Second Dwelling Unit

The County defines a Second Dwelling Unit (sometimes referred to as a “granny flat”) as an accessory structure intended for human habitation, which may be attached to or detached from the principal dwelling. A Second Dwelling Unit is typically a fully independent residence, with bathing facilities and/or a kitchen and no unobstructed means of internal access to the main residence.

To determine the type of planning permit required for a proposed second dwelling unit, you must determine if your project site is located in a coastal or non-coastal area.

Second Dwelling Units are permitted on all residentially zoned parcels in the non-coastal area that conform to the required minimum lot size for that zone stated in Section 8107-1.7 of the Non-Coastal Zoning Ordinance. However, if your project site is located in the coastal zone, the proposed unit must also conform to the development standards listed in sections 8175-5.1 (g) and 8181-13 of the Coastal Zoning Ordinance.

• Second Dwelling Units, which are located in the non-coastal zone and meet the requirements in the Non-Coastal Zoning Ordinance, require the issuance of a Zoning Clearance. Please fill out a Zoning Clearance Application and bring this with a set of site plans, floor plans, and elevation drawings to the Planning Public Counter at the County Government Center.  Please note that a signed, notarized affidavit from the property owner is also required. The fee for a Zoning Clearance for a Second Dwelling Unit in any non-coastal zone is $530.00.

•  Second Dwelling Units, which are located in the coastal zone and meet the requirements in the Coastal Zoning Ordinance, require the issuance of a Coastal Planned Development Permit by the Planning Director (unless it is in an exempt area*), following environmental review and notification to neighbors. To obtain the necessary application materials and information about the approval process and fees for Coastal Second Dwelling Units, please contact a planner at the Planning Public Counter at (805) 654-2488.