This sample letter of extension of time shows you what your extension of time letter should contain and look like in order to keep and share strong records. In the "CO Type" field, Select "Time Extension" from the dropdown list. d.In the "Functions" box, Check "Time Adjustment. When an extension of time is refused in a construction project, it can have significant implications for the project schedule, budget, and overall success. Learn the basics of extension of time claims in construction projects, including key considerations and procedures for submitting a claim. This request is more formal than the notice of delay, and the actual procedure to request a time extension should be outlined in the contract. An extension of time (EOT) in a construction contract is a formal request for an additional time period that can make up for delay losses. âś“ Fill out appropriate forms, for livery and hours worked (similar to. Inexcusable, an extension of time is NOT granted. Water crossings, and portable spans, necessary for construction activities, access fill, or dewatering of construction sites.