(a) The prohibitions against discrimination in the sale or rental of housing set forth in section five of this article shall apply to all dwellings except as hereinafter exempted. Nothing in section five of this article, other than subsection (b) of this section, shall apply to the rental of a room or rooms in a rooming house occupied by the owner as a place of residence and containing no more than four rented rooms or rooms to be rented. Solely for the purposes of familial status, nothing in section five shall apply to:
(1) Any single-family house sold or rented by an owner: Provided, That such private individual owner does not own more than three such single-family houses at any one time: Provided, however, That in the case of the sale of any such single-family house by a private individual owner not residing in such house at the time of such sale or who was not the most recent resident of such house prior to such sale, the exemption granted by this subsection shall apply only with respect to one such sale within any twenty-four month period: Provided further, That such bona fide private individual owner does not own any interest in, nor is there owned or reserved on his behalf under any express or voluntary agreement, title to or any right to all or a portion of the proceeds from the sale or rental of more than three such single-family houses at any one time: And provided further, That the sale or rental of any such single-family house shall be excepted from the application of this article only if such house is sold or rented: