Amends existing law to provide a definition for agricultural buildings and that counties shall not alter the provisions of the section.
House Bill 104 amends Idaho’s building code statute governing local government adoption and enforcement of building codes. The bill requires local governments that issue permits and enforce building codes to continue adopting specified state-recognized codes, limits their ability to adopt later or broader versions of certain residential and energy codes, and preserves existing state control over accessibility provisions. It also keeps the current exemption for single-family homes and two-unit dwellings from mandatory automatic fire sprinkler requirements, while allowing voluntary installation.
A major feature of the bill is its treatment of agricultural buildings. It defines “agricultural buildings” broadly to include barns, livestock shelters, poultry buildings, grain silos, storage structures, and similar farm-related structures, while excluding places of human habitation, public use, and certain processing or employment spaces. Counties are required to exempt these buildings from the covered code requirements and are prohibited from narrowing that exemption through local ordinances, including by imposing size limits, exit-travel-distance rules, or sprinkler mandates. Counties may still issue limited permits to ensure compliance with road setbacks and utility easements, but only at actual administrative cost.
The bill also narrows local authority to amend building code provisions. Local jurisdictions may make some amendments to the Idaho residential code for local concerns, but only within specified parts and, for other portions, only upon a showing of good cause related to building or life safety, after public notice and hearing. The bill preserves state jurisdiction over manufactured homes, mobile homes, modular buildings, and commercial coaches, and states that permit applications are governed by the law in effect when the application is received. It includes an emergency clause making the act effective July 1, 2025.
The overall sentiment appears strongly favorable and noncontroversial in the legislature, as reflected by unanimous passage in both chambers: 70-0 in the House and 35-0 in the Senate. The vote totals suggest broad bipartisan support for clarifying agricultural exemptions and limiting local variation in building code enforcement. No committee transcript was provided, so there is no recorded floor or committee debate to indicate formal opposition.
The main point of contention implied by the bill’s structure is the balance between state uniformity and local control. Supporters likely favor preventing counties from imposing additional building code burdens on farm structures and residential construction, while potential critics would be local governments or code-enforcement interests concerned about reduced flexibility to address local safety conditions. The bill’s explicit prohibition on local amendments to accessibility provisions and its restriction on county authority over agricultural buildings indicate a clear policy choice to centralize building-code standards at the state level.
The bill amends Idaho Code section 39-4116 to tighten state control over local building-code adoption and enforcement, especially for residential and agricultural structures. It creates a statutory definition of “agricultural buildings,” requires counties to exempt those buildings from the covered code requirements, and bars local governments from modifying that exemption or imposing sprinkler, size, or exit-distance requirements on those structures. It also limits local authority to amend certain residential code provisions and preserves state-level control over accessibility standards, manufactured housing, modular buildings, and commercial coaches. The act takes effect July 1, 2025, under an emergency clause.
The bill appears to have enjoyed very strong support and little visible opposition. It passed the House 70-0 and the Senate 35-0, indicating unanimous approval in both chambers. The voting record suggests the measure was viewed as a straightforward clarification and preemption of local code authority rather than a controversial policy shift.
The central policy tension is between uniform statewide building standards and local discretion to address local safety or land-use concerns. The bill expressly limits counties’ ability to amend code provisions, especially for agricultural buildings, and prohibits them from narrowing the exemption through local rules. Any likely concern would come from local governments or code officials who may prefer flexibility to impose stricter standards, while supporters likely include agricultural interests, builders, and property owners seeking reduced regulatory burden and clearer statewide rules.