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Secondary Dwellings Zoning Ordinances - ADU, JDU

Santa Clara County has updated their New Secondary Dwellings Zoning Ordinance concerning Accessory dwelling Units

Secondary Dwellings Zoning Ordinances - ADU, JDU

Santa Clara County has updated their New Secondary Dwellings Zoning Ordinance concerning Accessory dwelling Units


If you would like to see these regulations go to https://plandev.santaclaracounty.gov/services/planning-services/processing-planning-applications/accessory-dwellings-units


Santa Clara County provides for secondary dwellings (or Accessory Dwelling Units, or ADUs) in zoning districts that allow residential uses. There are provisions specific to rural zoning districts and urban unincorporated districts, and they vary based on lot size. ADUs may be attached or detached, newly built spaces, or converted from an existing structure. An ADU must have its own living, sleeping, eating, cooking, and sanitation facilities, including a full kitchen and bathroom. Additionally, a Junior ADU (Jr. ADU) is no more than 500 square feet and must be contained entirely within a single-family residence. It must have a separate entrance and an efficiency kitchen but may share a bathroom with primary dwelling.

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©2025 San Martin Neighborhood Association

P.O. Box 886 • San Martin, CA 95046

info@sanmartinneighbor.org

501(c)(3) EIN 88-0937589

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