Weld County, CO Fire Regulations: Smoke Detectors (2026)
Key Facts
- Smoke alarm source
- 2018 IRC (adopted)
- CO alarm law
- C.R.S. Article 38-45
- CO alarm placement
- Within 15 ft of bedrooms
- Trigger
- Sale, new tenant, alteration
- Applies to
- Fuel appliance or attached garage
Summary
Smoke alarms are required by the building code Weld County adopts (2018 International Residential Code). Colorado law separately requires a carbon-monoxide alarm within fifteen feet of every sleeping room when a home with fuel appliances or an attached garage is sold or rented.
The seller of each existing single-family dwelling offered for sale or transfer on or after July 1, 2009, that has a fuel-fired heater or appliance, a fireplace, or an attached garage shall assure that an operational carbon monoxide alarm is installed within fifteen feet of the entrance to each room lawfully used for sleeping purposes.
Full Breakdown
Weld County enforces the 2018 International Residential Code in unincorporated areas, which mandates smoke alarms in each sleeping room, outside each sleeping area and on every level of a dwelling. Colorado's statewide carbon-monoxide law (C.R.S. Article 38-45) adds a requirement triggered at sale, at a change of tenant, or when certain alterations occur, for homes that have a fuel-fired heater or appliance, a fireplace or an attached garage. Cities such as Greeley and Evans apply their own adopted codes. Landlords and sellers carry the compliance duty at the point of sale or new tenancy.
Violations & Fines
Selling or renting without required carbon-monoxide alarms can expose an owner to statutory liability; missing smoke alarms are a building-code violation cited at inspection or on complaint.
Frequently Asked Questions
Does Colorado require carbon-monoxide alarms in homes?
Where are smoke alarms required?
Sources & Official References
Other rules in Weld County
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