Skip to main content

COVID-19 Updates: Get the latest public information related to coronavirus disease 2019 (COVID-19) at ReadySLO.org.

The Department of Planning and Building Permit Center is open by appointment only for limited building permit intake, correction returns/pick-up and to schedule virtual meetings. To submit electronic Building Permit or Land Use Permit Applications please visit  our website.

Return to the top of the page

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.

Launch Land Use View Application


Online Services (CSS)

The County of San Luis Obispo provides online services through our Citizen Self-Service (CSS) Permit Portal to submit building permit and planning applications, request a building inspection, research permits and property information, and to pay fees.

Launch CSS

Photo of an accessory dwelling unit

Accessory Dwelling Unit Laws Explained

Author: Department of Planning and Building
Date: 12/17/2019 3:46:45 PM

On October 9, 2019, California Governor Gavin Newsom signed several bills to further facilitate the development of accessory dwelling units (ADUs). Specifically, the signing of SB 13, AB 68, and AB 881 made significant changes to State ADU Law.


The County of San Luis Obispo will be implementing the provisions of the new State ADU Law when the three (3) bills become effective on January 1, 2020.

The following information is being provided to answer many frequently asked questions pertaining to the changes in ADU standards.

Accessory Dwelling Unit FAQ

The following document serves as a guide for ADU applications received on or after January 1, 2020, but before the County adopts new Inland or Coastal ADU standards.

State Regulation Guide