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NYC Building Code

§ 901.9.4.1 — § 901.9.4.1

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What is NYC BC § 901.9.4.1?

Quick Answer

This section mandates that if the cost of alterations to a building reaches or exceeds 60 percent of its value, or 50 percent for buildings with four or more dwelling units, the entire building must comply with current fire protection requirements. Applies to building owners undertaking significant alterations.

General informational summary. Not legal advice for your situation. Consult an attorney before acting on any specific matter.

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901.9.4.1 Alterations requiring fire protection systems throughout a building.

BC § 901.9.4.1

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.

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