CO Detectors in Virginia: Landlord and Tenant Duties Explained

Last verified: August 24, 2026

Virginia carbon monoxide detector laws are implemented through a combination of landlord-tenant statute and statewide construction code pathways. Virginia Code section 55.1-1229 requires a landlord to install a carbon monoxide alarm within 90 days after a written tenant request if one is not already installed, while section 55.1-1227 prohibits tenant tampering or removal of required alarms.

Technical trigger and placement duties are reinforced through Virginia Construction Code and related residential-code provisions for covered Group I and Group R or dwelling contexts. This creates broad applicability across homes, rentals, and lodging scenarios where code conditions are met.

Virginia operators should maintain written request records, installation documentation, and section-linked inspection notes to reduce dispute and enforcement risk. Tracking local code-edition effective dates in each jurisdiction file further supports compliance readiness.

Quick Safety Summary

CO detector requirements for Virginia
Applies to homes?	Yes
Applies to rentals?	Yes
Applies to hotels/STRs?	Yes
Applies to schools?	Yes, under a condition
Applies to workplaces?	No

Schools and workplaces

Schools: it depends, and the test is one you can apply to the building itself. Virginia wrote its own Group E section and put a trigger in it that the model code has nowhere. 13VAC5-63-240 deletes the model 915.2.1 and 915.2.2 and substitutes Section 915.2 headed "Group I or R", then adds Section 915.3 headed "Group E": classrooms in Group E occupancies located in a building containing a fuel-burning appliance, or in a building that has an attached garage OR SMALL ENGINE OR VEHICLE SHOP, shall be equipped with single-station carbon monoxide alarms listed as complying with UL 2034 and installed and maintained in accordance with NFPA 720. The shop limb is Virginia own and it is aimed squarely at a school. Note that the trigger is the building rather than the room, so a classroom with nothing in it is covered when the boiler is elsewhere in the building. What does not follow is the retrofit: 13VAC5-52-230 reads "Delete Chapter 11 in its entirety", effective 18 January 2024, so an existing school acquires the duty through construction or substantial renovation and not otherwise. Both halves are current and the transition behind them has closed. The 2021 Virginia Uniform Statewide Building Code took effect on 18 January 2024, and for the first year a permit applicant could elect the 2018 or the 2021 code; that window shut on 18 January 2025, so every permit since has issued under the 2021 USBC and there is no longer a second answer to give. The 2024 development cycle began in the first quarter of 2025 and has produced no adopted code, so Virginia's own Group E section stands as written.

Workplaces: Virginia places no carbon monoxide detection duty on an office, shop or other workplace. Federal and state occupational rules set an exposure limit for carbon monoxide in air; they do not require a detector to be installed, and this row is about installation. Virginia rewrote Section 915 into two occupancy sections and neither is a workplace. 13VAC5-63-240 substitutes Section 915.2 headed "Group I or R" and adds Section 915.3 headed "Group E", with no Group B, F, M or S anywhere in the rewritten section. The Statewide Fire Prevention Code cannot supply a route either: 13VAC5-52-230 deletes IFC Chapter 11 in its entirety, and Section 101.2.2 provides that a maintenance requirement is not an installation requirement. Code of Virginia 55.1-1229(E), the third instrument, runs to rental dwelling units on a tenant written request.

When Are CO Alarms Required?

Buildings with fuel-burning appliances
Buildings with attached garages
New construction
Virginia Code section 55.1-1229 creates a written-tenant-request trigger for landlord installation if an alarm is not already present.
Virginia code and construction-code pathways apply by occupancy type and locally enforced edition.

Where to Install CO Alarms

Outside each separate sleeping area in the immediate vicinity of bedrooms under residential-code pathways.
Virginia sets no per-storey installation rule, and the hedge that used to sit here was covering for that. Section R315.3 of the residential code places alarms by sleeping area and not by storey, and Virginia's replacement of IBC Section 915 for Group I and Group R uses a storey only in an exception: a sleeping unit needs no alarm where it is more than one storey above or below any storey containing a fuel-burning appliance. Storey counting in Virginia takes alarms away rather than adding them.
Additional Group I and Group R placement requirements apply through Virginia Construction Code occupancy provisions.

For detailed placement guidance beyond legal requirements, see where to place carbon monoxide detectors.

Device Requirements

Carbon monoxide alarms listed to applicable recognized standards such as UL 2034 in cited Virginia code pathways.
Installation follows code text and manufacturer instructions in the locally enforced edition.
Power and interconnection configuration can vary by occupancy and code section, so local edition confirmation is required.

Landlord and Tenant Responsibilities

Landlord: Must install an alarm within 90 days of written tenant request if no alarm is already installed and maintain compliance with applicable code obligations. Provision: Group I and Group R carbon monoxide detection provisions including IBC Section 915 pathways.

Tenant: Must not remove tamper with or disable required alarms under Virginia Code section 55.1-1227. Provision: 55.1-1227.

Virginia enforcement is local, so operators should verify the active code edition used by each jurisdiction.
Virginia is one of four states in the fifty-one that answers no to the existing-building question, with Colorado, Indiana and Nevada, and it is worth seeing why rather than taking the answer on trust, because it is a deliberate drafting choice rather than a gap. Most states reach a building already standing through Chapter 11 of the International Fire Code, whose Section 1103.9 orders carbon monoxide detection into existing Group R occupancies. Virginia does not have that chapter. 13VAC5-52-230, effective 18 January 2024 under the authority of Va. Code 27-97, is one sentence long and reads "Delete Chapter 11 in its entirety." The two no-installation rules at Section 101.2.1 and 101.2.2 close the same door from the administrative end, and Section 101.5 stops a locality reopening it, since local fire regulations may be more restrictive but may not affect the manner of construction. So an operator of an older Virginia hotel carries a duty to keep any existing alarm working and no duty to fit one that was never there.
The exception runs through the tenancy rather than through the code, and it belongs to the tenant rather than to an inspector. Va. Code 55.1-1229(E) lets a residential tenant put a written request to the landlord and require an alarm to be installed within 90 days, whether or not the dwelling ever had one. That is a retrofit route no building code in Virginia creates, and it is unavailable to a hotel guest, who has no tenancy to attach it to.

Full Virginia landlord and tenant carbon monoxide duties, with citations

Enforcement

Enforced by: Local building and fire officials administering statewide code in their jurisdictions, with landlord-tenant remedies available under Virginia Code.

Enforcement typically occurs:

During permit and inspection workflow for construction-code scenarios.
During rental compliance disputes when written request and installation obligations under section 55.1-1229 are at issue.

What a Tenant Can Do in Virginia

When a carbon monoxide alarm stops working in a rented home in Virginia, these are the five routes a tenant can take and where each one comes from.

"Via general law" means the Virginia carbon monoxide statute itself is silent and the remedy comes from the state's landlord-tenant law instead. The remedy is available even though the alarm rule does not contain it.

Tenant remedies for a defective carbon monoxide alarm in Virginia, with the citation or the body of law searched for each.
Rent withholding	Via general lawVa. Code 55.1-1244. Court-supervised rather than self-help. The tenant files an assertion in general district court and pays rent into escrow, and the court can reduce rent, order repairs, release the escrow to either side, or terminate the tenancy. The initial hearing falls within 15 days of service, sooner where emergency conditions are alleged, and a condition still unremedied six months after the escrow opens sends the whole accumulated fund to the tenant if the landlord made no reasonable attempt.
Repair and deduct	Via general lawVa. Code 55.1-1244.1. The highest dollar floor in the fifty-one: the greater of one month's rent or $1,500, where Hawaii's floor is $1,000, Texas's and Maine's $500 and Arizona's and Missouri's $300. That figure matters most to a tenant on a low rent, who gets more here than anywhere else. It is not the highest ceiling, which is Massachusetts at four months' rent, and five states cap nothing at all. Virginia pays for that with conditions, requiring a licensed contractor and an itemized statement with receipts to the landlord, so it is not a remedy a tenant can perform with their own labour.
Right to end the lease	Via general lawVa. Code 55.1-1234. The notice does double duty and has to be written that way. It specifies the acts and omissions constituting the breach, gives the landlord 21 days to remedy, and states a termination date no less than 30 days after receipt. Damages, injunctive relief and attorney fees ride alongside, with fees available unless the landlord shows its conduct was reasonable.
Notice the tenant must give	Yes, in the CO ruleVa. Code 55.1-1229(E). A written request, not a notice of breach. Nothing has to be defective and no waiting period applies, which makes this the lowest threshold anywhere here for putting a landlord under a carbon monoxide duty. The trade is that the landlord may charge a reasonable fee for the equipment and the labour, so a Virginia tenant can compel installation but not for free.
Landlord cure period	Yes, in the CO rule, 21 daysVa. Code 55.1-1234(A). Twenty-one days to remedy, on the general breach clock. 55.1-1234(A) lets a tenant facing a material noncompliance affecting health and safety serve written notice "stating that the rental agreement will terminate upon a date not less than 30 days after receipt of the notice if such breach is not remedied in 21 days". A carbon monoxide alarm the landlord installed and that has since stopped working is an ordinary breach and runs on that clock. This column carried 90 days and cited 55.1-1229(E) until 2026-08-26. That subsection sets a different clock for a different thing: "Upon written request of a tenant in a dwelling unit, the landlord shall install a carbon monoxide alarm in the tenant's dwelling unit within 90 days." It is an installation window for an alarm that does not exist yet, and it says nothing about maintaining or repairing one that does. Read as a cure period it made Virginia the slowest state in the fifty-one by a factor of three, when on the clock that actually governs a dead alarm it is faster than California, Maryland, Ohio and Vermont. Repair-and-deduct opens on its own shorter clock, 14 days under 55.1-1244.1.

Applies to every row above:The VRLTA derives from the Uniform Residential Landlord and Tenant Act and keeps its remedy architecture, so the general columns below sit where a URLTA reader expects them. What Virginia adds is unusual and changes how this row should be read: 55.1-1229(E) lets a tenant ask for a carbon monoxide alarm that does not exist yet, rather than only complaining about one that is broken. Two clocks follow from that and they point opposite ways. Installation on request runs 90 days, the longest landlord window in the fifty-one, while a landlord-installed alarm that stops working is an ordinary breach carrying 21 days under 55.1-1234 and 14 days under 55.1-1244.1. A Virginia tenant with no alarm therefore waits longer than one with a broken alarm, and the landlord may bill for the installation either way.

Remedies last checked 2026-08-03. Compare Virginia with the other states.

What Virginia Requires in Lodging

The Virginia carbon monoxide requirement reaches hotels and short-term rentals.

Hotels already standing: not covered. Virginia imposes this on what gets built and nothing on a hotel that was standing when the rule took effect, so an operator of an older property carries no retrofit duty from it.

Operator duty: A Virginia lodging operator is reached by the construction code when they build or substantially renovate, and by the fire code only to keep working what the construction code once required. The Virginia Uniform Statewide Building Code carries a Section 915 of its own rather than the model one. Virginia's 915.2 is headed "Group I or R" and requires single-station carbon monoxide alarms, listed to UL 2034, wherever such an occupancy sits in a building containing a fuel-burning appliance or having an attached garage, with no separate rule for dwelling units and none for sleeping units. The trigger is the building's rather than the room's, and the only escape for an individual guest room needs three things together: more than one storey of separation from the appliance or garage, no duct work or ventilation shaft connecting them, and a common area carbon monoxide alarm system in the building. After that the Statewide Fire Prevention Code takes over, and it is written to add nothing: 13VAC5-52-10 at Section 101.2.1 provides that the code's provisions "shall not require modifications or installation of construction elements or systems required or regulated by the applicable building code" and that this is "understood to not require installation if no system, appliance, device, etc. was previously installed", with 101.2.2 adding that a maintenance requirement "shall not be construed to be a requirement for installation through this code". The Virginia Maintenance Code says the same thing from the other side, adding Section 305.7 to the property maintenance code in four words of duty, that carbon monoxide alarms "shall be maintained as approved".

Full Virginia hotel and short-term rental requirements

Penalties for Non-Compliance

Virginia states the consequence in the building code's own penalty section rather than beside the carbon monoxide requirement, which is why a search of the landlord-tenant statutes finds nothing. Va. Code 36-106 makes it unlawful to violate any provision of the Uniform Statewide Building Code, deems the violation a misdemeanor, and sets a fine of not more than $2,500. If the violation is still uncorrected at conviction the court orders it abated, ordinarily within six months, and each day it continues after that period counts separately. The USBC is the instrument that carries Section 915 into Group R occupancies, so a carbon monoxide failure in a covered building is inside 36-106. The tenancy route is separate and belongs to the tenant rather than to an inspector: under Va. Code 55.1-1229(E) a written request obliges the landlord to install an alarm within 90 days, and the ordinary landlord-tenant remedies stand behind that if it is ignored. For a building, the pressure is the local building official's permit and certificate of occupancy rather than a penalty, and for an existing building that never had an alarm there is no installation duty to enforce at all, because the Statewide Fire Prevention Code deletes the retrofit chapter outright.

Va. Code 36-106 for the misdemeanor, the $2,500 cap and the per-day rule after the court-ordered abatement period. Va. Code 55.1-1229(E) and 55.1-1227 are the tenancy route and state no penalty of their own.

Additional Notes

Virginia compliance should combine statute and code references because duties arise from both tracks.
Owners should preserve written request dates and response dates for section 55.1-1229 compliance.

Local Rules That Differ From State Law

At least one Virginia municipality sets CO requirements that go beyond the statewide rule. Where your property sits decides which applies, and the stricter one governs.

Virginia Beach

Virginia Beach is the most thoroughly worked short-term rental inspection scheme in this dataset. Section 241.2(13) of the zoning ordinance makes the owner give zoning inspectors permission to enter at any time during the permitting process, and then says exactly what they look at. The alarms must be installed to the building code in force when the property was built and interconnected; a property built before interconnection was required instead needs at least one smoke alarm on every floor and in the areas next to all sleeping rooms, audible in all of them. Then the part that has no equivalent elsewhere: every smoke alarm and carbon monoxide detector must have been inspected within the last twelve months and be in good working order. A fire extinguisher must be inside the unit, in plain sight, and its location recorded. The cadence is unusual too and worth knowing before anyone assumes annual inspections. The city inspects when an operator first applies and then every five years. In the intervening years the owner files an attestation confirming compliance, and the planning department may inspect before renewal anyway if it has good cause to believe a safety violation exists. So the twelve-month inspection duty is the operator's own, evidenced yearly by signature and checked by the city on a five-year cycle.

Virginia Beach City Zoning Ordinance Section 241.2(13), short-term rental conditional use conditions Checked 2026-08-10.

Alexandria

Alexandria wants pictures. Section 7-1404(10) makes an application for a short-term residential rental permit include photographs of, and a signed certification about, all safety equipment, naming smoke detectors, fire extinguishers and carbon monoxide detectors, confirming that each is installed and in compliance with city law. Paragraph (11) does the same for the posted Good Neighbor Guide. Documentary proof at the application stage is a cheaper instrument than an inspection and a harder one to satisfy on paper alone, because a photograph of an empty ceiling is a photograph of an empty ceiling. It is the only permit scheme here that asks for images rather than a checkbox.

Alexandria Zoning Ordinance Section 7-1404(10), short-term residential rental permits Checked 2026-08-10.

Richmond

Richmond makes the operator draw the detectors on a plan. Section 30-697.1 of the zoning code sets out what a short-term rental application must contain, and the floor plan has to mark the location of emergency egress and rescue openings and the location of fire and carbon monoxide detectors, with smoke detectors required to comply with the current edition of the Uniform Statewide Building Code. Section 30-698.3 applies the same approach to emergency, transitional and permanent supportive housing, listing smoke alarms, carbon monoxide alarms and fire extinguishers among the matters an approval must address alongside ingress, egress and evacuation routes. Neither section moves the state standard; both make the city hold a drawing of where the devices are supposed to be, which is what any later enforcement is measured against.

Richmond City Code Section 30-697.1(4)(d), short-term rental regulations, with Section 30-698.3(5), emergency and supportive housing approvals Checked 2026-08-10.

What was checked:Every Virginia finding below sits in a zoning ordinance, and that is a consequence rather than a coincidence. The Uniform Statewide Building Code occupies construction across the whole state, so a Virginia locality with something extra to say about carbon monoxide cannot say it in a building regulation. All three cities below say it instead as a condition of the permit that lets a dwelling be used as a short-term rental, which is land use and outside the code's reach. New Jersey, Massachusetts and Louisiana produced the same displacement for the same reason, and it is now the most reliable rule of thumb in this survey: in a strong statewide code state, read the licensing and zoning chapters, not the building chapter. Five municipalities read on 2026-08-10: Virginia Beach, Richmond, Norfolk, Alexandria and Chesapeake. Norfolk and Chesapeake carry nothing, both control-tested. Loudoun County, Arlington, Fairfax County and the Shenandoah and Blue Ridge tourist counties were not searched, and neither were the Eastern Shore beach towns.

Local sweep last reviewed 2026-08-10.

Official Sources & References

Virginia Code section 55.1-1229 , 55.1-1229 (state code, accessed 2026-02-17)
Landlord installation duty after written tenant request when alarm is not already installed.
Virginia Code section 55.1-1227 , 55.1-1227 (state code, accessed 2026-02-17)
Tenant duties including prohibition on tampering or removal of alarms.
2018 Virginia Construction Code , Group I and Group R carbon monoxide detection provisions including IBC Section 915 pathways (building code, accessed 2026-02-17)
Statewide technical code source used by local jurisdictions for covered occupancies.
Virginia Uniform Statewide Building Code, Section 915 Carbon Monoxide Detection, as amended , 915.1 through 915.1.6 as adopted; 915.2 "Group I or R" as substituted; 915.3 "Group E" (building code, accessed 2026-08-10)
Read in the Virginia jurisdiction view on 2026-08-10, and it is the reason a national summary of Section 915 misleads here. Virginia deletes the model's 915.2.1 for dwelling units and 915.2.2 for sleeping units and substitutes a single 915.2 headed "Group I or R", requiring single-station carbon monoxide alarms in those occupancies "located in a building containing a fuel-burning appliance or in a building that has an attached garage", listed to UL 2034 and installed to NFPA 720. The trigger is the building's rather than the room's, and the sole exception needs three conditions together: the unit more than one storey above or below any storey with the appliance or garage, not connected to it by duct work or ventilation shafts, and the building equipped with a common area carbon monoxide alarm system. An open parking garage as defined in Chapter 2, or an enclosed one ventilated to Section 404 of the IMC, is not an attached garage.
Virginia Statewide Fire Prevention Code, 13VAC5-52 , 13VAC5-52-230 IFC Chapter 11; 13VAC5-52-10 Section 101.2.1, 101.2.2 and 101.5; 13VAC5-52-20 Section 102.2 and 102.3 (fire code, accessed 2026-08-08)
The instrument behind the existing-buildings answer, and the reason it is no. 13VAC5-52-230 is a single sentence, "Delete Chapter 11 in its entirety", effective 18 January 2024 under Va. Code 27-97, which removes the International Fire Code's retrofit chapter and Section 1103.9 with it. Section 101.2.1 provides that the code shall not require installation where no system was previously installed under the building code, and 101.2.2 that a maintenance requirement is not an installation requirement. Section 102.2 and 102.3 apply the maintenance duty to pre-1973 and post-1973 buildings alike, in both cases only to what was "provided and approved when constructed". Section 101.5 permits stricter local fire regulations but not ones affecting the manner of construction. Note that 13VAC5-51 is the repealed predecessor chapter and still appears in search results.
Virginia Maintenance Code, 13VAC5-63 Part III , 13VAC5-63-520 subsection C.1, adding Section 305.7 to the property maintenance code (building code, accessed 2026-08-08)
Part III of the Uniform Statewide Building Code, the maintenance half. Its whole carbon monoxide provision is Section 305.7, "Carbon monoxide alarms shall be maintained as approved", which is a duty to keep a device working and not a duty to fit one. Read with the fire code's two no-installation rules, this is what makes Virginia's answer on existing buildings a considered no rather than an unanswered question.
2018 Virginia Residential Code , Residential carbon monoxide alarm location framework at Section R315 of the Virginia Residential Code, the 2021 edition of which took effect on 18 January 2025 for new permit applications. Virginia amends the section rather than taking it whole. Its R315.1.1 allows the alarm to be hard wired, plug-in or battery type provided it is listed as complying with UL 2034, where the model text speaks only to listing. The number is edition-bound and Virginia is on a 2021-based edition, so R315 is right; the 2024 International Residential Code moved carbon monoxide alarms to Section R311 and gave R315 to sleeping lofts, which means a stale reference will resolve to a real section about the wrong subject instead of failing. (building code, accessed 2026-02-17)
Residential placement and trigger framework in Virginia local code enforcement context.

Disclaimer: This page explains the law as it stood on August 24, 2026. It is general information, not legal advice, and reading it creates no attorney-client relationship. Requirements vary by city, county and building type, and statutes and codes are amended: confirm the current text with the issuing authority before acting on it. Each requirement here cites the instrument it comes from, so you can check it at source.

Frequently Asked Questions

What Virginia statute creates the landlord installation trigger?

Virginia Code section 55.1-1229 is the key statute for landlord installation timing because it requires installation within 90 days after a written tenant request if no alarm is already installed. This is a concrete legal trigger, not only a best-practice recommendation. Property managers should log request receipt date, installation completion date, and any follow-up communication in the same record. Virginia files with clear timeline evidence are easier to defend during disputes and inspection-related reviews.

What does Virginia code say about tenant tampering?

Virginia Code section 55.1-1227 prohibits tenant removal tampering or disabling of required alarms. This means compliance controls should include tenant communication and documented move-in condition checks, not only owner installation activity. Landlords should keep lease language aligned with the statute and create a clear reporting path for device failures. Virginia operators who document notices and repairs consistently reduce downstream legal and operational risk. Written tenant acknowledgments should be stored with move-in documentation.

Which Virginia occupancies are covered by code-based CO detection?

Virginia Construction Code pathways include coverage for specified Group I and Group R occupancies, while residential code sections apply placement rules in covered dwelling contexts. Because local enforcement applies the statewide code edition by jurisdiction, operators should confirm occupancy classification and active edition before finalizing scope decisions. One generic policy is rarely enough across mixed portfolios. Virginia compliance packets should include occupancy mapping and section citations for each property. This should include dated review notes for any mixed-use occupancy determination.

In Virginia, which enforcement sequence should teams map before assigning penalty risk?

In the cited Virginia sections, enforcement is generally through local code remedies and landlord-tenant legal remedies rather than one stand-alone statewide fine table dedicated only to carbon monoxide alarms. That still creates meaningful exposure when requests are ignored, alarms are missing, or tampering issues remain unresolved. Teams should treat corrective action timelines as high priority and preserve dated proof of completion. Virginia notices should cite sections 55.1-1229 and 55.1-1227 where relevant.

For Virginia all-electric homes, which trigger analysis is required before exemption?

Not always. Virginia applicability depends on occupancy and code-trigger analysis, including attached-garage and other risk conditions in locally enforced code sections. Owners should avoid automatic exemptions based only on utility type and request clarification when scope is unclear. Documenting exemption reasoning with the local authority and governing section text is the safer approach. Virginia records should store that reasoning with turnover and maintenance documents. Keep the approving authority and date in the same record.

Which Virginia policy control differs most from Maryland in mixed-state portfolios?

Virginia sets landlord-request statute triggers under 55.1-1227 and 55.1-1229 alongside code-based occupancy enforcement, while Maryland portfolios can follow a different statutory and implementation mix. Regional teams should use separate Mid-Atlantic matrices rather than one shared template. For side-by-side planning, review Maryland CO detector laws and compare trigger timing, role allocation, and documentation controls. Virginia teams should keep request-trigger logs distinct from Maryland workflow records. Include jurisdiction-specific enforcement contacts in each state packet.

Practical CO Detector Guides

Beyond legal requirements, these guides help you choose, install, and maintain CO alarms:

Where to place carbon monoxide detectors, room-by-room placement recommendations
CO detector beeping patterns, what different alarms mean
What to do if your detector goes off, emergency response checklist
CO resources and links, official agencies and safety information