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.

Give $50 for our 50th Fundraiser!

We are excited to be celebrating our 50th anniversary of providing supported living services and with that we are kicking off the Give $50 for our 50th fundraising campaign. It is because of our community that we have made it to 50 years and with your help, we will be providing services for the next 50 years. Check out the fundraising page here to learn more and donate today!

GTS 2024

Save the date for Giving Through Song 2024! Our event will be on October 26th from 6pm-10pm. To learn more about the event, check out the latest post under News & Events and follow us on social media. Formal invitations will follow.

2023 Moving Mountains Award

It was an honor for Alpha to receive the 2023 Moving Mountains Award. We are proud of our efforts to raise DSP wages and provide a positive work environment for our employees. To learn more about our experience and the Moving Mountains Award click here.

Thank you to our DSP heroes!

Alpha is able to accomplish our goals because of the dedicated work of our DSP team. It is important to support our DPS team and their needs so that we can continue providing the best support for our individuals to live their lives to the fullest. Be sure to thank a DSP in your community for all that they do everyday!


Notice of a Data Breach

Alpha Supported Living Services is notifying some individuals who received services that their personal information may have been accessed by an unauthorized party after an employee was the victim of a sophisticated email phishing attack. The information affected by the incident included names, addresses, some Social Security numbers, some driver’s license or state identification numbers, health information, health insurance information, and a few passport numbers.  Alpha has no indication that the information has been misused. Alpha is evaluating its cybersecurity education and training measures for employees and is offering free credit monitoring to those who have been affected by the incident. Individuals with questions can contact a dedicated call center at 1-800-939-4170 Monday through Friday.

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 2022


Alpha does a better job than me with the doctor appointments, medication management, and monitoring for changing health concerns. It’s such a relief as a parent to have alpha do such a great job with medical care.

Kathleen, Parent

Alpha SLS has given our daughter independence as well as safety. Alpha recognizes that each person’s needs are unique. We are so grateful for the personal attention of the daily caregivers, supervisors and office staff. Medical and dental needs are organized and supervised by an RN. It is such a relief to know that her care plan will be adjusted as changes and her needs change. We cannot thank Alpha enough for the attention to details in the daily life of our daughter.

CK, Parent