west branch group photo

Alpha Supported Living Services is a non-profit agency providing supported living and group training home services to adults and children with developmental disabilities in King, Snohomish, and Spokane counties.

Our Mission

The mission of Alpha Supported Living Services is to serve individuals with developmental disabilities by providing residential and community services that maximize each person’s quality of life.

We Are #AlphaStrong

Through this challenging year, Alpha has continued to work hard to serve the client families we work with.  Our staff has continued to go above and beyond for our community and we continue to thank them everyday for their hard work.  Take a look at a few special client and staff stories from this year!



  • Kuni Foundation Awards Alpha $150K!
    We are excited to announce that Alpha has been awarded a grant for 2023 from the Kuni Foundation that will go towards renovating and preserving our existing agency-owned homes and expanding home accessibility for more clients experiencing intellectual and developmental disabilities. We are so grateful for the Kuni Foundation’s continued […]
  • Giving Through Song 2022 is here!
    We are pleased to announce that Giving Through Song will be returning this year as a live event! On October 15th, join us for a fun Roaring 20’s style night of entertainment at Block 41 – a contemporary and chic event venue in Seattle’s Belltown neighborhood. We’ll be featuring seasonally […]
  • Community Feature: Alpha in the Lynnwood Times
    Part of the work we do at Alpha is the integration of our clients with the surrounding community.  From inter-agency social groups to movie nights to volunteer work, we continually offer services to help encourage an environment that fosters full quality of life for our clients.  One of these services […]

Living Up To Our Mission

Our dedicated employees, board, donors, families and community partners have stood with us as we reached new heights, created new systems to meet the support needs of those we serve, and expanded to meet the needs of those wishing to receive our services.

Scott Livengood, Chief Executive Officer

We’re Constantly Striving To Do More


Residential Clients Served


Representative Payee Clients


Community Access Clients Served


Direct Service Hours Provided in 2020


“Put simply – he could not have been living in a better circumstance anywhere, and I have deeply appreciated that “the ship has somehow managed to sail on, thru the storm. I cannot imagine it being any harder…and I cannot imagine a job more well done. Please accept my deepest gratitude to all for getting Andy through this last year and a half, and for sustaining what I have come to believe has to be the best supported living agency in America.”

Nick, parent

Being out in the community with someone he knows and is a consistent presence in his life makes a world of difference to my son. I have really appreciated the continuity provided by Alpha’s Community Access staff and the fact that my son looks forward to his time with Ramsey.

Maria, Parent