to create a detailed estimate, as these instructions can be open to interpretation and may miss important aspects of the project. Previous project experience can be valuable for informing practices and methods, but it does not provide the concrete details needed for that specific project’s bid. Thus, comprehensive documentation such as plans and specifications is fundamental for accurate and effective bidding.