1988:
- ECDC is founded
- Oakwood group home opens
1989:
- Hickory Hill group home opens
- Rogers Lake group home opens
- Roxbury group home opens
- Dimmock group home opens
1996-1998:
- Rope Ferry group home opens
- Gales Ferry group home opens
- Roxbury group home opens
- Laurel group home opens
- Barton group home opens
1999:
- In-Home Support Voluntary Services begin
- Medically Fragile Services begin to be offered
2000-2002
- In-Home Support Voluntary Support services begin
- DCF Pre & Post Adoptive Services become available
- Black Point Day Program opens
- Uncasville group home opens
2003-2005
- Individualized Vocational Support Services
- Supported Living Services become available
- Center group home opens
- Extended Day Services offered
2006-2007
- Center Road day program opened Behavioral Assessment
- Program Development Services for families
- Agency based prevocational programming begins in Quaker Hill & Gales Ferry with Bozrah/Ledyard School Districts
2008-2009
- Opened new prevocational program site in Niantic
- Agency based prevocational programming began in the East Lyme School District
2014:
- District Integrated Individualized Educational Programming began in the Salem School District
2015:
- Agency based prevocational programming began in the New London School District
- District Integrated Individualized Educational Programming began in the Middletown School District
- District Integrated Individualized Educational Programming began in the East Hampton School District
2017-2018:
- Expanded Adult Day Service Options and moved to a new Life Skills Facility in Waterford
- Opened the agency’s first CRS setting, Chapel Hill
- Transition Academy is opened in East Hampton
- The prevocational program services moved from Niantic to Waterford
2020:
- Main Office and Day Program are moved to Groton