When Are Sprinklers Required in an Existing Building Renovation Alteration in NYC - New York City

901.9.4 Additional requirements based on value of alterations. Fire protection systems shall be provided to buildings and spaces in accordance with the provisions of Sections 901.9.4.1 through 901.9.4.3.

901.9.4.1 Alterations requiring fire protection systems throughout a building. If the value of alterations to the building equals or exceeds 60 percent of the value of the existing building, or, in the case of a building containing 4 or more dwelling units, 50 percent of the value of the existing building, the entire building shall be made to comply with the fire protection requirements of this chapter as if it were hereafter erected.

901.9.4.2 Alterations requiring fire protection systems in the space being altered. If the value of alterations of a space is between 30 percent and 60 percent of the value of the existing building, or, in the case of a building containing 4 or more dwelling units, if the value of alterations of a space is between 30 percent and 50 percent of the value of the existing building, those portions of the building being altered shall be made to comply with the fire protection requirements of this chapter.

901.9.4.3 Additional requirements for buildings containing 4 or more dwelling units. For buildings containing 4 or more dwelling units, if the value of alterations to an existing space classified in Occupancy Group R-1 or R-2 exceeds 50 percent of the value of the space, such space shall be made to comply with the fire protection requirements of this chapter.

The VALUE is based on the building as listed by the Department of Finance.