Factory-Built Housing
Fannie Mae
Updated 10-31-2026
Factory-Built Housing
Prefabricated single-family housing (such as panelized, modular, or sectional housing), which is constructed in a factory (and, if applicable, in accordance with the building codes of the state in which the factory is located) and is subsequently joined together at a permanent building site, assumes the characteristics of site-built housing (such as permanent connections to water, electrical, and waste disposal systems), and is legally classified as real property. (Collectively, this term also may refer to HUD code manufactured homes. See the definition of that term for distinctions between the different types of factory-built housing.)
Fannie Mae Glossary of Terms
Fannie Mae · p. 15
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