ADU permit cost and fee breakdown in Murrieta, California
An early-budgeting estimate of the permit-related fees an accessory dwelling unit is likely to incur in Murrieta. These are not official figures.
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ADU size
California generally exempts ADUs under 750 sq ft from development impact fees, so the 749 / 750 / 751 steps are worth comparing.
Estimated total
Estimated total permit fees at 750 sq ft
$7,350 – $27,250
Assumed construction valuation
$270,000
Used only to compute valuation-based fees. It is not a construction quote.
Where the money goes
- Building permit$1,200 – $3,500
The core permit issued by the city building department.
- Plan check$800 – $2,500
Review of your drawings for code compliance.
- Impact fees$3,000 – $12,000
Development impact fees. Often waived for ADUs under 750 sq ft.
- School district fees$0
Developer fees charged by the local school district.
- Utility connection$2,000 – $8,000
Water, sewer, and electrical connection or capacity charges.
- Inspection$300 – $1,000
Field inspections during construction.
- Technology & surcharges$50 – $250
Records, technology, and general plan surcharges.
The darker segment is the low end of the range; the full bar is the high end.
Read before you budget
- Most fee lines are working estimates rather than verified published city rates. Confirm every line with the city before budgeting.
- Totals do not vary by ADU size for this city, so the size selector will not change the estimate.
Fee items
Building permit
The core permit issued by the city building department.
City building permit fee
$1,200 – $3,500
Estimated range
Accessory Dwelling Units | Murrieta, CA
Plan check
Review of your drawings for code compliance.
City plan check fee
$800 – $2,500
Estimated range
Accessory Dwelling Units | Murrieta, CA
Impact fees
Development impact fees. Often waived for ADUs under 750 sq ft.
California ADU local impact-fee exemption for units under 750 sq ft
$0
Flat fee
California ADU Impact Fee Calculator — Are My ADU Fees Exempt?City/local impact fee for ADUs over 750 sq ft
$3,000 – $12,000
Estimated range
California ADU Impact Fee Calculator — Are My ADU Fees Exempt?
School district fees
Developer fees charged by the local school district.
School district fee
Rate not published
Per square foot
Accessory Dwelling Units | Murrieta, CA
Utility connection
Water, sewer, and electrical connection or capacity charges.
Utility connection or capacity fees
$2,000 – $8,000
Estimated range
Accessory Dwelling Units | Murrieta, CA
Inspection
Field inspections during construction.
Inspection fee
$300 – $1,000
Estimated range
Accessory Dwelling Units | Murrieta, CA
Technology & surcharges
Records, technology, and general plan surcharges.
Technology fee
$50 – $250
Estimated range
Accessory Dwelling Units | Murrieta, CA
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