Yavapai County, AZ Building Safety: Carbon Monoxide Detectors (2026)
Key Facts
- Alarm standard
- IFC Section 1103.9 or IRC Section R311
- Administered by
- local fire district having authority
- Applies to
- dwellings in unincorporated Yavapai County
- Enforcement
- PMC notice of violation + Hearing Officer
- Governing ordinance
- Ordinance No. 2025-9 Section 705.1
Summary
Yavapai County requires carbon monoxide alarms in dwellings under Property Maintenance Code Section 705.1, pointing owners to International Fire Code Section 1103.9 or, for homes covered by the residential code, to Section R311. The local fire district having jurisdiction administers and can amend the specific installation requirements for the property.
Section 705: Carbon monoxide alarms and detection. [F] 705.1: General is hereby amended and revised to read as follows: [F] 705.1: General. Carbon monoxide alarms shall be installed in dwellings in accordance with Section 1103.9 of the International Fire Code, as amended and adopted by the fire district having authority, except that alarms in dwellings covered by the International Residential Code shall be installed in accordance with Section R311 of that code.
Full Breakdown
1 of Ordinance No. 9 of the International Fire Code, as amended and adopted by the fire district having authority, except that alarms in dwellings covered by the International Residential Code shall be installed in accordance with Section R311 of that code. The county deliberately routes the technical standard to the local fire district rather than setting its own alarm specifications: the same chapter deletes Section 704, the general fire-protection-systems section, in its entirety because fire protection systems are regulated by the fire district having authority.
In practice that means a homeowner in unincorporated Yavapai County needs to check with whichever fire district serves the property, since coverage and any local amendments vary by area within the county. 6. Ordinance No. 2025-9 repealed and replaced the county's prior 2019-8 property maintenance ordinance in its entirety, so this alarm mandate is a fresh 2024-code adoption rather than a carryover rule.
Violations & Fines
Failing to install a required carbon monoxide alarm under Section 705.1 is enforced like any other Property Maintenance Code violation: the county serves a notice of violation, and continued noncompliance can go to the Hearing Officer for fines of up to $750 a day for an individual or $10,000 a day for a corporation under Section 107.6, plus the underlying duty to install the alarm remains.
Frequently Asked Questions
Does Yavapai County require carbon monoxide alarms in homes?
Who sets the exact installation requirements for CO alarms here?
What happens if I don't install a required CO alarm?
Sources & Official References
Other rules in Yavapai County
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