Carbon Monoxide Detector Requirements for Wyoming Hotels and Short-Term Rentals

Wyoming runs its carbon monoxide duty through lodging rather than through housing, which is the reverse of the pattern most states follow. A private Wyoming house carries no statewide alarm requirement and neither does a long-term rental. A hotel guest room can carry one.

The instrument is the fire code. Under W.S. 35-9-106(a), the Council on Fire Prevention and Electrical Safety in Buildings incorporates the 2024 International Fire Code and the 2024 International Building Code by reference at Chapter 1 Section 2 of its rules, adopted 28 June 2024, and the State Fire Marshal publishes the same date. The Council took the 2024 editions whole and amended nothing inside them, so the model text an operator can buy is the operative text in Wyoming.

W.S. 35-9-106(a)(i) sets what those standards cover, and subparagraph (B) is the one that matters to a building already standing: "the prevention of fire and the protection of life and property from fire and panic in all existing buildings". The duty does not wait for a permit.

From there the code does the work. IFC 915.1 sends new buildings to Section 915.1.1 and existing buildings to Section 1103.9. Section 915.2.2 places the detection in the sleeping units, which in a hotel means the guest rooms. IBC 310.2 lists hotels and motels used for transient occupancy in Group R-1, and Table 1103.1 marks row 1103.9 as required for R-1, so the occupancy question is answered in a table rather than inferred.

Group R-1 is the classification, and Table 1103.1 is where an operator can see it applied to the existing-building provision without taking anyone's word for it. Short-term rentals sit in the same code, because Section 915.1.1 works from the conditions in the building rather than from a licence.

Section 915.1.1 lists four triggers. A carbon monoxide source stands in the building. A carbon-monoxide-producing forced-air furnace serves the room or sits in it. An attached private garage adjoins. Or a carbon-monoxide-producing vehicle is used inside the building. An operator whose property has none of them is outside the trigger rather than exempt from the code, and that distinction matters at the next renovation, when a new gas appliance can move the building into scope without any rule changing.

The strongest evidence that lodging is covered is not in the fire code at all. It is in W.S. 35-9-118(a), where Wyoming writes out what its fire standards do not reach: farms and ranches of forty acres or more on deeded land, county memorial hospitals and state health care institutions and hospital districts and private hospitals, mines and their appurtenant facilities and oil field operations and petroleum refineries and liquefied petroleum gas facilities, railway shops and railway buildings and rolling stock and locomotive equipment, and automotive equipment employed by a railway, gas, electric or communication utility.

Read that list for what is missing. Lodging appears nowhere in it. A legislature that wrote five categories of exception and left hotels out of all five did not overlook them.

Establish which of the four Section 915.1.1 conditions the property meets, and write down the answer per building with the reason. In Wyoming that record does double duty, because the operator also has to know which authority will read it.

A property with no fuel-burning equipment, no attached garage and no vehicle brought indoors meets none of the triggers, and the honest answer for that operator is that Section 915.1.1 asks nothing today. Keep the finding rather than the conclusion. A propane fireplace added to a lobby, a shuttle parked inside for winter maintenance, or a garage bay built onto a wing will each change it.

Where the triggers are met, detection goes in the sleeping units under Section 915.2.2. For an existing building the route is Section 1103.9, reached through Table 1103.1 rather than through a permit, so an operator cannot wait for a remodel to trigger the obligation.

Keep the adoption date in the compliance file alongside the equipment records. Wyoming moved to the 2024 editions on 28 June 2024, and a property inspected against an earlier edition, or holding a compliance letter written before that date, is holding a document about a code that is no longer the one in force.

Wyoming adopted the 2024 International Fire Code and the 2024 International Building Code without amending either, so the placement and device language is the model text rather than a state variant. That is unusual enough to be worth relying on: an operator can read Section 915 as published and know it is what applies here.

Detection belongs in the sleeping units under Section 915.2.2. For a hotel that means the guest rooms themselves rather than a corridor device covering a floor, which is the substitution operators most often make and the one an inspector is most likely to find.

Existing buildings take the same detection requirement through Section 1103.9, reached from Table 1103.1 where row 1103.9 is marked required for Group R-1. The state's own child care rules, at Chapter 9 section 3(b) of the certification rules, are the one place Wyoming writes a detector requirement in its own words, and they bind certificate holders rather than lodging operators. A hotel operator reading those rules is reading the wrong instrument.

Two routes exist and they answer different buildings. Certified child care runs through Wyoming child care licensing. Lodging runs through the State Fire Marshal and the code the Council adopts.

Which office inspects a given hotel is a separate question, and W.S. 35-9-121(a) is where it is settled. The State Fire Marshal delegates complete authority to a municipality or county that applies for it, provided the local governing body has adopted standards by ordinance or resolution at least as stringent as the state's. A local programme therefore cannot lower the floor; it can only match or exceed it.

The delegation is conditional in two ways an operator should know about. The local body has to bring its standards current within six months of Wyoming adopting a new standard, and if it fails, enforcement "shall immediately revert to the department". Any fire or building inspector hired after 1 July 2010 has to hold certification from the International Code Council or the International Conference of Building Officials, and if a municipality loses its certified inspector, enforcement reverts to the state within 120 days of that departure.

The practical Wyoming question is rarely whether a duty exists. It is who is holding the clipboard this year, and that can change without the rules changing at all.

Wyoming publishes no stand-alone fine schedule for a missing carbon monoxide alarm. The state's own detector language sits in the child care certification rules, which reach certificate holders and carry licensing consequences rather than a fine table, and a hotel operator is not a certificate holder under them.

What reaches lodging is code enforcement. A fire code violation is handled through the inspection and correction machinery of whichever authority holds jurisdiction under W.S. 35-9-121(a), which for most Wyoming hotels is either the State Fire Marshal or a delegated municipality operating standards at least as stringent. That machinery produces correction orders, failed inspections and, where a local certificate of occupancy process exists, a hold on it.

The larger exposure for a hotel is civil rather than regulatory. A guest room that met one of the Section 915.1.1 triggers and had no detection is a documented departure from the code in force, and the adoption date makes the standard easy for a plaintiff to establish.

Where this answer runs out: whether Wyoming attaches a criminal classification or a monetary penalty to a fire code violation in Title 35 Chapter 9 was not established here. Sections 35-9-106, 35-9-118 and 35-9-121 were read to their text; the chapter's remaining penalty provisions were not. Reading Chapter 9 end to end would settle it.