Mount Vernon, NY Building Safety: Carbon Monoxide Detectors (2026)

Section 267-98K requires carbon monoxide detectors in all dwelling units that contain a fuel-burning appliance, system, or other source of carbon monoxide, with the type and installation subject to the Building Inspector's approval, wherever the unit is used as a short-term rental under Article XV. The requirement sits beside the article's other mandatory life-safety equipment for short-term rentals: a smoke detector in and outside each sleeping room (Section 267-98J) and at least one functioning, inspected fire extinguisher in the dwelling unit (Section 267-98L). Compliance is not left to self-certification.

Section 267-100 requires the Building Department and Fire Department to inspect the property at the time of the initial short-term rental application and again before any permit renewal, and either department may conduct further periodic inspections to confirm the unit remains in compliance. If an inspector determines in writing that the unit, including its carbon monoxide protection, is out of compliance, the owner or tenant must stop using it as a short-term rental until every noncompliant item is corrected and must then apply for reinspection with the Building Department or Fire Department, subject to an additional fee under the City Fee Schedule, before the rental may resume (Section 267-100).

The applicant's original notarized certification, required at the time of permit application, must also attest that the property is fit for human habitation and safe (Section 267-97B(5)(d)[2]).