Manchester, NH Fire Regulations: Smoke Detectors (2026)

090 sets tiered requirements. Multi-unit dwellings need a smoke detection device in each dwelling unit, plus devices on every floor level of each common stairway and hallway, including basements. Single-family dwellings need a device outside each separate sleeping area near the bedrooms and on each story, including the basement. Any rental unit, whether in a multi-unit building or a single-family home, needs at least one smoke detection device regardless of which of the other subsections applies. Buildings that are four stories or more, or that have 12 or more dwelling units, must go beyond basic smoke detectors and comply with the Life Safety Code's detection, alarm and communication provisions, with those alarm systems installed and maintained under Fire Department rules and regulations, giving the Fire Department direct technical authority over larger buildings' alarm systems rather than the Planning and Community Development Department.

Subsection (E) requires that in multi-unit dwellings, any device installed after July 1, 1984 be powered by house electrical current rather than battery alone, a bright line date that still controls which units can rely on an older battery-only installation. 091 requires posting emergency contact information, including a code-enforcement contact at the Department, in a common area of buildings subject to inspection.