Programs that provide permanent affordable housing and supportive services for families whose current housing situation is unstable with the objective of preventing family homelessness, preserving families at risk for separation and reunifying families that have been separated. The program generally provides intensive case management involving regular home visits, development of a family care plan, and coordination of services identified by the plan which may include health care, substance abuse treatment, counseling and other mental health services, parenting skills training, family literacy services, tutoring, vocational training, money management and other life skills training, recreational activities, child care and transportation. Some programs focus specifically on families involved in the child welfare system or other family subgroups.

Programs that provide affordable, community-based housing for individuals and families who have experienced long-term or chronic homelessness and have been diagnosed as having a physical or developmental disability, a severe mental illness, substance use disorder problems or HIV/AIDS; or are members of another designated group within the homeless population. Structures may include apartments, single-family houses, duplexes, group homes or single-room occupancy housing. Permanent supportive housing programs generally provide residents with the rights of tenancy under state or local landlord/tenant laws and are linked to services designed to meet residents' needs. Supportive services vary depending on the resident population. Most programs offer some type of case management and housing support, but may also offer more intensive mental health, substance use disorder, vocational, employment or other services which help promote independent living. Supportive services may be offered on-site or off-site, or be provided by a mobile service team and may be available to people with current housing who are at risk of becoming homeless.

Residential facilities for older adults and/or people with disabilities who are unable to function in an independent living environment because they need assistance with toileting, bathing, dressing, medication management and administration, meals and housekeeping and other activities of daily living, but do not require nursing care on a regular basis. Living options range from state institutions for individuals with the most severe disabilities who require intensive services to settings that enable individuals with disabilities to live with their own families or in their own homes or apartments with supportive services from community-based supported living providers. Alternatives in between include health care facilities for people with a primary need for developmental services in combination with an intermittent need for skilled nursing care; community care facilities (residential care homes or group homes) for people who require varying levels of supervision and assistance in the activities of daily living; assisted living facilities; continuing care retirement communities; life care communities; foster family placements for adults who will benefit from interaction in a family environment; and semi-independent living facilities for individuals with disabilities who need minimal levels of support to live and work in the community. Some of these facilities are licensed by the state.

An alteration in thinking, mood or behavior or some combination of those that either creates distress or interferes with people's relationships or their ability function.

Unaccompanied adults who have been continuously homeless for a year or more or have had at least four episodes of homelessness in a three year period and suffer from one or more disabling condition(s) including a diagnosable substance abuse disorder, serious mental illness, developmental disability or chronic physical illness or disability, which limit their ability to perform activities of daily living.

Families, usually consisting of two parents and their children but also including single parent families, extended families and nontraditional family groups, who have no fixed, regular and adequate residence, who are residing temporarily with relatives or friends or who live on the street, in emergency or transitional shelters, in a hotel or motel paid for with a shelter voucher, in seriously substandard housing or in an abandoned building, place of business, car or other vehicle, or other public or private place that is not ordinarily used as a regular sleeping accommodation for people.

People who have a significant degree of mental or emotional disturbance and are residing temporarily with relatives or friends or who live on the street, in emergency or transitional shelters, in a hotel or motel paid for with a shelter voucher, in seriously substandard housing or in an abandoned building, place of business, car or other vehicle, or other public or private place that is not ordinarily used as a regular sleeping accommodation for people.