24 CFR §960.407

1. (a)The PHA must give preference to elderly families and disabled families equally in determining priority for admission to mixed population developments. The PHA may not establish a limit on the number of elderly families or disabled families who may be accepted for occupancy in a mixed population development.
2. (b)In selecting elderly families and disabled families to occupy units in mixed population developments, the PHA must first offer units that have special accessibility features for persons with disabilities to families who include persons with disabilities who require the accessibility features of such units (see §§ 8.27 and 100.202 of this title).