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San Mateo County
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Site PlanApproved3865 Jefferson Avenue, Emerald Lake Hills

Jefferson Avenue Single-Family Residence

San Mateo County

Description

Construction of a new 5,935 square foot, two-story single-family residence with associated grading permit on a flag lot.

Impact summary

Adds a new home with conditions added by the planning commission and board regarding tree screening to protect neighbor privacy.

Applicant

Name
Steve Simpson (Architect) / Client
Address
3865 Jefferson Avenue, Emerald Lake HillsSee this on the map

At a glance

Hearings
1
Public comments
0
Total mentions
1

Last vote · Board of Supervisors

Approved4–1

Last discussed Aug 11, 2026.

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