We are here to start something

Big Brothers Big Sisters is not your typical organization. We help children realize their potential and build their futures. We nurture children and strengthen communities. And we couldn’t do any of it without you.

Volunteer in the Bay Area

Learn how you can volunteer to start mentoring a child in need today

Real Life Story

See how we forge strong, long-lasting relationships.
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Start Something Today

Sponsor change in your community.

The Big Brothers Big Sisters Mission:

To provide children facing adversity with strong and enduring, professionally supported 1-to-1 relationships that change their lives for the better, forever.

The Big Brothers Big Sisters Vision:

That all children achieve success in life.

Changing Perspectives. Changing Lives.

For more than 100 years, Big Brothers Big Sisters has operated under the belief that inherent in every child is the ability to succeed and thrive in life. As the nation’s largest donor and volunteer supported mentoring network, Big Brothers Big Sisters makes and monitors meaningful matches between adult volunteers (“Bigs”) and children (“Littles”), ages 6 through 18, in communities across the country. We develop positive relationships that have a direct and lasting effect on the lives of young people.

In the Bay Area

Big Brothers Big Sisters of the Bay Area has been providing Bay Area youth with professionally supported one-to-one mentoring relationships in San Mateo, Santa Clara, San Francisco, Alameda, and Contra Costa counties since 1958.

In March of 2006, three separate Bay Area agencies, (BBBS of San Francisco & Peninsula, BBBS of the East Bay, and BBBS of Santa Clara County) merged to form Big Brothers Big Sisters of the Bay Area (BBBSBA), in order to more efficiently serve the community and be positioned for growth to meet the increasing demand for services.

Our Administrative headquarters are in San Francisco, with additional program offices in the East Bay (Oakland) and South Bay (Milpitas). In addition to maintaining the dedicated services of more than a thousand volunteers who serve as mentors, BBBSBA employs 24 staff members who make and support our matches in all five counties.

Our Programs Start Something

Here's the proof. National research has shown that positive relationships between Littles and their Bigs have a direct and measurable impact on children’s lives. By participating in our programs, Little Brothers and Sisters are:
  • more confident in their schoolwork performance
  • able to get along better with their families
  • 46% less likely to begin using illegal drugs
  • 27% less likely to begin using alcohol
  • 52% less likely to skip school.1

1Tierney, J.P., Grossman, J.B., and Resch, N.L. (1995) Making a Difference: An Impact Study of Big Brothers Big Sisters. Philadelphia: Public/Private Ventures

BBBSBA Tax ID #23-7108045

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© 2017 Big Brothers Big Sisters of the Bay Area
Serving Alameda, Contra Costa, Marin, Napa, San Francisco, San Mateo, Santa Clara, Solano & Sonoma Counties

65 Battery Street, Second Floor, San Francisco, CA 94111, 415-503-4050
825 Washington Street, Suite #202, Oakland, CA 94607, 510-836-8713
600A Valley Way, Milpitas, CA 95035, 408-586-0150
1618 2nd Street, San Rafael, CA 94901, 415-453-3800
3860 Broadway St., Ste. 109, American Canyon, CA 94503, 707-258-6346

BBBSBA Tax ID #23-7108045

Big Brothers Big Sisters, the Big Brothers Big Sisters logo, and Start Something are service marks of Big Brothers
Big Sisters of America, Inc. (BBBSA) and are used under a license from BBBSA. All rights reserved.