N.Y. Multiple Residence Law § 171: Water-closet and bath accommodations

§ 171. Water-closet and bath accommodations. 1. Every dwelling

arranged for permanent occupancy shall contain a water-closet in every

apartment.

2. The floor of every compartment, bathroom or general toilet room

shall be made waterproof and such waterproofing shall extend six inches

or more above the floor so that the floor can be washed or flushed out

without leaking. No plumbing or plumbing fixture shall be enclosed

wholly or in part with woodwork.

3. Water-closets may be placed together in a general toilet room

provided such water-closets are supplementary to the water-closet

accommodations required for the exclusive use of tenants of the

dwelling, or are solely for the use of business portions of the

dwelling.

4. Every apartment arranged for permanent occupancy shall contain a

bath or shower accessible from every bedroom without passing through any

other bedroom. In dwellings arranged for transient occupancy there shall

be at least one shower or bath for every eight resident occupants.

5. Except as specifically provided otherwise in this chapter, every

water-closet compartment and bath or shower room shall have a window

opening upon a street or upon a lawful court or yard.

6. In lieu of a required window or skylight, it shall be lawful to

install a system of mechanical or gravity ventilation for water-closet

compartments or bathrooms in any portion of a dwelling. Such system of

ventilation shall be constructed, arranged and maintained continuously

to provide at least four changes per hour of the air volume of each such

water-closet compartment or bathroom.