N.Y. Comp. Codes R. & Regs. tit. 10, § 712-1.25 – Engineering service and equipment areas.

(a) a boiler room, where required;
(b) an engineer's office;
(c) a mechanical and electrical equipment room;
(d) a maintenance shop;
(e) storage rooms for building maintenance supplies, and for housekeeping equipment;
(f) a toilet and shower room;
(g) a refuse room for trash storage located conveniently to a service entrance; and
(h) at least one janitor's closet on each floor.

The following minimum engineering service and equipment areas shall be provided: