Project Number



501 Palmer Lane, North Fair Oaks

About the Project

The project parcel was previously split between the County of San Mateo and Town of Atherton boundary.  In 2018, the San Mateo Local Agency Formation Commission (LAFCo) approved a minor sphere-of-influence amendment and detachment of a portion of the parcel (approximately 9,500 sq. ft.) from the Town of Atherton.  The County has historically issued permits for development on the property and detachment was supported by the Town of Atherton and County to clarify which agency had land use jurisdiction and provide for consistent application of land use regulations by one agency over the whole of the property.  Additionally, detachment was necessary in order to subdivide the property, as proposed, placing the entire property in the County’s jurisdiction.  Subsequent to detachment, the proposed General Plan Map Amendment and Zoning Map Amendment is necessary to incorporate this portion of the parcel in the County’s land use and zoning maps.  The applicant requests a General Plan Map Amendment, Zoning Map Amendment, Minor Subdivision, and Grading Permit to assign a consistent zoning designation of One-family Residential (R-1/S-93) and General Plan designation of Single-family Residential, to the 9,500 sq. ft. portion (detached from the Town of Atherton) of the 34,816 sq. ft. parcel and subdivide the parcel into 3 lots:


Proposed Parcel Size

Proposed Access

Proposed Parcel A

11,082 sq. ft.

San Benito Avenue

Proposed Parcel B

13,732 sq. ft.

Palmer Lane (existing)

Proposed Parcel C

10,002 sq. ft.

Palmer Lane

The existing single-family residence will remain on proposed Parcel B and a new two-story residence with a basement is proposed for Parcel A.  A total of 470 cubic yards of grading (i.e., excavation) is proposed to accommodate the new basement for the proposed development on Parcel A.  The removal of 12 trees, including four significant trees consisting of one Walnut tree (12 inches diameter at breast height (dbh)), two American elm trees (12 inches and 25 inches dbh), and 1 Mexican fan palm tree (26 inches dbh), located throughout the property is proposed, primarily on proposed Parcel A.  No development is currently proposed on Parcel C.

Project Chronology

July 19, 2018 General Plan Map Amendment, Zoning Map Amendment, and Minor Subdivision applications submitted, PLN 2018-00271.

June 30, 2019 Major Development Pre-application Public Workshop, PRE2018-00061.

January 28, 2022 - Grading Permit application submitted.

February 28, 2022 - Project application deemed complete.

March 14, 2022 - Initial Study/Mitigated Negative Declaration circulated for public review; review period ended on April 4, 2022.

April 28, 2022 - North Fair Oaks Community Council meeting; the Council recommended approval, see Section B below.

June 22, 2022 Planning Commission recommendation (for approval) to the Board of Supervisors.

July 26, 2022 Board of Supervisors meeting.


Summer Burlison, Project Planner