(D) The limitation of the exemption to a housing accommodation owned by natural persons shall not apply to a housing accommodation owned or controlled by a decedent’s estate or testamentary trust if the housing accommodation was, at the time of the decedent’s death, already exempt under the terms of paragraphs (3)(A) and (3)(B) of this subsection; and
(E) For purposes of determining the eligibility of a condominium rental unit for the exemption provided by this paragraph, by § 42-3404.13(a)(3), or by § 42-4016(a)(3) [expired], a housing accommodation shall be the aggregate of the condominium rental units and any other rental units owned by the natural person(s) claiming the exemption.
(4) Any housing accommodation which has been continuously vacant and not subject to a rental agreement since January 1, 1985, and any housing accommodation previously exempt under § 206(a)(4) of the Rental Housing Act of 1980, provided that upon rerental the housing accommodation is in substantial compliance with the housing regulations when offered for rent;
(5) Any rental unit in any structure owned by a cooperative housing association, if:
(A) The proprietary lease or occupancy agreement for the rental unit is owned by not more than 4 natural persons, who are shareholders or members of the cooperative housing association;