2006 New York Code - Sanitary Facilities In Rooming Units.

 
    §  27-2067  Sanitary  facilities  in  rooming units. a. Every building
  containing rooming units, and each individual apartment used for  single
  room  occupancy,  shall contain at least one water closet, washbasin and
  bath or shower for each six persons  lawfully  occupying  rooming  units
  therein,  and  for  any remainder of less than six persons. At least one
  water closet shall be located on any floor containing a rooming unit. If
  there are not more than two rooms on the first story above the  basement
  in said rooming house, no water closet is required on such floor but the
  occupants  of  the  room  shall  be  counted in determining the required
  number of facilities.
    b. Every occupant of a rooming unit shall have access to each required
  water closet, washbasin and bath or shower without passing  through  any
  other  rooming  unit  or  portion  of  the  dwelling  reserved for other
  occupants.
    c.  Any  additional  water  closet  installed  to  comply   with   the
  requirements  of  subdivision  a  of  this section shall be located in a
  compartment, separate from any  other  water  closet,  bath  or  shower,
  except  that  a  required washbasin may be provided in such compartment.
  Such additional baths, or showers,  shall  be  located  in  compartments
  separate from every required water closet.
    d. Sanitary facilities for the exclusive use of and accessible only to
  the occupants of one rooming unit may be combined in a bathroom. Neither
  the  facilities  nor  the  occupants shall be counted in determining the
  number of the facilities required in subdivision a of this section.