(b) Subterfuge. — It shall further be an unlawful discriminatory practice to do any of the above said acts for any reason that would not have been asserted but for, wholly or partially, a discriminatory reason based on the actual or perceived: race, color, religion, national origin, sex, sexual orientation, gender identity or expression, familial status, family responsibilities, disability, matriculation, political affiliation, source of income, status as a victim of an intrafamily offense, place of residence or business, or homeless status of any individual.
(c) Families with children. —
(1) It shall be an unlawful discriminatory practice to do any of the acts prohibited in subsections (a) and (b) of this section wholly or partially based on the fact that a person has one or more children who reside with that person.
(2) There shall be a rebuttable presumption that an unlawful discriminatory practice has occurred if the person alleging discrimination has 1 or more children who reside with that person and any of the acts prohibited by subsections (a) and (b) of this section are done to maintain residential occupancies more restrictive than the following:
(A) In an efficiency apartment, 2 persons; or
(B) In an apartment with one or more bedrooms, 2 times the number of bedrooms plus one.
(3) Nothing contained in this chapter limits the applicability of any District or federal restriction regarding the maximum number of occupants permitted to occupy a dwelling. Nothing in this chapter regarding familial status applies to housing for older persons.
(4) For the purposes of this subsection “housing for older persons” means a premises which: