Fairfax County, VA Fire Regulations: Smoke Detectors (2026)

Article 5 of Chapter 61, in Sections 61-5-1 and 61-5-2, operates in addition to the Virginia Uniform Statewide Building Code and governs both the installation and the maintenance of smoke detectors. Its defining feature is retroactivity: detectors are required in the listed structures regardless of when they were constructed, so a Fairfax County house that predates modern building codes is covered just like new construction. The list starts with any building containing one or more dwelling units, then adds hotels and motels regularly used, offered for, or intended to provide overnight sleeping accommodations for one or more persons.

The Article also reaches rooming houses, college dormitories, juvenile detention homes and group homes, and licensed adult care residences and day care centers. The county adopted these requirements under the state authority granted by Va. 2-922, and installation must follow USBC specifications. For rentals, the Article adds two landlord duties: an annual certification to tenants that the required detectors are present and working, and a repair clock, under which the landlord must service, repair, or replace a malfunctioning smoke detector within five days of receiving the tenant's written notice. Enforcement belongs to the Building Official, the Building Maintenance Official, or the Fire Official.