As-Built construction is anything that has been built or remodeled to an existing home without a building permit.
As-Built construction can be home additions, closing in a carport, building a detached structure, remodeling exterior siding, replacing exterior windows and doors, just to name a few.
Quite often, this type of construction is found when a property is bought or sold. It is also found by someone seeing the construction and code enforcement is informed. As a retired residential contractor we have the information and the design services for this type of construction drawings.