(b) It shall be unlawful for an owner of a dwelling unit to fail to
take all reasonable and necessary action to restore to occupancy an
occupant of a dwelling unit who either vacates, has been removed from or
is otherwise prevented from occupying a dwelling unit as the result of
any of the acts or omissions prescribed in paragraph (a) of this
subdivision and to provide to such occupant a dwelling unit within such
dwelling suitable for occupancy, after being requested to do so by such
occupant or the representative of such occupant, if such owner either
committed such unlawful acts or omissions or knew or had reason to know
of such unlawful acts or omissions, or if such acts or omissions
occurred within seven days prior to such request.