(a) no application for a certificate of eviction under paragraph three or four of this subdivision and no application for a certificate of eviction under paragraph one of subdivision j or under subdivision c of this section for the purpose of withdrawing a housing accommodation from the housing market on the grounds that the continued operation of such housing accommodation would impose undue hardship upon the landlord, pending or made on or after the effective date hereof shall be granted by the city rent agency unless the city rent agency finds that there is no reasonable possibility that the landlord can make a net annual return of eight and one-half per centum of the assessed value of the subject property without recourse to the remedy provided in said paragraph three or four or said subdivision c or j and finds that neither the landlord nor his or her immediate predecessor in interest has intentionally or willfully managed the property to impair the landlord's ability to earn such return; and
(b) the effectiveness of any certificate of eviction or of any order granting a certificate of eviction pursuant to paragraphs three and four of this subdivision shall be suspended, and no tenant may be evicted pursuant to any such certificate or order, unless the city rent agency:
(i) finds that there is no reasonable possibility that the landlord can make a net annual return of eight and one-half per centum of the assessed value of the subject property without recourse to the remedy provided in said paragraphs three and four and finds that neither the landlord nor his or her immediate predecessor in interest has intentionally or willfully managed the property to impair the landlord's ability to earn such return; and