As-built surveys are usually conducted several times during a construction project. The number of as-built surveys completed depends on the scope and size of the construction project itself. The main purpose of an as built survey is to verify to local state boards that the work is being completed to the specifications set out during the planning and design stages of the project. The as-built survey shows the building inspector that the project is conforming to all zoning regulations and requirements. As-built surveys can be required for almost every type of land project from road construction to residential and commercial construction.