N.Y.C. Admin. Code § EBC D307: D307 Sanitation and health (MDL 3, Title 3).

D307.1 Water closet and bath accommodations (MDL 76).

D307.1.1 Opening to kitchen (MDL 76(1)(c)).

No toilet room or bathroom shall open onto any kitchen or kitchenette in accordance with Section 1210.4 of the New York City Building Code. Alterations to the layout of a dwelling unit shall not increase the degree of noncompliance with this requirement.

Exception: In multiple dwellings erected or converted prior to April 18, 1929, upon a showing of practical difficulty, the commissioner may permit a toilet room or bathroom to open onto a kitchen or kitchenette.

D307.1.2 Toilets in cellars or basements (MDL 76(1)(b)).

No water closet shall be installed, kept or maintained in a cellar or basement unless it is provided for lawful living rooms in such cellar or basement, or is supplementary to water-closet accommodations required for a dwelling unit.

D307.2 Refuse chutes for prior code buildings (MDL 81)).

Notwithstanding the provisions of Section 1213.3 of the New York City Building Code, the installation of new refuse chutes shall not be required where all of the following conditions apply:

1. The building was constructed prior to July 1, 2008;

2. The building currently does not have a refuse chute;

3. The building is provided with a refuse storage space complying with Sections 1213.1.1 or 1213.1.2 of the New York City Building Code;

4. The building, if containing 12 or more dwelling units, is provided with a compactor complying with Section 1213.2 of the New York City Building Code; and

5. The building will be 6 stories or less upon completion of the alteration.

Exceptions: Penthouse structures located upon the roof of a sixth story and which form the upper level of multi-story dwelling units shall not be deemed a story for the purposes of applying Section D307.2, provided that the building is deemed to be 6 stories or less pursuant to Section 504.3 of the New York City Building Code.

D307.3 Privacy (MDL 82).

In every dwelling unit of 3 or more living rooms in every Class A multiple dwelling erected after April 18, 1929, there shall be access to every living room and bedroom without passing through any bedroom.