"Is zoning even in place here, or discretionary — and does one of the 2023 housing bills already override whatever the local code says?"
The baseline: discretionary local zoning, adopted under Title 76
Montana has no state mandate that every city or county adopt zoning. Municipal zoning is authorized, not required, under Mont. Code Ann. Title 76, Chapter 2, Part 3 (beginning at § 76-2-301), which lets a municipal governing body divide its jurisdiction into districts and regulate use, height, and density within them. County zoning runs on two separate, older tracks under Title 76, Chapter 2, Parts 1 and 2: a county can adopt zoning county-wide, or a defined area of at least 40 acres can be zoned through what practitioners call "Part 1" or citizen-initiated zoning — a district created by petition of 60% of the affected landowners, followed by a county commission public-interest determination (Mont. Code Ann. § 76-2-101 et seq.). A municipality that has adopted zoning can also extend it up to three miles beyond city limits into unincorporated territory (Mont. Code Ann. § 76-2-310).
The practical result: a site inside Billings, Missoula, Bozeman, Great Falls, or Helena almost certainly sits under an adopted zoning code already, while a site in a smaller town or unincorporated county may or may not — and if it doesn't, entitlement isn't a rezoning process at all, it's the more fundamental question of whether the county has ever created a zoning district covering that land in the first place. MBOH's own QAP reflects this reality rather than layering a state standard on top of it: the Full-Application simply requires "documentation from the city or county affirmatively stating how zoning requirements are met or addressed" (2027 QAP Section VI.A.2, Item 5), which in an unzoned county could mean documentation that no zoning applies at all.
Three statewide preemptions force specific housing types into cities of 5,000 or more
The 2023 Montana Legislature passed a bipartisan package of housing-reform bills that partially preempts local zoning discretion in a way no earlier Montana statute did. Three of those bills directly override local zoning codes in qualifying cities, regardless of what the local code otherwise says:
| Bill | Codified at | What it requires |
|---|---|---|
| SB 323 (2023 Mont. Laws ch. 445) | §§ 76-2-304(3), (5), -309, MCA | Cities with a population of at least 5,000 must allow duplex housing as a permitted use wherever a single-family residence is permitted, on regulations no more restrictive than those for single-family homes. |
| SB 245 (2023 Mont. Laws ch. 499) | § 76-2-304(4), MCA | Urban municipalities of at least 5,000 must permit multiple-unit dwellings and mixed-use developments that include multiple-unit dwellings in commercial zones served by municipal water and sewer. |
| SB 528 (2023 Mont. Laws ch. 502) | § 76-2-345, MCA | Every municipality must allow at least one accessory dwelling unit by right on a lot with a single-family dwelling, capped at 75% of the primary dwelling's floor area or 1,000 square feet (whichever is less), with no owner-occupancy requirement, no added parking or impact-fee requirement, and an application fee capped at $250. |
A related, separate change to the same section — effective October 1, 2026 — bars a municipality from requiring more than one parking space per residential dwelling unit (beyond ADA-accessible spaces), with exceptions for changes of use, child care, deed-restricted affordable housing, and assisted living (§ 76-2-304(5), MCA).
Secondary press coverage from 2023 sometimes cites a 7,000-population threshold for SB 245; the statute's current text and the Montana Supreme Court's own 2026 opinion both state the threshold as 5,000, matching SB 323 — this guide uses the statutory and judicial figure.
A state inclusionary-zoning ban runs alongside the preemptions
Separately from the 2023 package, Montana bars local governments from requiring inclusionary housing on two fronts. On the subdivision side, Mont. Code Ann. § 76-3-514 (enacted by 2021's HB 259) prohibits a local government from requiring, as a condition of subdivision approval, either a fee or a dedication of real property for the purpose of providing housing at specified income levels or sale prices — an absolute prohibition with no carve-out named in the statute itself for voluntary incentive programs. On the zoning side, the 2023 Land Use Planning Act separately bars an MLUPA-covered municipality from requiring fees or land dedication tied to affordable-housing income targets as a condition of zoning approval (Mont. Code Ann. § 76-25-303). Before the ban, only Whitefish and Bozeman ran inclusionary zoning programs in Montana; a voluntary, developer-elected density-bonus program — the kind Missoula and Bozeman both operate — is a different thing entirely and remains lawful, since nothing in the ban touches a program a developer can choose to opt into for an incentive rather than being required to satisfy as a condition of approval.
The Montana Land Use Planning Act: mandatory for ten cities, litigated for three years, and settled in March 2026
SB 382 (2023 Mont. Laws ch. 500), codified at Mont. Code Ann. Title 76, Chapter 25, created the Montana Land Use Planning Act (MLUPA) — the one place Montana law actually mandates zoning and planning activity rather than merely authorizing it. MLUPA applies to municipalities with a population of 5,000 or more located in a county with a population of 70,000 or more (Mont. Code Ann. § 76-25-102(1)), a threshold that as of this research reportedly captures ten cities: Bozeman, Helena, Billings, Great Falls, Missoula, Kalispell, Columbia Falls, Whitefish, Belgrade, and Laurel — this guide could not independently verify that list against current Census population figures and treats it as reported rather than confirmed. A covered municipality must adopt a land use plan and future land use map, then adopt zoning and subdivision regulations in substantial compliance with that plan, with public participation built into each adoption and amendment stage (Mont. Code Ann. §§ 76-25-201, -202, -301, -401).
The mechanism that matters most for entitlement timing is what happens after a covered city's new land use plan and regulations are in place: a site-specific development application that is in "substantial compliance" with the adopted land use plan and regulations can be approved administratively by a planning administrator, without a further public hearing, unless the proposal creates new or significantly increased impacts that weren't already considered when the plan or regulations were adopted (Mont. Code Ann. § 76-25-106(4)(d); §§ 76-25-305(4)–(6), -408(7)). Where new or increased impacts are identified, the planning administrator must open a 15-business-day public comment period limited to those specific impacts (Mont. Code Ann. §§ 76-25-305(5)–(6), -408(8)). Either the applicant or an aggrieved party can appeal a planning administrator's decision to the planning commission within 15 business days, and from there to the governing body within another 15 business days, both reviewed de novo (Mont. Code Ann. § 76-25-503(3)–(4)).
That streamlined process was under a real legal cloud for over two years. A Gallatin County district court initially enjoined SB 323 and SB 528 in December 2023; the Montana Supreme Court reversed that injunction 5–0 in September 2024 (Montanans Against Irresponsible Densification, LLC v. State, 2024 MT 200 — "MAID I"). On remand, the district court upheld SB 323, SB 245, and SB 528 in full in March 2025, but ruled that MLUPA's limits on public participation in site-specific decisions were facially unconstitutional. Both sides appealed, and on March 17, 2026, the Montana Supreme Court unanimously reversed that remaining piece: it held MLUPA's public-participation provisions are justiciable but do not facially violate Montanans' constitutional right to participate, because the public already gets a genuine opportunity to weigh in during the land use plan and regulation adoption process itself, and again on any impact a site-specific approval raises that wasn't already considered. The Court separately affirmed that none of the 2023 housing-reform statutes violate equal protection, and vacated — as not yet a live dispute — the district court's ruling on whether these statutes override private restrictive covenants, leaving that specific question formally unresolved (Montanans Against Irresponsible Densification, LLC v. State, 2026 MT 53, Dkt. DA 25-0200).
One more date belongs on any MLUPA-jurisdiction timeline: the 2025 Legislature passed SB 121 (2025 Mont. Laws ch. 555) while this appeal was pending, adding notice, a 15-day comment period on initial site-specific determinations, and an iterative review process — but with a sunset clause terminating those specific amendments on June 30, 2027. A project working through an MLUPA city's process today should confirm which version of the participation rules is in effect on the calendar date the application is filed, not assume the rules found in this guide remain static past that sunset.
What this looks like on the ground: five cities, in different stages of rewriting their codes, and tribal reservations on an entirely separate track
As of this research, Montana's largest MLUPA cities are all mid-overhaul rather than settled: Bozeman's City Commission adopted a full replacement of its zoning and development code (Ordinance 2151, replacing Chapter 38 of the municipal code) on December 16, 2025, effective February 1, 2026. Missoula has been amending its own affordable-housing density-bonus program — most recently through Ordinance 3735 in April 2024, extending the bonus into additional commercial and mixed-residential districts — while working through a separate MLUPA-driven rewrite of its zoning code and map reported as of early 2026. Columbia Falls' city council approved a new land use plan and zoning and subdivision regulations in June 2026. None of this is settled background law the way an established zoning code would be — an entitlement strategy for a site in one of these cities should start from that city's current adopted code as of the application date, not from a description of "how the code used to work," given how recently and how substantially each of these codes has changed.
Reservation land runs on a wholly different legal track that Montana zoning law does not reach. A tribal government's own land use or building code governs trust and tribal-member fee land within a reservation's exterior boundaries; federal Indian law, not Montana's Title 76, sets the outer bounds of that authority. The U.S. Supreme Court's Montana v. United States, 450 U.S. 544 (1981) — arising from a dispute over the Crow Reservation — held that a tribe generally cannot enforce its own regulations against non-member-owned fee land within reservation boundaries unless the fee owner has consented or the activity threatens the tribe's political integrity, economic security, or health and welfare. Because reservation land ownership in Montana is frequently "checkerboarded" — trust, tribal-member fee, and non-member fee parcels intermixed within the same exterior boundary — which entity actually has jurisdiction over a given parcel's entitlement (the tribal government, the county, or both, in some sequence) can turn on the parcel's specific ownership history in a way that a standard zoning lookup will not surface. This research did not attempt to catalog each of Montana's seven reservations' individual land use codes; that step belongs to project-specific diligence with the relevant tribal government and, where trust land or federal financing is involved, the Bureau of Indian Affairs.
Where this goes wrong
- Assuming every Montana city or county has adopted zoning. Both municipal zoning (Title 76, Ch. 2, Part 3) and county zoning (Parts 1–2) are locally optional, not mandatory — an unzoned county requires confirming that fact, not searching for a code that may not exist.
- Treating the 2023 duplex, ADU, and commercial multi-unit preemptions as universal. All three apply only in cities meeting the 5,000-population threshold in §§ 76-2-304 and -345, MCA — a site in a smaller town or unincorporated county gets none of them.
- Citing a 7,000-population threshold for SB 245's commercial-zone mandate. The statute's current text and the Montana Supreme Court's 2026 opinion both state 5,000, matching SB 323 — some 2023-era press coverage used a different, apparently superseded figure.
- Assuming SB 323, SB 528, and SB 382 were still under injunction or otherwise legally uncertain. All three cleared their final constitutional challenge in the Montana Supreme Court's March 17, 2026 decision in MAID v. State, 2026 MT 53 — treating them as live litigation risk after that date is stale.
- Assuming a voluntary, developer-elected density bonus for affordable housing is illegal under Montana's inclusionary-zoning ban. The ban (Mont. Code Ann. § 76-3-514; § 76-25-303) reaches mandatory fees or dedications imposed as a condition of approval — not a program a developer opts into for an incentive, which is how Missoula's and Bozeman's density-bonus programs are structured.
- Assuming MLUPA's administrative, no-additional-hearing approval path is available in every Montana city. It only applies in the ten cities meeting MLUPA's population-and-county thresholds, and only once that city has actually adopted its new land use plan, zoning, and subdivision regulations under the Act (Mont. Code Ann. §§ 76-25-102, -201, -301, -401).
- Treating MLUPA's 2023 public-participation rules as the current, permanent version. SB 121 (2025 Mont. Laws ch. 555) added notice and comment-period provisions with a sunset clause terminating them on June 30, 2027 — confirm which version applies on the filing date.
- Relying on a description of a specific MLUPA city's zoning code without checking whether that city has adopted a new code recently. Bozeman, Missoula, and Columbia Falls have each substantially rewritten their codes within roughly the last two years as of this research.
- Treating the Montana Supreme Court's ruling on equal protection and public participation as also resolving whether these statutes override private restrictive covenants. The Court vacated the district court's ruling on that question as not yet justiciable — it remains formally unresolved, not affirmatively decided either way.
- Assuming county zoning jurisdiction automatically extends onto reservation land. Montana v. United States, 450 U.S. 544 (1981), and reservation checkerboarding generally put trust and tribal-member fee land outside county zoning authority and outside full tribal authority over non-member fee land — jurisdiction has to be checked parcel by parcel, not assumed from the exterior reservation boundary alone.
- Filing an MBOH Full-Application on the assumption that zoning documentation means the same thing for a rezoning-dependent New Construction site as it does for an Acquisition/Rehabilitation site. The QAP itself only asks for documentation of "how zoning requirements are met or addressed" (2027 QAP Section VI.A.2, Item 5) — it does not independently define what counts as a resolved entitlement, so the underlying local or tribal approval still has to be real and current.
- HUD
- LIHTC
- State QAPs
- IRS § 42
- Housing Finance Agencies