§ 27-2005 Duties of owner.
a. The owner of a multiple dwelling shall keep the premises in good repair.
b. The owner of a multiple dwelling, in addition to the duty imposed upon such owner by subdivision a of this section, shall be responsible for compliance with the requirements of this code, except insofar as responsibility for compliance is imposed upon the tenant alone.
c. The owner of a one- or two-family dwelling shall keep the premises in good repair, and shall be responsible for compliance with the provisions of this code, except to the extent otherwise agreed between such owner and any tenant of such dwelling by lease or other contract in writing, or except insofar as responsibility for compliance with this code is imposed upon the tenant alone.
d. The owner of a dwelling shall not harass any tenants or persons lawfully entitled to occupancy of such dwelling as set forth in paragraph 48 of subdivision a of section 27-2004 of this chapter.