The following information was provided by the National Health Care for the Homeless Council
There is more than one “official” definition of homelessness. Health centers funded by the U.S. Department of Health and Human Services (HHS) use the following:
A homeless individual is defined in section 330(h)(4)(A) as “an individual who lacks housing (without regard to whether the individual is a member of a family), including an individual whose primary residence during the night is a supervised public or private facility (e.g., shelters) that provides temporary living accommodations, and an individual who is a resident in transitional housing.” A homeless person is an individual without permanent housing who may live on the streets; stay in a shelter, mission, single room occupancy facilities, abandoned building or vehicle; or in any other unstable or non-permanent situation. [Section 330 of the Public Health Service Act (42 U.S.C., 254b)]
An individual may be considered to be homeless if that person is “doubled up,” a term that refers to a situation where individuals are unable to maintain their housing situation and are forced to stay with a series of friends and/or extended family members. In addition, previously homeless individuals who are to be released from a prison or a hospital may be considered homeless if they do not have a stable housing situation to which they can return. A recognition of the instability of an individual’s living arrangements is critical to the definition of homelessness. (HRSA/Bureau of Primary Health Care, Program Assistance Letter 99-12, Health Care for the Homeless Principles of Practice)
Programs funded by the U.S. Department of Housing and Urban Development (HUD) use a different, more limited definition of homelessness [found in the Homeless Emergency Assistance and Rapid Transition to Housing Act of 2009 (P.L. 111-22, Section 1003)].
An individual who lacks a fixed, regular, and adequate nighttime residence;
An individual who has a primary nighttime residence that is a public or private place not designed for or ordinarily used as a regular sleeping accommodation for human beings, including a car, park, abandoned building, bus or train station, airport, or camping ground;
An individual or family living in a supervised publicly or privately operated shelter designated to provide temporary living arrangements (including hotels and motels paid for by Federal, State or local government programs for low-income individuals or by charitable organizations, congregate shelters, and transitional housing);
An individual who resided in a shelter or place not meant for human habitation and who is exiting an institution where he or she temporarily resided;
An individual or family who will imminently lose their housing [as evidenced by a court order resulting from an eviction action that notifies the individual or family that they must leave within 14 days, having a primary nighttime residence that is a room in a hotel or motel and where they lack the resources necessary to reside there for more than 14 days, or credible evidence indicating that the owner or renter of the housing will not allow the individual or family to stay for more than 14 days, and any oral statement from an individual or family seeking homeless assistance that is found to be credible shall be considered credible evidence for purposes of this clause]; has no subsequent residence identified; and lacks the resources or support networks needed to obtain other permanent housing; and
Unaccompanied youth and homeless families with children and youth defined as homeless under other Federal statutes who have experienced a long-term period without living independently in permanent housing, have experienced persistent instability as measured by frequent moves over such period, and can be expected to continue in such status for an extended period of time because of chronic disabilities, chronic physical health or mental health conditions, substance addiction, histories of domestic violence or childhood abuse, the presence of a child or youth with a disability, or multiple barriers to employment.
Hence different agencies use different definitions of homelessness, which affect how various programs determine eligibility for individuals and families at the state and local level. Health centers use the HHS definition in providing services.