STATE LEGAL PRECEDENT: MONTANA

MAID v. Montana

Montanans Against Irresponsible Densification (MAID) v. State of Montana (DA 25-0200) addressed whether a series of statewide housing reforms adopted by the Montana Legislature in 2023 violated the state constitution. MAID, an advocacy group representing homeowners, challenged multiple laws that limited local zoning authority and required municipalities to allow additional housing types such as duplexes and accessory dwelling units. The plaintiffs argued the laws infringed on constitutional protections related to equal protection, due process, and public participation in local land use decisions. The State of Montana, joined by intervening property owners represented by the Pacific Legal Foundation, defended the laws as a lawful exercise of legislative authority to address a statewide housing shortage.

In March 2026, the Montana Supreme Court unanimously upheld the challenged laws, finding they were constitutional and within the Legislature’s authority. The Court affirmed a lower court ruling that the law didn’t violate equal protection and reversed a lower court ruling that the law violated the state constitution’s right to participate in government decisions

PRECEDENT

The Court rejected MAID’s claims, concluding that the reforms were rationally related to a legitimate state interest in increasing housing supply and the alleged harms were speculative. The ruling also reversed a lower court decision that had partially invalidated provisions related to public participation, reinstating the full 2023 housing package known as the “Montana Miracle.”

MAID v. Montana affirms that the state sets the standards under which zoning regulations can function to advance broader housing policy objectives and reinforces the Legislature’s authority to enact statewide land use reforms.

“Because the Legislature has ‘provided by law’ a detailed provision for notice and public participation, we conclude that MAID has not met its heavy burden to show that Senate Bill 382 is unconstitutional in all of its applications.”

–Justice Beth Baker

IMPACT ON HOUSING

When state-level zoning reforms began being enacted in the early 2020s, opponents sought legal challenges as a final attempt to halt these reforms. While the basis of the case was unlike other challenges due to Montana’s constitutional provisions on public participation, the intent of the challenge and the result were no different.

The Montana Supreme Court’s protection of the 2023 reforms paves the way for full implementation of the laws as the Legislature intended.