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Board approves Alamo-area rezone, neighbors object to slope, drainage and fire risks

Contra Costa County Board of Supervisors · January 20, 2026
AI-Generated Content: All content on this page was generated by AI to highlight key points from the meeting. For complete details and context, we recommend watching the full video. so we can fix them.

Summary

After staff recommended approval and a 4–1 planning commission recommendation, the Board of Supervisors approved rezoning and a minor subdivision at 1921 Green Valley Road (Alamo) with variances for retaining walls and setbacks despite extended neighbor testimony on slope stability, landslides and watershed impact.

The Contra Costa County Board of Supervisors on Tuesday approved a rezone and minor subdivision at 1921 Green Valley Road in the unincorporated Alamo area, a project that drew extensive public opposition over hillside stability, creek impacts and proposed retaining‑wall variances.

County staff told the board the property is roughly two acres and that the project would rezone the parcel from agricultural to R‑40 (single‑family residential), split the lot into roughly 0.95‑acre and 1.05‑acre parcels, and require variances for front and side setbacks to accommodate retaining walls and driveway improvements. Staff said the parcel met the…

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