shall be given to families of disabled veterans whose disability has been determined by the veterans' administration to be service-connected, and second preference shall be given to families of deceased veterans whose death has been determined by the veterans' administration to be service-connected, and third preference shall be given to families of other veterans; and (2) to families of other veterans, and as among such families first preference shall be given to families of disabled veterans whose disability has been determined by the veterans' administration to be service-connected, and second preference shall be given to families of deceased veterans whose death has been determined by the veterans' administration to be service-connected; and (3) to persons and families displaced by other public action including, without limitation, enforcement of the minimum standards of fitness for human habitation established by the state sanitary code and other local ordinances, by-laws, rules or regulations. (g) It shall not establish any requirement that applicants who have been displaced by any such public action be residents of the city or town in which the project is located, but may establish a requirement that any such applicant be a resident of the commonwealth for a period of six months prior to becoming a tenant. (h) It shall take steps necessary to maximize the utilization of handicap-accessible units by a person whose disability requires the accessibility features of the particular unit, including, but not limited to, (1) assuring that timely and appropriate information regarding the availability of handicap-accessible units reaches persons who may be interested in and eligible for such units, (2) except in an emergency, making available a vacant handicap-accessible