Cook County, IL Building Safety: Carbon Monoxide Detectors (2026)
Key Facts
- Location
- One per bedroom in the mobile home
- Installed by
- Tenant, per Fire Prevention Authority standards
- Penalty
- $500-$1,000 fine or up to 6 months jail
- Applies in
- Unincorporated county & non-adopting municipalities
- Citation
- Cook County Code § 110-151(10)
Summary
Cook County requires tenants in licensed mobile home parks to install a working carbon monoxide detector, plus a smoke detector, in every bedroom: mandatory in unincorporated Cook County and in municipalities without their own mobile home ordinance.
Mobile homes shall each be equipped by the tenant with fire extinguishers in working order. The type and location of each extinguisher shall be determined by the Fire Prevention Authority having jurisdiction in that community. Additionally, a smoke detector and a carbon monoxide detector, in working order, shall be installed by the tenant in each bedroom in the mobile home, in accordance with standards approved by the Fire Prevention Authority having jurisdiction in that community.
Full Breakdown
Cook County's mobile home ordinance requires every licensed mobile home site to have a working smoke detector and a working carbon monoxide detector installed by the tenant in each bedroom, meeting standards set by the local Fire Prevention Authority (Code § 110-151(10)). The rule sits inside the article governing mobile homes and mobile home parks, which under § 110-34 applies in unincorporated Cook County and in any municipality that has not adopted its own mobile home ordinance, not countywide. Violations of the article carry a fine of $500.00 to $1,000.00, up to six months imprisonment, or both, with each day of noncompliance treated as a separate offense (Code § 110-33).
Violations & Fines
No working carbon monoxide or smoke detector in each bedroom of the mobile home; enforced by the County Department, punishable by a $500-$1,000 fine, up to 6 months imprisonment, or both, with each day a separate offense.
Frequently Asked Questions
Does Cook County require carbon monoxide detectors in mobile homes?
Where does this mobile home CO detector rule apply?
What's the penalty for not having one?
Sources & Official References
Other rules in Cook County
Compare Cook County to another location·View the Illinois building safety overview
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