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MT SB266

MT SB266
Revise municipal zoning to allow for triplex and fourplex housing


summary

Introduced
02/04/2025
In Committee
03/04/2025
Crossed Over
03/03/2025
Passed
Dead
05/23/2025

Introduced Session

2025 Regular Session

Bill Summary

AN ACT ENTITLED: “AN ACT GENERALLY REVISING ZONING LAWS; REQUIRING CERTAIN CITIES TO PERMIT THE USE OF TRIPLEX AND FOURPLEX HOUSING IN ZONING REGULATIONS; REQUIRING THAT ZONING REGULATIONS FOR DUPLEX, TRIPLEX, AND FOURPLEX HOUSING ARE NOT MORE STRINGENT THAN ZONING REGULATIONS FOR SINGLE-FAMILY RESIDENCES; PROVIDING DEFINITIONS; AND AMING SECTIONS 76-2-304, 76-25-302, AND 76-25-303, MCA; AND PROVIDING A DELAYED EFFECTIVE DATE.”

AI Summary

This bill revises municipal zoning laws to require cities with at least 5,000 residents to permit triplex and fourplex housing on lots where single-family residences are allowed, ensuring that zoning regulations for these multi-unit housing types are not more restrictive than those for single-family homes. The legislation defines triplex housing as a parcel with three dwelling units for up to three independent family units, and fourplex housing as a parcel with four dwelling units for up to four independent family units. Additionally, the bill amends existing housing development strategies to encourage more diverse housing options, such as allowing triplexes and fourplexes as permitted uses, reducing parking requirements, eliminating impact fees, and removing certain aesthetic and development restrictions. The bill also prohibits local governments from denying or imposing more stringent regulations on duplex, triplex, or fourplex housing compared to single-family residences. The changes are set to take effect on October 1, 2026, giving municipalities time to adjust their zoning regulations to comply with the new requirements.

Committee Categories

Government Affairs

Sponsors (1)

Last Action

(S) Died in Process (on 05/23/2025)

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