Section 27-2066. Sanitary facilities in apartments

a. Multiple dwellings
  erected after nineteen hundred twenty-nine:
    (1) Every  apartment  in  a  multiple  dwelling  erected  after  April
  eighteenth,  nineteen  hundred  twenty-nine shall contain a water closet
  and a bath.
    (2) In every such dwelling exceeding two stories in  height,  a  water
  closet  shall be accessible to every bedroom without passing through any
  other bedroom, and such access shall be required in  every  dwelling  of
  two stories or less in height erected after July first, nineteen hundred
  sixty-one.
    (3)  In  a  multiple  dwelling erected after July fourteenth, nineteen
  hundred sixty-seven, every apartment shall contain a washbasin.
    b. Converted dwellings.
    (1) Every apartment in a converted  dwelling  shall  contain  a  water
  closet and a bath or shower; and every apartment in a dwelling converted
  after  July  first,  nineteen  hundred  sixty-one  shall  also contain a
  washbasin.
    (2) In an apartment  located  in  a  dwelling  converted  after  April
  thirteenth,  nineteen  hundred  forty,  there shall be access to a water
  closet from every bedroom without passing through any other bedroom.
    c. New law tenements.
    (1) Every apartment in a new law tenement shall contain a water closet
  and a bath.
    (2) In every apartment, a water closet shall be  accessible  to  every
  bedroom without passing through any other bedroom.
    d. Old law tenements.
    (1) In every old law tenement a water closet shall be provided for the
  exclusive  use of the occupants of every apartment. If it is not located
  within the apartment, the water closet shall  be  located  on  the  same
  story as the apartment and shall be equipped with lock and key.
    (2)  Such water closet shall be constructed and ventilated as approved
  by the department.
    e. New apartments in converted dwellings or tenements. After  December
  ninth,  nineteen  hundred  fifty-five,  in  any  converted  dwelling  or
  tenement in which:
    (1) the number of apartments in  the  dwelling  is  increased  by  any
  alteration,  including  the  subdivision  of  existing  apartments,  the
  conversion of non-residential space or rooming units to  apartments,  or
  the enlargement of the dwelling; or
    (2)  all  apartments in the dwelling are vacated by the department or,
  except in a summer resort dwelling, are untenanted  for  sixty  days  or
  more;  a  new  certificate  of occupancy shall not be issued and a newly
  created  apartment  shall  not  be  occupied,  or  a  vacated  apartment
  reoccupied,  unless  it  contains  a  water  closet, bath or shower, and
  washbasin.
    f. Requirements for all apartments  in  multiple  dwellings  effective
  January  first, nineteen hundred seventy-three: Effective January first,
  nineteen  hundred  seventy-three,  there  shall  be  provided  for   the
  exclusive  use of the occupants of each apartment in a multiple dwelling
  a water closet, a bath or shower; and  a  wash  basin,  except  that  in
  tenements,  no  wash  basin  shall  be required pursuant to this section
  where there is a sink within the apartment.