All military members with families are required by the Department of the Army to report to the the Housing Services Office (HSO) as part of in-processing. Military personnel must sign in for duty and have their permanent-change-of-station orders before they can apply for on-post housing. Fort Leavenworth homes are available to military members from all service branches assigned here.The HSO is located in the Resiliency Center, Room 327, 600 Thomas Avenue.Operating hours are 8 a.m. to 4 p.m., Monday through Friday.(913) 684-3052 / 5686. DSN prefix is 552-xxxx.