When a person with an intellectual or developmental disability turns 18 or ages out of the school system, their life doesn’t follow a single path. What happens depends on the level of support they need, the services available in their state, and the planning their family has done. Most adults with these disabilities live with family members, receive some form of government assistance, and piece together a combination of housing, employment, and day programs. The transition from childhood services to the adult system is one of the most significant and stressful shifts families face.
The “Cliff” After School Ends
Under federal law, students with disabilities receive services through their school district until they graduate or turn 22, whichever comes first. These services include individualized education, therapy, and transition planning that must begin before the student turns 16. The school is required to provide a Summary of Performance document before the student leaves, outlining their academic and functional abilities and recommending next steps for post-school life.
Once school ends, everything changes. The entitlement to services disappears. In the K-12 system, a student with a disability is guaranteed support. In the adult system, services are funded through Medicaid waivers, state agencies, and federal programs that often have long waiting lists. Families frequently describe this shift as “falling off a cliff” because the structured daily routine, social connections, and professional support that school provided all vanish at once. There is no automatic handoff to the next program. Families must apply, qualify, and often wait years for services.
Where Adults With Disabilities Live
About 61% of people with intellectual and developmental disabilities who receive long-term services live with a family member. That family member is often a parent, and roughly 24% of those individuals live with an aging caregiver, a proportion expected to grow as people with disabilities live longer. This creates an urgent planning problem: what happens when the caregiver can no longer provide care?
For those who don’t live with family, several residential options exist, though availability varies dramatically by state and county:
- Group homes are licensed residences, typically serving four or fewer people, where staff provide direct support with daily living skills like personal grooming, cooking, communication, and managing a household.
- Host homes (life-sharing) place one or two adults with a family that is not their own. The host family provides a home environment while receiving compensation and training.
- Supported independent living allows adults to live in their own apartments with varying levels of staff assistance, from a few check-ins per week to round-the-clock support.
- Community living support provides in-home help to people still living with their families, focusing on building skills that allow greater independence over time.
Large institutional settings have largely been replaced by these community-based models over the past several decades, though some states still operate larger facilities for individuals with the most intensive medical or behavioral needs.
Financial Support and Benefits
Most adults with intellectual disabilities rely on Supplemental Security Income (SSI), a federal program that provides monthly cash payments to people with limited income and resources. To qualify for disability benefits, a person generally cannot earn more than $1,690 per month in 2026 ($2,830 if blind). SSI payments are modest, and eligibility comes with strict asset limits, meaning recipients must keep their savings extremely low.
This is where ABLE accounts become important. An ABLE account lets a person with a disability save up to $19,000 per year (as of 2025) without losing eligibility for SSI or Medicaid. Employed account holders can contribute even more. Money in an ABLE account can be used for housing, education, transportation, health care, and other disability-related expenses. Families can also roll funds from a 529 college savings plan into an ABLE account, as long as the combined contributions don’t exceed the annual limit.
Medicaid is the other critical piece. It funds the home and community-based services waivers that pay for group homes, day programs, personal care aides, and other supports. Losing Medicaid eligibility can mean losing access to housing and daily care, which is why families often structure finances carefully to stay within program limits.
Daily Life: Work and Day Programs
What an adult with a disability does during the day depends on their abilities, interests, and the services they can access. The options generally fall into three categories.
Competitive integrated employment means working a regular job in the community alongside people without disabilities, earning at least minimum wage. Vocational rehabilitation agencies help match individuals with employers, and job coaches provide on-site training and ongoing support. Customized employment takes this further by negotiating a role that is shaped around the person’s specific strengths, creating a position that works for both the employee and the employer. Federal policy has increasingly prioritized these models over sheltered workshops, where disabled workers historically earned far below minimum wage.
Day habilitation programs serve adults who need more structured support. These programs focus on building practical skills like communication, self-care, and social interaction. Community day services take participants into the broader community for activities based on their interests, with the goal of inclusion and relationship-building rather than just supervision. Adult day services provide direct care in a group setting with an emphasis on social, physical, and emotional well-being.
Some adults participate in a mix of both, working part-time and attending a day program on other days. Others, particularly those with more significant disabilities, spend their days primarily in residential or day program settings with one-on-one support staff.
Legal Rights and Decision-Making
Turning 18 brings legal adulthood, and for families of people with intellectual disabilities, this raises immediate questions about who makes medical, financial, and personal decisions. Historically, the main option was guardianship, where a court transfers some or all decision-making authority to another person. Full guardianship strips an adult of the right to make choices about where they live, what medical treatment they receive, and how they spend money.
A growing alternative is supported decision-making. In this model, the person with a disability chooses trusted people to help them understand and communicate their decisions, but the decisions remain theirs. They might rely heavily on their support team, but they don’t lose legal control. Several states have passed legislation formally recognizing this approach, and the American Bar Association has urged that it be fully considered as a less restrictive option before guardianship is imposed. California’s 2022 Assembly Bill 1663 is one example of this legislative trend.
The distinction matters enormously. Guardianship is difficult to reverse and removes fundamental rights. Supported decision-making preserves autonomy while acknowledging that someone may need help processing information or weighing options.
Health Challenges and Life Expectancy
Adults with intellectual disabilities face significantly poorer health outcomes than the general population. Life expectancy is roughly 67 years, about 16 years shorter than average. For people with Down syndrome, the most common genetic cause of intellectual disability, life expectancy drops to around 55 years, driven by higher rates of congenital heart defects, early-onset dementia, and autoimmune conditions.
The gap isn’t entirely explained by biology. Respiratory and circulatory diseases are leading causes of premature death, and many of these deaths are considered avoidable with timely treatment. People with intellectual disabilities experience higher rates of chronic conditions, both physical and mental, and face systemic barriers to health care including difficulty communicating symptoms, fewer preventive screenings, and providers who lack training in disability-specific needs. The life expectancy gap does narrow with age, meaning that once a person with an intellectual disability reaches their 60s, their remaining years are closer to the general population’s.
The Aging Caregiver Problem
Perhaps the most pressing concern for families is long-term planning. With nearly a quarter of adults with developmental disabilities living with an aging caregiver, thousands of families are approaching a crisis point with no clear plan. When a parent in their 70s or 80s can no longer provide care, the transition is often sudden, triggered by a hospitalization or death rather than a planned move.
Crisis respite homes exist for short-term emergencies, providing temporary residential care for up to four people who are experiencing disruption in their living situation. But these are stopgap measures. The better path is planning years in advance: getting on waiting lists for residential services, establishing an ABLE account or special needs trust, identifying a supported decision-making team, and connecting with the state’s developmental disabilities agency before the need becomes urgent. The families who navigate this system most successfully are the ones who start planning well before the caregiver can no longer provide support.