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Board resolves Kensington 279 Colusa appeal with negotiated changes; approves new residence with conditions

6189307 · October 21, 2025
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 mediating between neighbors, supervisors approved construction of a new single‑family residence at 279 Colusa Avenue in Kensington and denied the appeal, with conditions that reduce eaves and deck size, raise certain windows, and slightly alter setbacks to reduce impacts on a nearby home.

The Contra Costa Board of Supervisors on Oct. 21 denied an appeal and approved a development plan and Kensington design review allowing construction of a new single‑family residence at 279 Colusa Avenue in Kensington, after a negotiated set of design changes both parties accepted.

Background and the dispute: the application proposes a new approximately 1,780‑square‑foot single‑family residence behind an existing house; the owner proposed converting the existing dwelling to an accessory dwelling unit (ADU) and building a new primary residence toward the rear of the lot. Neighbors appealed the zoning administrator and planning commission approvals, arguing…

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