This Idaho bill requires cities with more than 10,000 residents to allow starter home subdivisions by February 1, 2027, which are residential developments on at least four acres featuring smaller lots up to 1,500 square feet and compact homes. The law prohibits cities from enforcing ordinances that ban these subdivisions and sets specific limits on lot sizes, setbacks, and fees to make development more affordable while maintaining neighborhood compatibility. Cities retain the ability to deny approvals if infrastructure cannot support the development and must still comply with existing health, safety, and environmental regulations. The measure applies only to incorporated cities and does not affect historic districts or properties designated as historic landmarks.
This bill updates Idaho law to allow accessory dwelling units (ADUs) in single-family homes and restricts restrictions that would ban them. It prohibits homeowner associations from enforcing rules that strictly forbid ADUs, except when property owners agree in writing to such restrictions. For cities with populations over 10,000, the bill requires local governments to allow one internal or detached ADU per lot in single-family zones by February 2027. Local governments must also stop imposing higher fees, stricter parking rules, or smaller size limits on ADUs compared to primary homes. The law ensures ADU projects are approved automatically if they meet standard zoning requirements, while still allowing cities to adopt less restrictive rules if they choose.
This bill updates Idaho state laws to allow manufactured homes to be placed on single-family residential lots, in addition to existing mobile home parks and subdivisions. It clarifies definitions for manufactured homes versus mobile homes and requires local governments to revise their comprehensive plans and zoning regulations to permit this siting option. The legislation also establishes specific placement standards for manufactured homes outside of parks, including minimum square footage, foundation requirements, roof design, and exterior appearance guidelines that must match surrounding homes. Local governments retain the ability to apply additional development standards that would apply to conventional single-family homes on the same lots, while the bill prohibits standards that unreasonably discourage needed housing.
This Idaho bill creates a new process for property owners to quickly remove unlawful occupants from residential properties. Property owners must submit a verified complaint to the sheriff meeting specific conditions (like prior notice to leave and no pending lawsuits), after which the sheriff serves an immediate vacate notice and restores possession. The sheriff is entitled to a standard fee for this service, revised to match the fee for serving a writ of possession. This directly affects property owners seeking to evict unauthorized occupants and the occupants themselves in residential disputes.
H 557 prevents Idaho cities and counties from creating local anti-discrimination laws that are stricter than state law. It specifically blocks local ordinances covering employment, housing, education, or public accommodations from expanding on state protections. Businesses or property owners can sue local governments that violate this rule, seeking court orders to stop enforcement and recover damages. The bill aims to create statewide consistency in anti-discrimination rules, arguing that varying local laws hinder economic growth and create legal conflicts for businesses. It takes effect on July 1, 2026.
