Mobile home manufacturers work in large factories to construct homes in one or more sections for moving to a final location for setup. A construction team puts the home together without interference from the weather. The manufacturer works under the U.S. Department of Housing and Urban Development guidelines.
The factory setting reduces costs for manufacturing homes. It eliminates many of the delays common with stick-built homes and travel time to the construction site. Most manufacturers use computer-assisted drafting to plan the home, giving the buyer many choices in floor plans and finishes. The process also allows the buyer to choose customized finishes and trims.
HUD works with 38 states and private inspectors to ensure mobile home manufacturers meet the code requirements. While such inspectors do not necessarily inspect every day, they do make periodic checks at mobile home manufacturers to ensure the products meet the federal requirements.
As of 2015, over 90 percent of manufactured homes remain in their initial placement. While it is theoretically possible to move the home, it is not practical in most situations. With the formalization of the HUD code in 1976, the quality of mobile homes is increased, so homes are better constructed than the trailer houses of the earlier era.