Developmental Services Ontario (DSO)
What does Developmental Services Ontario mean?
Developmental Services Ontario, or DSO, is the single entry point for adults in Ontario who are seeking developmental services and supports funded by the provincial government. When a young person turns 18, families can connect with their regional DSO to begin the process of accessing services such as residential supports, community participation, and caregiver relief. The DSO conducts needs assessments and helps connect individuals and families to available resources in their area.
Why this term matters
For families in Ontario, connecting with the DSO early — ideally before a child turns 18 — can help ensure a smoother transition into adult services and reduce gaps in support after high school ends.
Canadian context
The DSO operates across Ontario through regional agencies, and wait times as well as available services can vary significantly depending on where a family lives. Eligibility for specific services is determined by the DSO and program administrators, not by a diagnosis alone.
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