Manufactured homes are built in the controlled environment of a manufacturing facility to Federal building standards outlined by the Manufactured Home Construction and Safety Standards (HUD Code). This code is written and enforced by Housing and Urban Development (HUD). Manufactured or HUD homes are single-family dwellings that are single-section or multi-sectional. Manufactured homes are constructed on a permanent chassis system and are typically placed on a cement slab. HUD inspectors are responsible for approving all home designs and to inspect the manufacturing facilities for building code compliance.