ADU resources
Southern California ADU Requirements & Resources
Planning an Accessory Dwelling Unit (ADU) or Junior Accessory Dwelling Unit (JADU)? Below are official ADU resources from the State of California and local jurisdictions throughout Southern California, where property owners can find current information on ADU requirements, development standards, applications and permitting.
ADU regulations and local procedures change. The applicable city or county is the final word on current requirements for your project.
California Statewide ADU Resources
California Department of Housing and Community Development (HCD) ↗ California ADU Resources & ADU Handbook hcd.ca.gov
Los Angeles County
New home plans in Los Angeles County →
Los Angeles County ↗ Accessory Dwelling Unit Resources planning.lacounty.gov
City of Los Angeles ↗ LADBS Accessory Dwelling Units dbs.lacity.gov
Burbank ↗ Accessory Dwelling Unit Requirements & Applications burbankca.gov
Pasadena ↗ Accessory Dwelling Unit Resources cityofpasadena.net
Orange County
New home plans in Orange County →
Orange County ↗ Accessory Dwelling Unit Resources pwds.oc.gov
Anaheim ↗ ADU & JADU Municipal Code Requirements codelibrary.amlegal.com
Costa Mesa ↗ Accessory Dwelling Unit Resources costamesaca.gov
Fullerton ↗ Accessory Dwelling Unit Regulations cityoffullerton.com
Garden Grove ↗ Accessory Dwelling Unit Resources ggcity.org
Irvine ↗ Constructing an Accessory Dwelling Unit cityofirvine.gov
San Bernardino County
New home plans in San Bernardino County →
San Bernardino County ↗ ADU Handouts & Building Resources lus.sbcounty.gov
Chino Hills ↗ Accessory Dwelling Unit Requirements chinohills.org
Ontario ↗ Accessory Dwelling Unit Resources ontarioca.gov
Rancho Cucamonga ↗ Planning Resources & ADU Information cityofrc.us
Riverside County
New home plans in Riverside County →
Riverside County ↗ Permit-Ready ADU Program & Submittal Resources building.rctlma.org
City of Riverside ↗ ADU & JADU Planning Resources riversideca.gov
Corona ↗ ADU Guide Sheets & Planning Forms coronaca.gov
Temecula ↗ Accessory Dwelling Unit Requirements temeculaca.gov
San Diego County
New home plans in San Diego County →
San Diego County ↗ Accessory Dwelling Unit Information sandiegocounty.gov
City of San Diego ↗ ADU & JADU Requirements — Information Bulletin 400 sandiego.gov
Chula Vista ↗ Accessory Dwelling Unit Permit Information chulavistaca.gov
Ventura County
New home plans in Ventura County →
Ventura County ↗ Accessory Dwelling Unit Planning Resources rma.venturacounty.gov
Camarillo ↗ Building an Accessory Dwelling Unit cityofcamarillo.org
Thousand Oaks ↗ Accessory Dwelling Unit Resources toaks.gov
City of Ventura ↗ Accessory Dwelling Unit Resources cityofventura.ca.gov
Important information
The resources on this page are for general informational purposes and link to external government websites or official municipal code resources.
ADU laws, local development standards, permit requirements, fees, procedures and interpretations may change. Property-specific conditions, zoning, overlays, easements, fire requirements, utilities, site conditions and other regulations may also affect what can be constructed on a particular property. The applicable city, county, planning department and building department set the current requirements.
Eastlake Design Studio is not affiliated with any of the government agencies listed on this page. A link to an agency or resource is not a statement about project eligibility, permit approval, processing time or the interpretation of applicable regulations.
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We can help you design it and take it through plan check.
We provide residential design documentation, code compliance assistance, permit coordination and permit processing support throughout Southern California. We can help you research the applicable requirements, prepare your residential plans, coordinate required project documentation and assist with the permit process.