ADU permit process in Murrieta, California
Last verified August 29, 2026
Prepared by GetYourPermit editorial teamReport an error
This guide includes the portions of the City permit process that passed our evidence review. Confirm project-specific requirements with the City before submitting.
Where to apply
- Department
- Building and Safety Department
- Permit portal
- City Online Portal System
- Contact
- 951-461-6062
Step by step
- 1
Register CSS account and submit Building Permit/plan-review materials
Register CSS account Provide address and APN Submit applicable application, plans and supplemental documents Pay invoiced fees Assigned project/plan number and fee instructions
- 2
City performs completeness and discipline review
Ensure materials conform to DS-162 Monitor CSS/email notifications Review next steps or correction notice
- 3
Upload corrections and responses when plans are returned
Review CSS correction notice Upload revised plans/documents, comment letter and responses Resubmittal for additional review
- 4
Pay final invoiced fees and retrieve approved documents
Pay invoiced final fees Meet applicable business-license condition Stamped approved plans and required documents uploaded to CSS
- 5
Upload final documents and request inspections in CSS
Upload final project documents before final inspection Select required inspections and submit request Inspection request confirmation and scheduled inspection display
What you need to submit
- Completed plan review application, plans and applicable supplemental documents
- Completed site/plot plan and application identifying selected pre-approved plan/options
- Final project documents uploaded digitally to CSS
Pre-approved ADU plans
Use Murrieta’s official page to confirm which designs, site conditions, and supplemental documents qualify. Plan-check timing still depends on the project and city review.
View pre-approved plansProject-specific next step
Build your Murrieta permit report
Choose your ADU type and size to bring the City process, researched permit fees, and early construction budget into one planning report.
Sources for this guide
Additional city reference pages
The August 2019 bulletin explains that plan-check and building-permit charges are determined from page four of the City's annually readopted comprehensive fee schedule.
Accessed August 28, 2026
Official source for the current City fee schedule, rule, or verification path.
Accessed August 28, 2026
The official City page confirms that the live 2026 Building & Safety page links only a document labeled 2024-25 Comprehensive User Fee Schedule, so it does not establish a current FY 2026-27 amount.
Accessed August 28, 2026