MO HB3230

Prohibits local governments from banning modular homes or qualified manufactured homes in residential zones where single-family housing is permitted, or from imposing more restrictive requirements than those applied to site-built homes

Defines "qualified manufactured home" as one manufactured within five years of installation, at least 20 feet wide or two stories, minimum 900 square feet, affixed to a permanent foundation with masonry enclosure, and built to federal HUD standards

Allows local governments to adopt compatibility standards for manufactured housing placement, but standards cannot be more stringent than those applied to other single-family construction in the same zone

Preserves local authority to protect historic properties and districts, and does not limit private restrictions through homeowner associations or deed covenants

Includes an emergency clause for immediate effect upon passage due to "urgent need" for fair zoning regulations for modular and manufactured homes