76-2-302. Zoning districts. (1) For the purposes of 76-2-301, the local city or town council or other legislative body may divide the municipality into districts of the number, shape, and area as are considered best suited to carry out the purposes of this part. Within the districts, it may regulate and restrict the erection, construction, reconstruction, alteration, repair, or use of buildings, structures, or land, including the creation of zoning districts that allow tiny dwelling units.

(2) All regulations must be uniform for each class or kind of buildings throughout each district, but the regulations in one district may differ from those in other districts.

(3) (a) Zoning regulations adopted under this part may not treat manufactured housing or factory-built housing units differently from any other residential units.

(b) In a proceeding for a permit or variance to place manufactured housing or factory-built housing within a residential zoning district, there is a rebuttable presumption that placement of a manufactured home or factory-built home will not adversely affect property values of conventional housing.

(4) As used in this section, the following definitions apply:

(a) "Factory-built housing" means a factory-assembled structure intended for residential use that:

(i) is equipped with the necessary service connections but not made to be readily movable as a unit or units;

(ii) is designed to be used with a permanent foundation; and

(iii) is not certified by the United States department of housing and urban development but meets the inspection requirements of Title 50, chapter 60, part 4.

(b) "Manufactured housing" means a single-family dwelling, built offsite in a factory, that is in compliance with the applicable prevailing standards of the United States department of housing and urban development at the time of its production. A manufactured home does not include a mobile home or housetrailer, as defined in 15-1-101.

(c) (i) "Tiny dwelling unit" means a residential dwelling unit that is 350 to 750 square feet, is on a permanent foundation, and is used as a single-family dwelling for at least 45 days or longer.

(ii) Appendix Q, tiny houses, of the International Building Code as it was printed on January 1, 2023, may govern all other requirements of a tiny dwelling unit that is 350 to 750 square feet.

(5) This section may not be construed to limit conditions imposed in historic districts, local design review standards, existing covenants, or the ability to enter into covenants pursuant to Title 70, chapter 17, part 2. Local design review standards imposed by a local government must be clear, objective, and necessary to protect public health or safety or to comply with federal law.

(6) Zoning regulations may not include a requirement to:

(a) pay a fee for the purpose of providing housing for specified income levels or at specified sale prices; or

(b) dedicate real property for the purpose of providing housing for specified income levels or at specified sale prices.

(7) A dedication of real property as prohibited in subsection (6)(b) includes a payment or other contribution to a local housing authority or the reservation of real property for future development of housing for specified income levels or specified sale prices.

(8) When reviewing an application for a zoning permit or variance from local design review standards, the determination of compliance with local design review standards as provided in subsection (5) must be conducted by employees of the municipality, and the municipality may not require review by an external board.