CivicCause
Sign in
Monte Sereno Leadership
← Back to Santa Clara County Board of Supervisors
Follow this official
Follow Sylvia Arenas to save this official to your CivicCause account and be ready for future official-related updates.
Sign in to follow officials
Sign in to save this official and set a future alert timing preference.
Sylvia Arenas

Sylvia Arenas

Supervisor • District 1
District1@bos.sccgov.orgWebsite(408) 299-5010
Term expires: 2027-01-04
Sylvia Arenas is one of Silicon Valley's most dedicated champions for children, families, and working communities — a native San Josean whose entire professional and political career has been guided by a single, consistent mission: making life better for the families and children who call the South Bay home. She assumed office on the Santa Clara County Board of Supervisors on January 2, 2023, representing District 1, with her current term ending January 4, 2027. A proud native of San José and the daughter of immigrant parents, Arenas learned the value of hard work and the importance of serving others from an early age. She was born and raised in San José and later moved to the Evergreen neighborhood, where she and her husband José have raised their two children for over two decades. She earned a Bachelor of Arts in human development with a focus in early childhood development from CSU East Bay, followed by a Master of Public Administration from the University of San Francisco. Her academic foundation shaped a career that began not in politics but in direct service to families. She launched her public service career working for the City of San José through what is now called Project Hope — a Parks, Recreation and Neighborhood Services program that is part of the Mayor's Gang Prevention Task Force. She went on to work for agencies such as FIRST 5 Santa Clara County, a statewide program bringing critical services to young children, and Gardner Health Services, a health center providing services to low-income families. Before reaching the Board of Supervisors, Arenas built her elected record at two levels of local government. In 2014, she was elected to the Evergreen Elementary School District Board of Trustees, where she served until she won the District 8 seat on the San José City Council in 2016. She won reelection to the council outright in the March 2020 primary against Jim Zito. During her six years on the council, she gravitated to issues affecting the everyday lives of San José women and families, and launched the city's Family Friendly Initiative — aimed at increasing access to early education, after-school programs, safe housing, family-friendly public facilities, and paid family leave. She also chaired the city's Neighborhood Services and Education Committee, where she convened joint hearings with the County Board of Supervisors to address the crisis in affordable child care. In the November 2022 general election, Arenas defeated Republican Johnny Khamis to win the District 1 seat on the Santa Clara County Board of Supervisors. The district is a broad one, encompassing communities across East San José, Evergreen, and surrounding areas. Since joining the Board of Supervisors, she has focused on the needs of children across the county, ensuring that equity informs public investments, and working to create systemic changes that level the playing field in the South Bay. Her priorities as supervisor have included expanding renewable energy, improving public safety, and strengthening mental health services for Santa Clara County's homeless population. She has also led the county's advocacy on child care funding, co-leading efforts to secure state investment in universal preschool and local subsidized care for the youngest children. Most recently, she and a coalition of ten other local governments and nonprofits filed a lawsuit against the Trump administration for upending federal grants for permanent housing — a sign of her willingness to use every tool available to protect her constituents from federal policy reversals. She was elected to a second term as Board of Supervisors President by her fellow supervisors, a recognition from colleagues of her steady leadership and collaborative approach. Her career is a testament to the power of rooting public service in lived community experience — from her immigrant family's values to the neighborhoods and families she has served for more than two decades.
XFacebook
District staff
Patrick McGarrity
Director of Policy and Budget
patrick.mcgarrity@bos.sccgov.org(408) 299-5015
Alicia Fazal
Executive Assistant
alicia.fazal@bos.sccgov.org(408) 299-5013
Mariela Garcia
Senior Policy Aide
mariela.garcia@bos.sccgov.org(408) 299-5016
Victoria Lam
Housing, Land Use, Environment, and Transportation
victoria.lam01@bos.sccgov.org(408) 299-5014
Monica Rodriguez
Policy Aide
monica.rodriguez@bos.sccgov.org(408) 299-6910
Alec Chavez
Policy Fellow
alec.chavez@bos.sccgov.org(408) 299-5017
Adriana Sanchez
Administrative Assistant
adriana.sanchez01@bos.sccgov.org(408) 299-5010 (main line)
Cristian Cornejo
Community Relations Aide
cristian.cornejo@bos.sccgov.org(408) 299-5010 (main line)
David Ngô
Communications & Community Relations Aide
david.ngo@bos.sccgov.org(408) 299-6082
Joseph Farfan
Community Relations Aide
joseph.farfan@bos.sccgov.org(408) 299-6909
Rebecca Hall
Board Aide
rebecca.hall@bos.sccgov.org(408) 299-5019
Ruben Navarro
Community Relations Aide
ruben.navarro@bos.sccgov.org(408) 299-5018
Nancy Lê
Chief of Staff
nancy.l.le@bos.sccgov.org(408) 299-5012
Appointments
Vice Chair
Housing, Land Use, Environment and Transportation Committee
Chair
Children, Seniors and Families Committee (CSFC)
Recent news
Meet the District 10 candidates: How would you revitalize the Third Street corridor?
Mission Local • 2026-08-13
Bayview's Third Street corridor has struggled to recover from the COVID-19 pandemic. Here's how the district's candidates would change it. Meet the District 10 candidates: How would you revitalize the Third Street corrid
County Board of Supervisors delays vote on minimum wage hike, researchers divided on economic impacts - dailycal.org
Google Pleasanton • 2026-08-12
County Board of Supervisors delays vote on minimum wage hike, researchers divided on economic impacts dailycal.org
San Mateo County Board of Supervisors strengthens commitment to advancing economic mobility - smdailyjournal.com
Google Pacifica • 2026-08-12
San Mateo County Board of Supervisors strengthens commitment to advancing economic mobility smdailyjournal.com
At housing forum, District 10 candidates split from S.F. YIMBY on key issue
Mission Local • 2026-08-12
Plus: Forum makes a last-minute invite to the third frontrunner, DJ Brookter. But it was too little too late. At housing forum, District 10 candidates split from S.F. YIMBY on key issue
San Mateo County Board of Supervisors delays juvenile hall study session amid misconduct concerns - San Mateo Daily Journal
Google Redwood City • 2026-08-12
San Mateo County Board of Supervisors delays juvenile hall study session amid misconduct concerns San Mateo Daily Journal
San Mateo Co.: Board Of Supervisors Faces Criticism For Shelving Study Session On Juvenile Hall - sfgate.com
Google San Mateo • 2026-08-11
San Mateo Co.: Board Of Supervisors Faces Criticism For Shelving Study Session On Juvenile Hall sfgate.com
San Mateo County Supervisors Direct Staff to Establish the First Local Permitting Framework for Commercial Deployment and Operation of Humanoid Robots
Coastside Buzz • 2026-08-13
AGENDA. From the San Mateo County Board of Supervisors regular meeting on Tuesday, June 16th, 2026 at 9:00am, as a hybrid meeting with remote… The post San Mateo County Supervisors Direct Staff to Establish the First Loc
Napa County reduces groundwater pumping fees for valley landowners by more than half
Bay City News / Local News Matters • 2026-08-13
Property owners in the Napa Valley Subbasin got a temporary reprieve on impending fees for pumping groundwater after a vote by Napa County leaders on Tuesday to reduce them. The Napa County Board of Supervisors, acting a
Monterey County supes approve plan to strengthen data, AI governance rules
Bay City News / Local News Matters • 2026-08-12
Monterey County’s Board of Supervisors voted unanimously on Tuesday to approve a plan to strengthen data and artificial intelligence governance rules, furthering progress toward improvements in county-level data security
San Mateo County juvenile hall study session delayed amid criticism from residents
Bay City News / Local News Matters • 2026-08-12
The San Mateo County Board of Supervisors faced pushback from dozens of residents after it decided to postpone a planned study session on the county’s juvenile detention facility that is facing accusations of misconduct
San Mateo County passes stricter e-bike regulations after boy killed in collision
Bay City News / Local News Matters • 2026-08-12
The San Mateo County Board of Supervisors passed an ordinance Tuesday to place greater restrictions on e-bike use and proposed naming the law after a boy who was killed last year in a chain reaction involving an e-bike.
San Mateo County one of 1st places in US to pass resolution to regulate humanoid robots
ABC7 News Bay Area / KGO • 2026-08-12
The San Mateo County Board of Supervisors unanimously approved a resolution Tuesday to regulate commercial humanoid robots. Here's what that means.
Recent Newsletters
View newsletter archive
No official newsletters surfaced yet.
Upcoming Civic Activity
No upcoming activity extracted from official newsletters yet.
Share this profile
XFacebookLinkedInBlueskyRedditEmail