Utah Code § 17-79-503: Zoning district or land use regulation amendments.

(1) Only a legislative body may amend:

(a) the number, shape, boundaries, area, or general uses of any zoning district;

(b) any regulation of or within the zoning district; or

(c) any other provision of a land use regulation.

(2) A legislative body may not make any amendment authorized by this section unless the legislative body first submits the amendment to the planning commission for the planning commission's recommendation.

(3) A legislative body shall comply with the procedure specified in Section 17-79-502 in preparing and adopting an amendment to a land use regulation.