Who can certify to the owner that a percentage of work has been completed for progress payments?

The managing architect is typically responsible for certifying to the owner that a certain percentage of work has been completed for progress payments. This role involves overseeing the construction project and ensuring that it meets design specifications and contractual agreements. The managing architect reviews the work completed, assesses its quality and adherence to the project timeline, and then provides a certification that states how much of the work is finished. This certification is crucial for the financial management of the project, as it allows for timely payment to the contractor based on the work completed.

In contrast, subcontractors may provide details about their specific portions of work, but they do not have the authority to certify overall project progress to the owner. Suppliers, while essential for providing materials, do not assess completed work on-site and cannot certify work completion. The contractor may have insight into the project's progress but typically does not have the impartiality required for certification purposes; thus, the managing architect fills this vital role in ensuring accurate communication and accountability between contractors and project owners.