County Of Sonoma › Development Services › Sonoma Public Infrastructure › Divisions › Capital Projects › County Government Center

County Government Center

graphic image of an architectural illustration and plans for a county government center

County Government Center Modernization

The County of Sonoma is taking a once-in-a-generation step to modernize its outdated Government Center at and around 575 Administration Drive. This project will create healthy, efficient, and sustainable workspaces for the public and County employees, while saving taxpayer money and reducing the County’s carbon footprint. The total projected cost is $434 million—the most cost-effective option studied, saving $249–$288 million compared to building a single new Government Center.	QUICK LINKS
	BACKGROUND
	TIMELINE
	VISUALIZATIONS
	DOCUMENTS
	CONTACTS

Background

1950s-built facilities at the current campus face over $750 million in deferred maintenance.
In 2013, a facility plan recommended modernization.
In 2019, the County explored redeveloping the former Sears site in downtown Santa Rosa, but projected costs reached $1.7 billion, leading the Board to focus back on the existing campus and other sites.

Timeline

JAN 2023	Board selects current County Campus site for potential new Government Center
JUL 2024	Design work approved
DEC 2024	Design team hired (ZGF Architects and COAR Design Group)
2027	Construction starts on new Government Center
Q3 2029	435 staff from seven departments move into new Government Center

Current Views and Visualizations

aerial view of a city street map with buildings marked

The map on the left shows the location (in red) of buildings on the current County Government Center slated for demolition as part of the County Government Center Modernization project.

The map on the right shows the possible layout of future County Government Center building at Fiscal and Administration drives in Santa Rosa.

Click the maps for enlarged views.

aerial view of a street map with architectural visualizations for new building

Documents

DRAFT	Notice of Preparation: Draft Environmental Impact Report
BUDGET	County Government Center Fiscal Information
MEETING	Sonoma County Government Center Scoping Meeting - June 24, 2025

Contacts

For comments about the County Government Center plan, please contact bos@sonomacounty.gov