Manufactured homes, previously known as mobile homes, are designed, constructed, inspected, and certified under a federal program administered by the U. S. Department of Housing and Urban Development (HUD). These homes are built on a permanent chassis, are transportable in one or more sections, are designed to be used as single family dwellings when connected to the required utilities, may be sited with or without a permanent foundation, and include the plumbing, heating, air-conditioning, and electrical systems contained in the structure. View details and an image of the label (PDF).
Modular homes have an industrial seal rather than a 'HUD seal' and are built off site to the Virginia Uniform Statewide Building Code.