Why is it essential to revise initial cost estimates when design changes occur?

Revising initial cost estimates when design changes occur is primarily essential to ensure accurate bid submissions. When a project undergoes design modifications, the quantities, materials, and methods of construction can change significantly, leading to alterations in the overall cost structure. An accurate understanding of these new requirements is crucial for creating a reliable bid. Contractors rely on precise cost estimates to determine their offer, ensuring that their proposals are competitive yet reflective of the true costs likely to be incurred. This accuracy helps mitigate the risk of financial loss for contractors and aids owners in budgeting effectively.

While maintaining project timelines, improving stakeholder satisfaction, and preventing legal issues are also important aspects of project management, they are secondary to the necessity of having accurate bid submissions. Without revised estimates, bids may not align with the actual cost of the project, which can lead to financial discrepancies and ultimately jeopardize the project's feasibility and success.