As-built Drawings Washington is primarily used to document any deviation from the original design that was made during construction.
When a building project is finished, it is not necessary to use the initial designs that were created for it. As an alternative, the contractor must provide the as-built plans. These designs represent the revised version, which contains all specification changes, exact measurements, the placement of all components, and any additional work. Record drawings are another name for as-built drawings.
https://www.tnidesign.com/as-built-drawings/