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.

On Wednesday, October 24th, the County held an additional Accessory Dwelling Unit (ADU) Ordinance workshop to discuss the framework of the ordinance. The workshop generated a large turnout, and staff received feedback on the permitting process, ADU sizes, locations, design standards, parking, and more. The results indicated general support for allowing ADUs in more land use categories, reducing development fees, increasing the allowable number of ADUs in AG/Rural land use categories, allowing parking in front setbacks for garage conversion ADUs, and including Tiny Homes into the ADU ordinance.

County staff will use feedback from this workshop to assist in drafting the ordinance.

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 Complete
Public Review Drafts Winter 2018
Public Hearing Draft Early 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

Property Information

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

Launch Application

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