ADU permit cost and fee breakdown in Murrieta, California
GetYourPermit’s researched permit-fee range for a detached accessory dwelling unit in Murrieta, with category estimates and direct reference links used in our investigation.
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ADU size
California prohibits development impact fees for ADUs of 750 sq ft or less, so the 749 / 750 / 751 steps are worth comparing.
Estimated total
GetYourPermit researched range at 750 sq ft
$3,700 – $8,100
This estimate combines our fee-schedule research and project-planning experience. Actual charges vary by parcel, plans, valuation, utilities, and outside agencies.
Typical planning amount
$5,700
Modeled at the 600 sq ft reference.
Where the money goes
These are fee components within the permit process, not separate approvals.
- Separate planning / zoning fee$350 – $650
Shown only where the City bills Planning or zoning review as a separate fee.
- Building plan check$1,200 – $2,450
The Building Division’s review of the drawings; part of the Building Permit process.
- Building permit issuance$1,350 – $2,900
The permit issuance charge; where plan check is bundled, the combined amount is carried here.
- Separate trade permits$400 – $850
Shown separately only where electrical, plumbing, or mechanical permits are billed outside a combination permit.
- School district fees$0 – $450
Possible school-district developer fees based on current thresholds and scope.
- Utility fees$150 – $350
Possible water, sewer, electrical, meter, or capacity-related charges.
- Processing, inspection & records$150 – $250
Fixed processing, inspection, records, and administrative charges.
- Surcharges, taxes & state fees$100 – $200
Percentage surcharges, construction taxes, and State-mandated charges.
The darker segment is the low end of the range; the full bar is the high end.
Published fee references
Building permit issuance
The permit issuance charge; where plan check is bundled, the combined amount is carried here.
| Fee | Amount | Basis | Source |
|---|---|---|---|
| Building permit and plan-check fees | Verify on the City’s official website | Verify on the City’s official website | How to Determine Fees for Building Permits - Information Bulletin 106Location: PDF page 1, III.A Plan Check Fee and IV.A Building Permit FeeConfirms: The official bulletin confirms the current City fee schedule is the calculation authority, but the available bulletin itself is from August 2019 and does not establish current amounts. |
These are estimates, not official fees
Use these figures for early budgeting only. They are not a quote, not a government fee determination, and not legal advice. Actual fees depend on your parcel, your plans, your construction valuation, your utility provider, and the fee schedule in force on the day your permit is issued. Confirm every number with Murrieta before you commit money.
City reference pages for verification
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