Green Valley Road Rezone and Two-Lot Minor Subdivision (County File CDRZ23-03271 and CDMS23-00005)
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The property at 1921 Green Valley Road in Alamo, California, is being rezoned from A-2 General Agricultural to R-40 Single-Family Residential and subdivided into two parcels of approximately 0.95 acres and 1.05 acres, with a 4,339-square-foot private access and utility easement on the larger parcel. The project includes the demolition of an existing barn and the construction of a new 3,496-square-foot two-story residence with a 553-square-foot garage, a 315-square-foot main floor deck, and a 383-square-foot lower floor concrete patio on Parcel B, while an existing residence remains on Parcel A. Site improvements involve widening and repaving the driveway connecting to Green Valley Road, installing six retaining walls ranging from zero to nine feet in height, five bioretention filters for stormwater management, a concrete ditch, and trench inlets, along with underground installation of water, sewer, and electrical utilities to the new residence. Grading will involve approximately 330 cubic yards of cut and 540 cubic yards of fill, resulting in a net import of 210 cubic yards. The applicant has requested variances to reduce the front setback from 25 feet to 0 feet and the side yard from 20 feet to 8 feet for Wall No. 1, and the front setback to 5 feet for Wall No. 3. A tree permit has been sought for the removal of eight protected trees including valley oaks, coast live oaks, coast redwoods, and an ash tree, with additional work permitted within the driplines of four other protected trees to accommodate construction activities. An exception has been granted to allow retention of overhead utility services along the Green Valley Road frontage, despite county requirements for undergrounding. The project was approved through local land use processes under the jurisdiction of Contra Costa County, with compliance ensured through the California Environmental Quality Act and local ordinances. The approval notice was issued on January 22, 2026, following a determination by the County’s Board of Supervisors on January 20, 2026. All work must conform to approved plans and conditions of approval, with oversight provided by the County’s Department of Conservation & Development, and the project is not structured as a federal contract or procurement but as a land use entitlement with regulatory conditions.
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Green Valley Road near Kimberwicke Court and Oak Glen Court, Alamo, CA, 94507Set-Aside
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