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Montana State overlays

All 7 tracked preemption laws for Montana.

Overview

All tracked preemption laws for Montana. Click any law for its trigger predicate, preempted fields, and source citation.

Laws tracked
7
Preempted fields
17
Required city attrs
2
Last reviewed
2026-04-19
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Tracked laws

Montana SB 323 — Duplex By-Right in Cities >=5,0003 fields
Effective
2023-10-01
Authority
state · scope: state:MT
ID
MT_SB323_DUPLEX_BY_RIGHT_2023
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Montana SB 528 — ADU Statewide By-Right4 fields
Effective
2023-10-01
Authority
state · scope: state:MT
ID
MT_SB528_ADU_BY_RIGHT_2023
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Montana SB 382 — Montana Land Use Planning Act2 fields
Effective
2023-10-01
Authority
state · scope: state:MT
ID
MT_SB382_LAND_USE_PLANNING_ACT_2023
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Montana HB 819 — Minimum Lot Size Cap in Cities >=5,0003 fields
Effective
2023-10-01
Authority
state · scope: state:MT
ID
MT_HB819_LOT_SIZE_CAP_2023
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Montana HB 337 — Parking Minimum Cap for Multifamily Near Transit1 field
Effective
2023-10-01
Authority
state · scope: state:MT
ID
MT_HB337_PARKING_CAP_MF_TRANSIT_2023
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Montana SB 245 — Density Restriction Preemption in Residential Zones3 fields
Effective
2023-10-01
Authority
state · scope: state:MT
ID
MT_SB245_DENSITY_PREEMPTION_2023
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Montana Property Tax Mill Levy Cap1 field
Effective
1986-01-01
Authority
state · scope: state:MT
ID
MT_PROPERTY_TAX_CAP_PREEMPTION
Open detail →

Required city attributes

Required city attributes

The evaluator needs these city-level facts present to resolve whether a given law's predicate fires.

  • population
  • county_population