How To Apply For Service

Developmental Services Ontario (DSO)

Under the Services and Supports to Promote the Social Inclusion of Persons with Developmental Disabilities Act, 2008 (SIPDDA), all individuals wishing to apply for adult developmental services and supports for the first time must contact their respective regional Developmental Services Ontario (DSO) organization to have their eligibility confirmed and to complete the Developmental Services Application Package. The Developmental Services Application Package includes the Application for Developmental Services and Supports (ADSS) and the Supports Intensity Scale (SIS). The process will be consistent across the province for all individuals seeking services. 

  • Individuals must have their eligibility confirmed through Developmental Services Ontario (DSO).
  • Developmental Services Ontario helps adults with developmental disabilities connect to services and supports in their communities. There are nine agencies across Ontario to serve you. Our organizations are funded by the Ontario Ministry of Community and Social Services.
  • Wherever you live in Ontario, they can help you or someone for whom you care to connect with available residential supports, caregiver respite, community participation supports (like recreation, volunteering, employment, or in-home supports), professional and specialized services, person-directed planning, and other supports to help people with developmental disabilities become more involved in their communities.

Developmental Services Ontario Eligibility Questions and Answers (English)
Developmental Services Ontario Eligibility Questions and Answers (French)

Contact Information for the Central East Region DSO (York, Simcoe, Durham, and HKPR):


Phone:    905-953-0796 or 1-855-277-2121

Fax:         905-952-2077