ADU permit cost and fee breakdown in Santa Cruz, California
GetYourPermit’s researched permit-fee range for a detached accessory dwelling unit in Santa Cruz, 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
$4,950 – $14,750
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
$9,150
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$250 – $600
Shown only where the City bills Planning or zoning review as a separate fee.
- Building plan check$850 – $1,900
The Building Division’s review of the drawings; part of the Building Permit process.
- Building permit issuance$1,000 – $2,200
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 – $1,000
Possible school-district developer fees based on current thresholds and scope.
- Utility fees$1,800 – $6,500
Possible water, sewer, electrical, meter, or capacity-related charges.
- Processing, inspection & records$300 – $700
Fixed processing, inspection, records, and administrative charges.
- Surcharges, taxes & state fees$350 – $1,000
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 |
|---|---|---|---|
| ADU Building Permit valuation formula | From $214 | Formula | Department Fee Schedule — Effective January 1, 2026Location: Department Fee Schedule pages 9–10, Table 3A, PL-BLD1 through PL-BLD19Confirms: The current official schedule supplies each valuation bracket, the stated 6% technology surcharge, and the separately listed Green Building Program Management rate. Its two above-$1m bases conflict, so no single unconfirmed amount is computed for that bracket. |
Impact fees
Development impact fees. Prohibited for ADUs of 750 sq ft or less.
| Fee | Amount | Basis | Source |
|---|---|---|---|
| ADU impact-fee rule | From $0 | Formula | Department Fee Schedule — Effective January 1, 2026Location: Department Fee Schedule page 26, Planning and Community Development Footnote [PL-B]; page 27 impact-fee notesConfirms: The official schedule reproduces the ADU impact-fee threshold, proportionality requirement, and express exclusion of connection and capacity charges. |
| ADU public-safety impact-fee base rates | Verify on the City’s official website | Per square foot | Department Fee Schedule — Effective January 1, 2026Location: Department Fee Schedule page 27, Public Safety Impact Fee — Police Department and Fire DepartmentConfirms: The current official schedule lists both residential Public Safety Impact Fee base rates and separately states the ADU threshold/proportionality rule. |
School district fees
Developer fees charged by the local school district.
| Fee | Amount | Basis | Source |
|---|---|---|---|
| ADU school development-fee lookup | Verify on the City’s official website | Verify on the City’s official website | Accessory Dwelling Units (ADUs)Location: City ADU page, FAQs — What are the related fees?Confirms: The City explains the school-fee threshold context but the reviewed City page is not a current school-district rate source, so no numerical amount is recorded. |
Utility connection
Water, sewer, and electrical connection or capacity charges.
| Fee | Amount | Basis | Source |
|---|---|---|---|
| ADU water, sewer, and addressing-fee lookup | Verify on the City’s official website | Verify on the City’s official website | Accessory Dwelling Units (ADUs)Location: City ADU page, FAQs — related fees; water/sewer connection guidance; addressing requirements |
Surcharges, taxes & state fees
Percentage surcharges, construction taxes, and State-mandated charges.
| Fee | Amount | Basis | Source |
|---|---|---|---|
| ADU General Plan Maintenance Fee | 0.61% of valuation | Percent of valuation | Department Fee Schedule — Effective January 1, 2026Location: Department Fee Schedule page 3, PL-CP37Confirms: The current City schedule explicitly identifies the ADU rate as 0.61% and states the valuation cap used for this 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 Santa Cruz before you commit money.
City reference pages for verification
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