Accessory Dwelling Unit Ordinance (Secondary Dwellings)

The Board of Supervisors has directed staff to initiate Phase II of an Accessory Dwelling Unit Ordinance to further incentive and remove unnecessary barriers to their development.  As part of this effort, the County will review existing restrictions and limitations on secondary dwellings throughout the unincorporated areas of the County.

The Public Review Draft of the Accessory Dwelling Unit Ordinance is now available as a downloadable PDF. The revisions include strikeouts (deleted text) and underlines (added text). An executive summary precedes the proposed revisions, identifying the major changes.

You may submit written comments to the attention of Brian Pedrotti, Senior Planner, via email [email protected]. Hard copy correspondence can be sent to the address below.

Project Contacts

Comments and questions regarding the proposed ordinance may be submitted via email to or mailed to the following address:

Department of Planning & Building
ATTN: Accessory Dwelling Unit Ordinance/Brian Pedrotti
976 Osos Street, Room 300
San Luis Obispo, CA 93408

Project Progress



Research and Summary Report Complete
Ordinance Framework Complete
Public Workshop - Oct. 24, 2018 Complete
Public Review Drafts Winter 2018
Public Hearing Draft Spring 2019
Planning Commission Recommendation Spring 2019
Board of Supervisors Adoption Summer 2019
Inland Ordinance Effective Date Summer 2019
Coastal Zone Ordinance Effective Date Fall to Winter 2019

Interactive Maps (Land Use View)

Our interactive Land Use View mapping application can be used to look up property information by assessor parcel number (APN), plan or permit number, or address.

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Online Services (CSS Portal)

The County of San Luis Obispo provides online services through Citizen Self Service (CSS) to request a building inspection, research construction permits and property information and to pay fees.

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