• About
• Fees

Contact Us

About Residential/Commercial Structures

"Closed construction" is a factory-built house, commercial structure, or component that is not open for visible inspection at the building site. It may enclose factory-installed structural, mechanical, electrical, plumbing, or other systems and equipment.

"Commercial structure" is a structure designed or used for human habitation (such as a dormitory) or human occupancy for industrial, educational, assembly, professional, or commercial purposes. It may also include a component.

"Factory-built housing" is housing designed for human occupancy such as a single-family dwelling. The structure of any room is entirely or substantially prefabricated or assembled at a place other than a building site. It may also include a component. A factory-built house is also referred to as a "modular" structure. Factory-built housing does not include manufactured (mobile) housing. (See RCW 43.22.450(3)).

NOTE: After occupancy of a factory-built residential/commercial structure, all inspections are done by the local enforcement agency.