Sonoma Developmental Center Specific Plan
The Sonoma Developmental Center (SDC) provided services to persons with developmental disabilities for over 120 years in the heart of Sonoma Valley. At 945 acres, the property includes a large historic campus, agricultural lands to the east, and vast ecological and open space resources. The SDC was the County’s largest employer in its heyday. In 2018 the State of California officially closed the facility and relocated clients to smaller, community-based care facilities. The State of California which owns the site forged a unique partnership with Sonoma County that allows the County, together with the community, to chart the future role of the SDC. The culmination of that process occurred on December 16, 2022, when the Board of Supervisors passed the Sonoma Development Center Specific Plan and certified an environmental impact report that charts the future of the site.
Board of Supervisors Resolutions
Resolutions of the Sonoma County Board of Supervisors certifying the Environmental Impact Report for the SDC Specific Plan Project.
- Resolution No. 22-0555 (PDF: 2.11 MB)
- Resolution No. 22-0556
- Ordinance No. 6400 (PDF: 2.42 MB)
Environmental Impact Reports
- Supplement 1 to the Final Environmental Impact Report (FEIR) (PDF: 1.76 MB)
- Supplement 2 to the FEIR (PDF: 6.7 MB)
- Supplement 3 to the FEIR (PDF: 1.63 MB)
- Supplement 4 to the FEIR (PDF: 1,593 KB)
- Final Environmental Impact Report (PDF: 101 MB)
Specific Plan
- Proposed Revisions to the Public Review Draft SDC Specific Plan (PDF: 86.9 MB)
- SDC Public Review Draft Specific Plan (PDF: 59.9 MB)
- SDC Specific Plan: General Plan Consistency Overview (PDF: 757 KB)
Past Meetings
Meeting | Date |
Board of Supervisors Hearing | December 16, 2022 |
Planning Commission Public Hearing on SDC Plan and Final EIR |
November 3, 2022 |
Planning Agency In-Person Special Meeting | September 29, 2022 |
Planning Commission Meeting | September 15, 2022 |
Sonoma County Landmarks Commission | September 6, 2022 |
Joint Meeting with Sonoma Valley Citizens Advisory Commission, North Sonoma Valley Municipal Advisory Council, and Springs Municipal Advisory Council | August 24, 2022 |
Sonoma Developmental Center Specific Plan Policy Input #1 | March 22, 2022 |
Sonoma Developmental Center Specific Plan Policy Input #2 | March 26, 2022 |
CEQA Scoping Meeting | February 17, 2022 |
Board of Supervisors Meeting | January 25, 2022 |
Joint SMAC/NSVMAC/SVCAC Meeting | November 17, 2021 |
Reunión del Ayuntamiento de SDC en español | November 16, 2021 |
Alternatives Community Meeting | November 13, 2021 |
Reunión comunitaria en español | September 8, 2021 |
Board of Supervisors Meeting: Project Update | January 26, 2021 |
Community Workshop | November 14, 2020 |