N.Y.C. Admin. Code § 28-310.2: § 28-310.2 Definitions.

As used in this article, the following terms shall have the following meanings:

COVERED BUILDING. As it appears in the records of the department of finance: (i) a building that exceeds 25,000 gross square feet (2323 m

2

), (ii) two or more buildings on the same tax lot that together exceed 100,000 gross square feet (9290 m

2

), or (iii) two or more buildings held in the condominium form of ownership that are governed by the same board of managers and that together exceed 100,000 gross square feet (9290 m

2

).

Exceptions: The term "covered building" shall not include:

1. Real property classified as class one pursuant to subdivision 1 of section 1802 of the New York state real property tax law; or

2. Real property, not more than three stories, consisting of a series of attached, detached or semi-detached dwellings, for which ownership and the responsibility for maintenance of the HVAC systems and hot water heating systems is held by each individual dwelling unit owner, and with no HVAC system or hot water heating system in the series serving more than two dwelling units, as certified by a registered design professional to the department.