Utah Code § 10-8-53.5: Regulation of carbon monoxide detectors -- Enforcement against occupant only.

(1) Subject to Subsection (2), a municipality may not enforce an ordinance, rule, or regulation requiring the installation or maintenance of a carbon monoxide detector in a residential dwelling against anyone other than the occupant of the dwelling.

(2) Subsection (1) may not be construed to affect:

(a) a building permit applicant's obligation to comply with a building code that requires the installation of a carbon monoxide detector as part of new construction; or

(b) a municipality's ability to require a building permit applicant to comply with a building code that requires the installation of a carbon monoxide detector as part of new construction.