What Is the Montana Land Use Planning Act?

The Montana Land Use Planning Act is a 2023 state law, codified at Title 76, Chapter 25 of the Montana Code Annotated, that requires the state’s larger cities and counties to adopt detailed land use plans, future land use maps, pro-housing zoning strategies, and fixed permit review deadlines by May 17, 2026.1Montana State Legislature. Montana Land Use Planning Act – SB 382 Enrolled Bill Passed as Senate Bill 382, it replaces the older advisory growth policy framework with a more prescriptive system that carries real timelines and a structured appeals process.

Which Cities and Counties It Covers

The Act applies based on population. A county must comply if it had at least 70,000 residents in the most recent decennial census, and any municipality within that county must comply if it had at least 5,000 residents.1Montana State Legislature. Montana Land Use Planning Act – SB 382 Enrolled Bill In practice that covers Montana’s most populated areas, including Billings, Missoula, Great Falls, and their surrounding counties.

Local governments that met the thresholds when the Act took effect had three years to comply, putting the initial deadline at May 17, 2026.2Montana State Legislature. 2023 Land Use Legislation: Easing the Housing Crisis – Final Report If a jurisdiction adopted a growth policy within the five years before the Act’s effective date, its deadline runs five years from that adoption or three years from the Act, whichever is later. Communities that cross the thresholds in a future census must comply by December 31 of the fifth year after that census.

Smaller jurisdictions can voluntarily opt in. So far, Lewistown is the only one that has done so.2Montana State Legislature. 2023 Land Use Legislation: Easing the Housing Crisis – Final Report Everywhere else below the thresholds, the old planning statutes still govern.

What a Land Use Plan Must Contain

Covered local governments have to produce a plan that goes well beyond the old growth policy format. At minimum, it has to inventory and describe existing conditions in six categories: housing, local services and facilities, economic development, natural resources, environment, and hazards.1Montana State Legislature. Montana Land Use Planning Act – SB 382 Enrolled Bill The plan then has to analyze how the jurisdiction will accommodate projected population growth over the next 20 years across each of those categories.

The housing analysis is especially detailed. Jurisdictions must quantify existing and projected housing need by type, inventory available sites, analyze constraints such as zoning barriers and infrastructure capacity, and describe the actions the jurisdiction will take to meet projected demand.1Montana State Legislature. Montana Land Use Planning Act – SB 382 Enrolled Bill The local services section requires an assessment of public safety, emergency services, water and sewer infrastructure, transportation, and the other public facilities needed to serve that population.

Every plan must also include a future land use map projecting where and how the jurisdiction expects to develop over 20 years, covering residential, commercial, mixed-use, industrial, agricultural, recreational, and conservation uses.3Montana State Legislature. Montana Code 76-25-213 – Land Use and Future Land Use Map The map and its written description must show that enough land is designated to accommodate the projected population in areas where services can be cost-effectively provided, that adequate sites exist for the housing types the population will need, and that unsuitable areas are identified along with the reasons. The map itself does not create regulatory authority; it informs zoning and subdivision decisions rather than acting as a standalone enforcement tool.

Natural hazards get folded into this same framework. Land use plans must include maps identifying flooding, wildfire, earthquakes, steep slopes, and other geologic hazards, and the future land use map must reflect those considerations.1Montana State Legislature. Montana Land Use Planning Act – SB 382 Enrolled Bill For communities in the wildland-urban interface, that means fire risk must be mapped and factored into decisions about where and how densely to build.

The Pro-Housing Zoning Requirement

The biggest practical change is on housing. Covered jurisdictions must include at least five pro-housing strategies in their zoning regulations, applicable to the majority of the area where residential development is allowed. The legislature wrote a menu of 14 options and left the choice to each community:1Montana State Legislature. Montana Land Use Planning Act – SB 382 Enrolled Bill

  • Allowing at least a duplex as a permitted use wherever single-unit dwellings are permitted
  • Allowing triplexes and fourplexes wherever single-unit dwellings are permitted
  • Zoning for higher-density housing near transit, employers, higher education, and similar activity centers
  • Allowing at least one internal or detached accessory dwelling unit on a lot with a single-unit primary residence
  • Permitting single-room occupancy developments
  • Allowing multi-unit dwellings or mixed-use development as a permitted use on all lots where office, retail, or commercial uses are primary permitted uses
  • Allowing multi-unit dwellings as a permitted use on all lots where triplexes or fourplexes are permitted
  • Zoning that specifically allows or encourages tiny house development as defined in Appendix Q of the International Residential Code
  • Eliminating minimum lot sizes or reducing them by at least 25%
  • Eliminating setback requirements or reducing them by at least 25%
  • Increasing building height limits for dwelling units by at least 25%
  • Eliminating or reducing off-street parking requirements to no more than one space per dwelling unit
  • Eliminating impact fees for accessory dwelling units or multi-unit developments, or reducing them by at least 25%
  • Eliminating or significantly reducing massing, material, and bulk requirements for multi-unit or mixed-use developments

Each community picks the five (or more) that fit, but no covered jurisdiction can skip the requirement. For areas that historically zoned almost exclusively for single-family homes, at least some residential land will have to open up to denser housing types.

Faster, Fixed Permit and Subdivision Timelines

Under the old system, reviews could drag on without clear limits. The Act imposes specific deadlines at each stage of subdivision review:4Montana State Legislature. Montana Land Use Planning Act – SB 382

  • Preapplication review within 30 business days of a written request from the subdivider
  • Exemption applications approved or denied within 20 business days
  • Completeness determination on a subdivision application within 20 business days
  • Preliminary plat decision within 15 business days of a complete application when the proposal substantially complies and all impacts were previously analyzed
  • Preliminary plat decision within 30 business days after a 15-business-day comment period when the proposal raises new or significantly increased impacts
  • Final plat completeness check within 10 business days
  • Final plat approval or denial within 20 business days after the plat is deemed complete

Zoning permits follow a similar two-track approach. If a proposed development substantially complies with the regulations and the impacts were previously analyzed, the planning administrator handles approval as a ministerial action. If a project may create new or significantly increased impacts, the administrator must provide notice and open a 15-business-day written comment period before deciding.1Montana State Legislature. Montana Land Use Planning Act – SB 382 Enrolled Bill

The clock resets if an application is incomplete, so a thorough submission from the start is the best way to keep the process on schedule.

How the Public Participates

When a local government adopts, amends, or updates a land use plan or its implementing regulations, the Act requires “continuous public participation.” At minimum, that means disseminating draft documents, offering opportunities for written and verbal comments, holding public meetings after effective notice, providing electronic access to documents and updates, and producing a written response to public comments.5Montana State Legislature. Montana Code 76-25-106 – Public Participation

Local governments pick their specific outreach methods but must clearly explain what is under consideration, what feedback they are seeking, and how to participate. All comments and outreach become part of the administrative record. The Montana Department of Commerce has published a guide of best practices for jurisdictions working through these requirements.6Montana Department of Commerce. A Guide to Public Participation Under the Montana Land Use Planning Act

Appealing a Decision

The appeals process is layered, and the path depends on what you are challenging. Deadlines are short, so acting quickly matters.

Challenging a Plan, Zoning Map, or Regulation

To challenge the adoption of or amendment to a land use plan, zoning regulation, zoning map, or subdivision regulation, you file a petition in district court within 30 days of the date the governing body adopted the resolution or ordinance.7Montana State Legislature. Montana Code 76-25-503 – Appeals, Public Hearing and Notice Miss that 30-day window and you lose the right to challenge in court.

Challenging an Individual Permit or Variance Decision

For permit approvals, permit denials, conditions attached to a permit or plat, variance decisions, and interpretations of land use regulations, you have to work through local administrative channels before going to court. The first step is a written appeal to the planning commission within 15 business days of the challenged decision. Your written appeal must state all facts and raise every ground you might later want to argue in court; issues not raised are waived.7Montana State Legislature. Montana Code 76-25-503 – Appeals, Public Hearing and Notice The planning commission holds a new hearing, is not bound by the original decision, and you carry the burden of proving the original decision was wrong.

If the planning commission’s ruling goes against you, the next step is an appeal to the governing body (city council or county commission), again within 15 business days, under the same rules. Only after exhausting both administrative steps can you file in district court. Skipping ahead will get the case dismissed.

What the Act Does Not Do

A common misconception is that the Montana Environmental Policy Act (MEPA) applies to local planning decisions under this framework. It does not. MEPA requires environmental impact analysis for actions by state government agencies, not for city or county decisions.8Montana State Legislature. A Citizens Guide to Public Participation in Environmental Decisionmaking The hazard mapping and environmental inventories the Act requires fill part of that gap at the local level, but they are a separate process from MEPA’s Environmental Impact Statement.