How Factory-Built Homes Are Made

Manufactured homes are generally built to the federal HUD Code, while modular homes are built to the state and local codes that apply at their destination. The listing and construction documents should identify the home type and applicable standard.

Floors, walls, roofing, plumbing, electrical systems, insulation, cabinetry, and interior finishes are assembled in planned stages indoors. A repeatable process helps coordinate trades and protects many materials from prolonged exposure to weather during construction.

Inspections and quality checks occur at defined stages before concealed work is closed and before the home leaves the facility. Exact inspection requirements depend on the home type, building program, manufacturer, and destination.

The completed sections are protected for transport and moved by qualified carriers. Route surveys, permits, escorts, weather, bridge limits, and site access can affect scheduling and cost.

At the property, crews place the home on its approved support or foundation system, join sections when applicable, weather-seal connections, and complete contracted finish work. Utilities and occupancy approvals are handled according to local requirements.