Nassau County enforces the New York State Uniform Fire Prevention and Building Code, which mandates sprinklers in new multifamily buildings over three stories, large single-family homes, and certain renovations exceeding fifty percent of value.
Nassau County and its towns and villages enforce the New York State Uniform Code, Title 19 NYCRR Parts 1219 to 1228, plus 2020 Building Code of New York State. Sprinklers under NFPA 13D or 13R are required in all new R-2 multifamily buildings over three stories, R-3 single-family homes over four thousand five hundred square feet in many villages, hotels, schools, healthcare, and substantial renovations. Existing buildings are generally grandfathered unless changed in use. Local fire marshals review plans together with town building departments. The Nassau County Office of Emergency Management coordinates between districts.
Construction without required sprinklers triggers stop-work orders, certificate of occupancy denial, and daily fines up to one thousand dollars under the Uniform Code.
See how Nassau County's fire sprinkler requirements rules stack up against other locations.
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