(2) Any rental unit in any newly constructed housing accommodation for which the building permit was issued after December 31, 1975, or any newly created rental unit, added to an existing structure or housing accommodation and covered by a certificate of occupancy for housing use issued after January 1, 1980, provided, however, that this exemption shall not apply to any housing accommodation the construction of which required the demolition of an housing accommodation subject to this chapter, unless the number of newly constructed rental units exceeds the number of demolished rental units;
(3) Except as provided by subsection (a-1) of this section, any rental unit in any housing accommodation of 4 or fewer rental units, including any aggregate of 4 rental units whether within the same structure or not, provided:
(A) The housing accommodation is owned by not more than 4 natural persons;
(B) None of the housing providers has an interest, either directly or indirectly, in any other rental unit in the District of Columbia;
(C) The housing provider of the housing accommodation files with the Rent Administrator a claim of exemption statement which consists of an oath or affirmation by the housing provider of the valid claim to the exemption. The claim of exemption statement shall also contain the signatures of each person having an interest, direct or indirect, in the housing accommodation. Any change in the ownership of the exempted housing accommodation or change in the housing provider’s interest in any other housing accommodation which would invalidate the exemption claim must be reported in writing to the Rent Administrator within 30 days of the change;