Annapolis, MD Building Safety: Carbon Monoxide Detectors (2026)
Key Facts
- Trigger
- Fuel-fired appliances in unit
- Device required
- Combination smoke/CO detector
- Applies to
- Rental dwelling units
- Enforcing agency
- Fire Department
- Owner duty
- Annual inspection and maintenance
Summary
Annapolis rental units with fuel-fired appliances must have a combination smoke and carbon monoxide detector, not just a smoke alarm.
It is the responsibility of the owner of each rental dwelling unit to install smoke alarms in accordance with this section in each rental dwelling unit... Where fuel fired appliances are used one smoke detector is required to be a combination smoke and carbon monoxide detector.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 2025 Update 2).
Full Breakdown
Under Annapolis City Code § 17.40.440(B), owners of rental dwelling units must install smoke alarms in each rental unit, and where fuel-fired appliances are used, one of the required smoke detectors must be a combination smoke and carbon monoxide detector. The Fire Department and Department of Planning and Zoning approve qualifying devices. Owners must also inspect and maintain alarms annually and certify working alarms to incoming tenants at every change of occupancy.
Violations & Fines
Rental units with gas furnaces, water heaters, ranges, or other fuel-fired appliances that lack a combination smoke/CO detector are out of compliance; landlords also risk violation for failing to certify working alarms at tenant turnover.
Frequently Asked Questions
Does every Annapolis rental need a CO detector?
Who has to install and maintain it?
Sources & Official References
Other rules in Annapolis
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