Commission Overturns Denial of 13,832-Square-Foot Tassahara Valley Home

The Contra Costa County Planning Commission unanimously reversed the Zoning Administrator's rejection of a large multigenerational home proposed for a rural stretch of unincorporated Danville, siding with a family that argued the denial rested on size alone while their project met every objective development standard. The vote capped nearly 100 minutes of testimony that touched on property rights, water scarcity, the character of Tassahara Valley and an emerging state law that commissioners openly acknowledged would limit their authority to say no.

• Planning Commission votes 6-0 to approve 13,832-square-foot home at 5980 Camino Tassahara Road, reversing the Zoning Administrator's June 1 denial

• Commissioners signal that size alone cannot justify denial when a project complies with objective standards on location, height, and design

• Housing Accountability Act looms over deliberations: multiple commissioners acknowledge the applicant could add an ADU and strip the county of subjective review

• Neighbors clash over rural character and water, with opponents citing wells running dry and supporters arguing code compliance should settle the matter