The "Montana Land Use Planning Act" aims to improve the health, safety, and welfare of residents by establishing a comprehensive framework for land use planning that balances private property rights with public services and environmental considerations. The bill mandates local governments to develop land use plans that address housing, economic development, natural resources, and hazards, while also emphasizing public participation in the planning process. Key provisions include the establishment of planning commissions, requirements for municipalities with specific population thresholds to comply with the act, and the adoption of public participation plans. The bill also streamlines the regulatory framework by repealing certain existing sections of the Montana Code Annotated related to land use planning.

Additionally, the bill outlines procedures for zoning, subdivision regulations, and the approval process for developments, including the requirement for applications that lie partly within an incorporated city to be approved by both city and county governing bodies. It introduces provisions for interim zoning ordinances, mandates public review and comment periods for subdivisions, and establishes conditions for land donations and park dedications. The act also allows for the granting of variances, an appeals process for land use decisions, and civil penalties for violations. Overall, the Montana Land Use Planning Act seeks to enhance local governance in land use while promoting housing development and ensuring community interests are protected.