Section 76-2-304 - Criteria and guidelines for zoning regulations(1) Zoning regulations must be: (a) made in accordance with a growth policy; and(b) designed to: (i) secure safety from fire and other dangers;(ii) promote public health, public safety, and the general welfare; and(iii) facilitate the adequate provision of transportation, water, sewerage, schools, parks, and other public requirements.(2) In the adoption of zoning regulations, the municipal governing body shall consider: (a) reasonable provision of adequate light and air;(b) the effect on motorized and nonmotorized transportation systems;(c) promotion of compatible urban growth;(d) the character of the district and its peculiar suitability for particular uses; and(e) conserving the value of buildings and encouraging the most appropriate use of land throughout the jurisdictional area.(3) In a city with a population of at least 5,000 residents, duplex housing must be allowed as a permitted use on a lot where a single-family residence is a permitted use, and zoning regulations that apply to the development or use of duplex housing may not be more restrictive than zoning regulations that are applicable to single-family residences.(4)(a) In a municipality that is designated as an urban area by the United States census bureau with a population over 5,000 as of the most recent census, the city council or other legislative body of the municipality shall allow as a permitted use multiple-unit dwellings and mixed-use developments that include multiple-unit dwellings on a parcel or lot that: (i) has a will-serve letter from both a municipal water system and a municipal sewer system; and(ii) is located in a commercial zone.(b) Zoning regulations in municipalities meeting the requirements of subsection (4)(a) may not include a requirement to provide more than: (i) one off-street parking space for each unit and accessible parking spaces as required by the Americans With Disabilities Act of 1990, 42 U.S.C. 12101, et seq.; or(ii) an equivalent number of spaces required under subsection (4)(b)(i) provided through a shared parking agreement.(5) As used in this section, the following definitions apply: (a) "Duplex housing" means a parcel or lot with two dwelling units that are designed for residential occupancy by not more than two family units living independently from each other.(b) "Family unit" means: (i) a single person living or residing in a dwelling or place of residence; or(ii) two or more persons living together or residing in the same dwelling or place of residence.(c) "Mixed-use development" means a development consisting of residential and nonresidential uses in which the nonresidential uses are less than 50% of the total square footage of the development and are limited to the first floor of buildings that are two or more stories.(d) "Multiple-unit dwelling" means a building designed for five or more dwelling units in which the dwelling units share a common separation like a ceiling or wall and in which access cannot be gained between units through an internal doorway, excluding common hallways.(e) "Single-family residence" has the meaning provided in 70-24-103.Amended by Laws 2023, Ch. 445,Sec. 1, eff. 1/1/2024.Amended by Laws 2023, Ch. 499,Sec. 1, eff. 5/17/2023, and applicable retroactively, within the meaning of 1-2-109, to municipal zoning regulations enacted or adopted on or before 5/17/2023.En. Sec. 3, Ch. 136, L. 1929; re-en. Sec. 5305.3, R.C.M. 1935; R.C.M. 1947, 11-2703; amd. Sec. 17, Ch. 582, L. 1999; amd. Sec. 6, Ch. 87, L. 2003; amd. Sec. 11, Ch. 446, L. 2009.