Carbon Monoxide Detector Laws for DC Hotels and Short-Term Rentals

Three instruments reach a District hotel room, and the District's own Construction Codes carry two of them. The Property Maintenance Code, 12-G DCMR Section 310, covers Group I-1, I-2, I-4 and R occupancies, which puts every hotel and motel inside it, and the trigger is a fuel-burning appliance, a fuel-burning fireplace, a forced-air furnace or an attached private garage. The Fire Code, 12-H DCMR, arrives at the same rooms from the other side: Section 915 for new work, and Section 1103.9 for buildings already standing, where existing Group R occupancies must be equipped with carbon monoxide alarms and Table 1103.1 lists that section as required rather than left to an official's judgment. Both are the 2017 District of Columbia Construction Codes, the 2015 International Code Council family as amended by Title 12 DCMR, in effect since 29 May 2020.

Short-term rentals sit on a third track. DC Official Code § 30-201.06, from the Short-Term Rental Regulation Act of 2018 (D.C. Law 22-307), requires a working carbon monoxide detector on every habitable floor with no fuel-burning trigger at all, and it applies only where the host is renting their own primary residence. The District's short-term rental definition excludes hotels, inns, motels, bed and breakfasts, boarding houses and rooming houses by name, so a professionally run property never reaches that statute and never escapes the other two.

Hotels, motels and commercial transient lodging are Group R-1 occupancies, and both District instruments describe their scope by occupancy group rather than by what the business calls itself. §310.1 covers Group I-1, I-2, I-4 and R; Fire Code §915.1.1 uses the same list; Fire Code §1103.9 uses it again for buildings already standing. Four conditions bring a building in: a fuel-burning appliance or fireplace in the room, a fuel-burning forced-air furnace serving it, fuel-burning equipment anywhere in the building with a communicating opening to the room, or an attached private garage. Age is not one of them. A District hotel built in 1926 and a District hotel opened last year are inside the same sections, with the older one allowed solely battery-operated alarms.

Short-term rentals on Airbnb, Vrbo and similar platforms answer DC Official Code § 30-201.06 instead, and only where the property is the host's own primary residence. The District defines "short-term rental" to exclude hotels, inns, motels, boarding houses, rooming houses and bed and breakfasts, so how a property is marketed online decides nothing.

The install-and-maintain duty is the operator's, and 12-G DCMR Section 310 sets it by occupancy rather than by business type. Where the building holds a fuel-burning appliance or fireplace, is served by a fuel-burning forced-air furnace, or has an attached private garage, detection is required in the guest rooms. Alarms must be listed to UL 2034, combination smoke and carbon monoxide alarms to UL 2034 and UL 217, and a detection system in place of single-station alarms to UL 2075 with the system built and maintained to NFPA 720. Section 310.4.1 wants primary power from the building wiring with a battery behind it wherever commercial power serves the building; battery-only alarms are permitted in a building without commercial power, and separately in any building that was lawfully occupied when the Construction Codes were adopted.

One duty that looks like it belongs to a hotel does not. Section 310.7 sets the start-of-tenancy check, the fifteen-day repair clock after written notice, and the annual inspection, and it applies to owners of rental units in a housing business. The Property Maintenance Code defines a housing business as a licensed rental operation and then says it "does not include any transient housing providers, such as a hotel, bed and breakfast, inn and motel, boarding house or rooming house". A District hotel therefore owes the detection, the listing standards, the placement and the maintenance, and owes none of Section 310.7's schedule. What replaces it is the Fire Code: Section 1103.9 makes the alarms mandatory in existing Group R buildings, and Section 1101.3 lets the fire code official issue an order with its own timetable.

Short-term rental hosts under DC Official Code § 30-201.06 answer a different and blunter rule: a working detector on every habitable floor while the rental operates, with no fuel-burning trigger to argue about.

The District writes placement for two different kinds of room and a hotel gets the second one. Section 310.2.1 handles dwelling units, where the alarm sits outside each separate sleeping area in the immediate vicinity of the bedrooms. Section 310.2.2 handles sleeping units, which is what a guest room is, and its rule is that "carbon monoxide detection shall be installed in sleeping units". The corridor is the exception, available only where the guest room and its attached bathroom contain no fuel-burning appliance and no forced-air furnace serves them. A room with a gas fireplace or on a fuel-fired forced-air system takes an alarm inside it. The Fire Code says the same thing in its own numbering at Section 915.2.2.

The exceptions that do exist are narrow and specific. Where the trigger is an attached private garage, no detection is required in a guest room more than one story above or below that garage, or where the garage connects to the building through an open-ended corridor, or where detection is already placed in an approved location between the garage openings and the rooms. Where the trigger is a forced-air furnace, detection in the first room or area served by each main duct leaving the furnace will do, provided the alarm signals transmit automatically to an approved location. An open parking garage built to Section 406.5 of the Building Code, or an enclosed one built to Section 406.6, is not a private garage for any of this.

Devices are listed to UL 2034, or UL 2034 with UL 217 for a combination unit, or UL 2075 for detectors in a system. New work runs off the building wiring with battery backup. Solely battery-operated alarms are allowed in a building that was already lawfully occupied when the Construction Codes took effect, which covers most of the District's older hotel stock, and the Fire Code repeats that permission at Section 1103.9.

Two officials can knock, not one. The Department of Buildings enforces the Property Maintenance Code, issuing a Notice of Infraction to the owner which is then filed with the Office of Administrative Hearings; operators who abate inside the deadline can take the matter to DOB's Alternative Resolution Team to reduce or drop the fine. The fire code official, in the Fire and Emergency Medical Services Department, enforces 12-H DCMR, and Section 1101.3 lets that official, in consultation with the building code official, order an owner into compliance with Chapter 11 on a stated schedule for both the permit application and the completed work.

The Fire Code also fixed a deadline the Property Maintenance Code never did. Section 1101.2.1 gave owners of existing buildings twenty-four months from the adoption of the Fire Code to file a complete permit application for the work Chapter 11 requires, and said in terms that missing that window is itself a violation. The 2017 Construction Codes took effect on 29 May 2020, so for a hotel that has never done the work the deadline is not approaching; it has passed. Extensions are available at the fire code official's discretion for good cause shown, in writing.

Short-term rental cases go elsewhere again. The Department of Licensing and Consumer Protection investigates § 30-201.06 violations and can refer them to the Office of the Attorney General.

The Property Maintenance Code route is financial. A DOB Notice of Infraction draws a fine set by infraction class under Title 16 DCMR, adjusted every January 1 by the Consumer Price Index under the DC Budget Support Act, and an owner who never abates can be billed for DOB's own abatement as a special assessment with a lien behind it.

The Fire Code route is not only financial, and this is the part the building-code reading of the District misses. Section 109.3 says that anyone violating the Fire Code, or failing to comply with an order issued under it, "shall be punished by a fine of not more than $300 or imprisonment for not more than 90 days, or both", and that each day the violation continues after notice is a separate offence. Section 109.4 keeps civil infractions available as an alternative sanction rather than the only one. The dollar figure is small and the exposure is not: the count runs per day, and it is a criminal conviction rather than a citation.

Short-term rental hosts face a different schedule again, with DLCP penalties up to $1,000 per offence and licence revocation for three months to three years.