La Plata County, CO Building Safety: Carbon Monoxide Detectors (2026)
Key Facts
- Alarm location
- Exterior of the sleeping area, within 15 feet of each bedroom door
- Code section
- La Plata County Code § 18-36, IRC R311.3
- Adopted code
- 2024 International Residential Code with county amendments
- Effective date
- 6/30/2026 under Res. No. 2026-14
- Appeals
- Board of Review under § 18-35(113.7)
Summary
In unincorporated La Plata County, Colorado, the county's replacement Section R311.3 of the 2024 International Residential Code requires carbon monoxide alarms on the exterior of the sleeping area within 15 feet of each bedroom door. The rule is in § 18-36 and took effect with Res. No. 2026-14 on 6/30/2026.
The volumes, parts, chapters, and appendices of the 2024 International Residential Code, as published by the International Code Council, together with the amendments, additions, and deletions as set forth in this section are hereby adopted pursuant to C.R.S. § 30-28-201(1). ... Section R311.3 shall be deleted in its entirety and replaced as follows: R311.3 Location. Carbon Monoxide alarms shall be installed on the exterior of the sleeping area within 15’ of each bedroom door.
Full Breakdown
Section 18-36 adopts the volumes, parts, chapters, and appendices of the 2024 International Residential Code as published by the International Code Council, together with the amendments, additions, and deletions set out in the section, pursuant to C.R.S. § 30-28-201(1). Its contents list names Section R311 Carbon Monoxide Alarms among the amended provisions.
Section R311.3 is deleted in its entirety and replaced by a Location rule. Carbon Monoxide alarms must be installed on the exterior of the sleeping area within 15 feet of each bedroom door. The section carries the history line Res. No. 2026-14 and the effective date 6/30/2026. The same distance, 15 feet from each bedroom door, appears in the county's Section R310.3 for smoke alarms, so both alarm types are located by reference to the bedroom doors.
The Building Department enforces the rule through the permit process in Section 18-35. Section 105.1 requires an owner or authorized agent to apply to the building official and obtain a permit before constructing, enlarging, altering, or repairing a building or structure, and applicants file on the Building Department Permit Portal under Section 105.3. Section 110.3.8 makes the final inspection depend on completion of all building components, and Section 111.1.1 ties the certificate of occupancy to compliance with all required inspections. Section 104.1 gives the building official authority to interpret the Code and adopt policies and procedures clarifying its application.
A person aggrieved by a building official decision can appeal to the Board of Review under Section 113.7. Its members must be residents of La Plata County, Colorado, aged 18 or older on the effective date of appointment (Section 113.4), and its meetings are open to the public under the Colorado Open Meetings Law. Section 104.8 states that adopting the Code creates no duty to any person and no private right of action against La Plata County or its building official.
Violations & Fines
Violating a residential code provision, including an alarm placed outside the required location on a permitted project, is a violation of the Code. Under Section 18-35(114.4), conviction carries a fine of not more than $100, and each day a violation continues is a separate offense. The County Attorney can seek an injunction, mandamus, or abatement. Work begun before a required permit brings an investigation fee under Section 109.4, at a minimum equal to the permit fee.
Frequently Asked Questions
Where must carbon monoxide alarms go in unincorporated La Plata County?
Is the carbon monoxide alarm distance the same as the smoke alarm distance?
Who enforces the carbon monoxide alarm rule?
Does the rule cover Durango, Bayfield, or Ignacio?
Sources & Official References
Other rules in La Plata County
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