(c) The city rent agency may, by regulation, in order to carry out the purposes of this chapter, impose additional conditions to the granting of certificates of eviction under this paragraph, including, but not limited to, the payment of stipends to the tenants by the landlord in such amounts and subject to such variations and classifications as such agency may determine to be reasonably necessary; and
(d) No certificate of eviction shall be issued pursuant to this paragraph unless the landlord shall have secured such approval as is required by law for the construction sought to be effected, and the city rent agency determines that the issuance of such certificate is not inconsistent with the purpose of this chapter.
(5) Notwithstanding any provisions to the contrary contained in this subdivision or in subdivision d of section 26-410 of this chapter or in the local emergency housing rent control act: