Few items in a project schedule are as important as the date of substantial completion, which is often the trigger date for liquidated damages, reduction in retainage, warranties, and other factors. Most construction contracts follow the definition of substantial completion given in AIA A201 as that stage of progress when the work or designed portion thereof is sufficiently complete in accordance with the contract documents so that the owner can occupy the building or put the work to its intended use. Whether the walk-through to determine substantial completion is made by a third party — typically an architect or engineer — or by the builder and the owner together, the potential for problems is the same. Generally, disputes center around