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Bill

S 1353

HOUSING – Adds to existing law to establish provisions regarding regulation of twin homes and duplexes.

68th Legislature, 2nd Regular Session (2026)

Idaho bill establishes state regulatory framework for twin homes and duplexes to standardize classification and development of these multi-unit residential properties.

Read first time as amended, filed for Second Reading
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Bill Summary · S 1353

Legislative bill overview

S 1353 establishes new regulatory provisions governing the development and operation of twin homes and duplexes in Idaho. The bill amends existing housing law to create a framework for how these multi-unit residential properties are classified, developed, and regulated at the state level.

Why is this important

Twin homes and duplexes represent an important middle ground between single-family homes and larger apartment complexes, potentially increasing housing supply and affordability in Idaho's growing communities. How these properties are regulated affects housing developers' ability to build them, local zoning decisions, property owner rights, and the availability of moderately-priced housing options for Idaho residents.

Potential points of contention

  • Local control vs. state mandates: Whether state-level regulations override or conflict with local city and county zoning decisions that have traditionally governed residential development
  • Definition and classification disputes: How twin homes and duplexes are specifically defined in the law could affect which properties fall under new regulations and how existing properties are reclassified
  • Development incentives: Whether the bill encourages or restricts these housing types through its regulatory approach, and whether it benefits or burdens developers and property owners

Compiled from official sources — confirm details with the bill’s official record.

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