EBC 1004 — Fire Protection
New York City Administrative Code (current through L.L. 2026/147, enacted September 12, 2026, and amendments effective through October 10, 2026) · NYC Existing Building Code § EBC 1004 · Takes effect
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Section EBC 1004: Fire Protection
1004.1 Change of occupancy classification or change of use within the same Occupancy Group. Fire protection systems governed by Chapter 9 of the New York City Building Code shall be provided in accordance with Sections 1004.1.1 and 1004.1.2. 1004.1.1 Change in the main use or dominant occupancy of the building. Where there is a change to the main use or dominant occupancy of the building, the entire building shall comply with the requirements of Chapter 9 of the New York City Building Code as if hereafter erected. 1004.1.2 Partial change of occupancy classification or a change in use that triggers more restrictive fire protection requirements in Chapter 9 of the New York City Building Code. Where a portion of an existing building is changed to a new occupancy classification or to a use that requires compliance with a more restrictive fire protection requirement as per Chapter 9 of the New York City Building Code, such portion of the building shall comply with the requirements of Chapter 9 subject to the separation conditions as indicated in Sections 1004.1.2.1 and 1004.1.2.2. 1004.1.2.1 Change without separation. Where the portion of the existing building subject to the change is not separated from the remainder of the building with fire barriers or horizontal assemblies having a fire-resistance rating as required in the New York City Building Code for the separate occupancy or use, the entire nonseparated area shall comply with all of the requirements of Chapter 9 applied throughout the nonseparated area for the most restrictive occupancy classification or use in the nonseparated area and with the requirements of this chapter. 1004.1.2.2 Change with separation. Where the portion of the existing building subject to the change is separated from the remainder of the building with fire barriers or horizontal assemblies having a fire-resistance rating as required in the New York City Building Code for the separate occupancy, that portion shall comply with all of the requirements of Chapter 9 for the new occupancy classification or use and with the requirements of this chapter.