N.Y.C. Admin. Code § 28-103.30.2: § 28-103.30.2 Monitoring occupied multiple dwellings with permits for alteration or addition.

The real time enforcement unit shall monitor all occupied multiple dwellings with valid permits for (i) the alteration of 10 percent or more of the existing floor surface area of the building or (ii) an addition to the building. Owners of such buildings shall notify the department in writing at least 72 hours prior to the commencement of any work pursuant to such permits.

(L.L. 2017/188, 10/16/2017, eff. 2/13/2018; Am. L.L. 2017/233, 12/1/2017, eff. 12/1/2018)