ADU permit cost and fee breakdown in Stockton, California
An early-budgeting estimate of the permit-related fees an accessory dwelling unit is likely to incur in Stockton. 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
$7,850 – $30,950
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 – $4,000
The core permit issued by the city building department.
- Plan check$800 – $2,500
Review of your drawings for code compliance.
- Impact fees$2,500 – $10,000
Development impact fees. Often waived for ADUs under 750 sq ft.
- School district fees$1,500 – $5,500
Developer fees charged by the local school district.
- Utility connection$1,500 – $7,500
Water, sewer, and electrical connection or capacity charges.
- Inspection$300 – $1,200
Field inspections during construction.
- Technology & surcharges$50 – $250
Records, technology, and general plan surcharges.
- Other$0
Fees that do not fit the categories above.
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.
- Some fee items appear more than once, so category totals may double count.
- 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 permit fees (calculated at application submittal)
$1,200 – $4,000
Estimated range
FACT SHEET FOR CITY OF STOCKTON ADUs
Plan check
Review of your drawings for code compliance.
Plan Check Fees (Estimated Fallback)
$800 – $2,500
Estimated range
Impact fees
Development impact fees. Often waived for ADUs under 750 sq ft.
City impact fees for ADUs under 750 sq ft
$0
Flat fee
FACT SHEET FOR CITY OF STOCKTON ADUsCity impact fees for ADUs 750 sq ft and larger
$2,500 – $10,000
Estimated range
FACT SHEET FOR CITY OF STOCKTON ADUs
School district fees
Developer fees charged by the local school district.
School district developer fees
$1,500 – $5,500
Estimated range
FACT SHEET FOR CITY OF STOCKTON ADUs
Utility connection
Water, sewer, and electrical connection or capacity charges.
Separate utility connection fees
$1,500 – $7,500
Estimated range
FACT SHEET FOR CITY OF STOCKTON ADUs
Inspection
Field inspections during construction.
Inspection fees
$300 – $1,200
Estimated range
FACT SHEET FOR CITY OF STOCKTON ADUs
Technology & surcharges
Records, technology, and general plan surcharges.
Technology and Records Surcharges (Estimated Fallback)
$50 – $250
Estimated range
Other
Fees that do not fit the categories above.
ADU plans available free of charge
$0
Flat fee
Accessory and Junior Accessory Dwelling Units - Stockton, CAADU Plans (Pre-approved / Free Options)
$0
Flat fee
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 Stockton before you commit money.
City reference pages for verification