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  • Join us for our first annual Bowl-a-Thon on November 12 at Dover Bowl!
  • July 1st GBS Hosts Bingo at the Brand New DOVER BINGO!!!
  • Every Donation Counts!

Lifelong Learning and Enjoyment


Unique educational, innovative and fun programs await participants at our community centers in Dover, NH, Sanford, ME and partnering community-based venues. This unique hybrid offering of activities helps spread the two things we believe in most at GBS – knowledge and smiles. 

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Working & Growing

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Great Bay’s Skills Training/Assessment Employment Program (STEP), helps prepare individuals by teaching the skills and knowledge they need for placement into long-term, competitive and meaningful jobs in the local economy.

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Living with Independence

community living

We have three staffed residences in Portsmouth, NH (2), and York County in Maine that give individuals in our programs the opportunity to live on their own in a supervised setting, while making them feel a part of their local community. 

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Partnerships Benefit Businesses


Local area business that team up with our employment development staff gain access to a reliable and motivated workforce, that and supported by Great Bay Services staff.  You benefit from opportunities to gain solid, competitive employment in your communities.

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It's About an Individual's Ability, Not Their Disability.

Great Bay Services was the first New Hampshire organization of its kind dedicated to helping individuals with intellectual disabilities.

For six decades, in locations across southern New Hampshire and Maine, we’ve supported them, their families, those who care for them, and those in our communities that participate alongside them in the wealth of activities and classes we offer at our community center.


We do all we can, often going beyond simply what’s expected of us, to make that possible for all who walk through our doors in each day.