Horizon Services, Inc (HSI), originally named Horizon House, Inc, just completed celebrating 44 years of serving local bay area communities.  Our first program opened with a $17,500 contract from Alameda County to establish sober living support services for men re-entering the work force. In 1976 Horizon House eventually expanded to a 38 bed long term program for men and women. Today HSI operates seven programs in Alameda, San Mateo and Santa Clara Counties.  Our mission is to cultivate or restore a sense of hope, self-confidence and community to people impacted by substance use and mental health challenges by providing effective trauma informed prevention, treatment and recovery services.

From the beginning HSI has been continually looking for new and innovative ways to increase and improve our services to individuals, families and the community.  In 1980 HSI opened Chrysalis, a residential program for only women, in Oakland, CA. At that time there were no women only residential programs available in the County, women were forced to use treatment programs designed primarily for men.  Today, 38 years later, Chrysalis is still going strong.  Over the years Chrysalis has always been sensitive to the changing role and needs of women and has adapted the program accordingly.  Chrysalis currently has 16 beds and the program is specifically designed to meet the co-occurring needs of women.


In 1981, seeing the continuing need for residential treatment services in Alameda County, HSI developed a co-educational program and opened Cronin House. Over the years many men and women have graduated from Cronin House and they have carried the message of recovery forward. Cronin House is still an integral part of Alameda County services. It currently has 34 beds, with an average stay of 45+ days, and provides co-occurring treatment for men and women.

In 1987 HSI acquired Palm Avenue Detoxification Center. This acquisition provided HSI with another step in the continuum of care in recovery.  Palm Avenue was a social setting, non-medical program operating in San Mateo, Ca since 1977.  By becoming part of the HSI network of care clients leaving Palm Avenue could find reliable referral sources.   Palm Avenue Detox is still an important part of the San Mateo system of care serving co-occurring clients. It has 15 beds and serves both men and women living in the County.

In 1991 HSI expanded their services to Santa Clara County where they were awarded a contract to operate a men only residential detoxification and treatment program in San Jose. Originally known as the Bascom Avenue Rehabilitation Facility, HSI staff took ownership of the program and changed the name to Horizon South.  Horizon South over the years has been a partner in many of the the processes Santa Clara County engaged in to create and improve their public sector managed care system which was implemented in 1995.  We are currently working toward integrating health care data records as HSI moves forward with the County and their EHR vendor. Horizon South provides 10 detox beds and 31 residential beds for men in the South Bay.

In 1993 HSI expanded its services again by reaching out to youth.  Project Eden, a youth focused agency in Alameda County founded in the 1960’s, needed a larger agency with a well-established administrative structure and compatible philosophy to assume administration of their services. HSI took on this challenge. Today Project Eden provides support services to local schools, the probation department and to families. Under HSI leadership Project Eden began services for lesbian, gay, bisexual, transgendered and questioning youth, providing a place where LGBTQ youth are able feel safe and build their self-confidence. In 1995 HSI, with support from the community, sponsored their first Gay Prom for youth who may not be welcome at their own school proms and where they could experience an alcohol/drug-free social event. For the last 20+ years this event has continued to be supported by HSI and the community with a yearly average of about 400 youth participating.  This year, 2018, we are excited about adding an Adult Outpatient location in Pleasanton, expanding Project Eden’s services to East Alameda County.

In 2008 and 2009, with funding from Alameda County, HSI was excited to add Cherry Hill Detoxification Services Program to its continuum of services.  This program was the first of its kind in Alameda Country and was developed by HSI.  It is composed of a 24 hour sobering station to assess intoxicated men and women and a 32 bed co-ed detoxification component.  Situated in two separate buildings designed specifically for this service, HSI has been able to apply its “best practices” developed over many years of service. HSI/Cherry Hill Detox works with hospitals, law enforcement, emergency service workers and other community organizations to provide a safe homelike and supportive atmosphere for persons in the initial stages of withdrawal and to provide information and referrals to a continuum of recovery and co-occurring services available in the community.

In 2017 HSI, with funding from Santa Clara County, HSI built on their experiences of operating a sobering center and opened Mission Street Sobering Center in San Jose.  Mission Street Sobering is a collaborative partnership between the County of Santa Clara Behavioral Health Services and HSI.  In partnership with law enforcement and health care providers’ people can sober up, be assess on their mental health and/or substance use status, and receive referral to treatment services as needed.

As HSI has grown over the years we have expanded our training and practices to serve our clients with co-occurring substance use and mental health issues. Our clinical staff is overseen by our Clinical Services Department which provides individual and group supervision and consultation to our programs. Program and administrative staff are trained and evaluated on an ongoing basis to increase competency in the standards of care areas, including but not limited to: Welcoming and Person-centered care, Motivational Interviewing, Co-occurring and Trauma-Informed Capability, The training and use of Evidence Based Practices, Cultural Competency, and others.