N.Y.C. Admin. Code § 28-325.1.1: § 28-325.1.1 Covered buildings and structures.

Such buildings or structures include:

1. Buildings constructed after the effective date of this article;

2. Alterations to existing buildings performed after the effective date of this article resulting in a plenum penetration by a chimney or vent serving an appliance with a heat input not greater than 350,000 Btu/hr.

(L.L. 2021/126, 11/7/2021, eff. 11/7/2022)