ADU permit cost and fee breakdown in Healdsburg, California
GetYourPermit’s researched permit-fee range for a detached accessory dwelling unit in Healdsburg, 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
$6,250 – $13,450
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
$9,250
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 – $750
Shown only where the City bills Planning or zoning review as a separate fee.
- Building plan check$1,400 – $3,050
The Building Division’s review of the drawings; part of the Building Permit process.
- Building permit issuance$1,550 – $3,350
The permit issuance charge; where plan check is bundled, the combined amount is carried here.
- Separate trade permits$550 – $1,200
Shown separately only where electrical, plumbing, or mechanical permits are billed outside a combination permit.
- School district fees$2,000 – $4,000
Possible school-district developer fees based on current thresholds and scope.
- Utility fees$0 – $450
Possible water, sewer, electrical, meter, or capacity-related charges.
- Processing, inspection & records$250 – $400
Fixed processing, inspection, records, and administrative charges.
- Surcharges, taxes & state fees$150 – $250
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 |
|---|---|---|---|
| Current Building Permit and plan-review fee lookup | Verify on the City’s official website | Verify on the City’s official website | FeesLocation: Live ADU page, Building Permit; live Fees page, Building Permit Fees; historical FY2025-26 scheduleConfirms: Live City pages establish the permit route and estimation inputs, but the available numerical schedule is from the ended FY2025-26 fiscal year. |
Impact fees
Development impact fees. Prohibited for ADUs of 750 sq ft or less.
| Fee | Amount | Basis | Source |
|---|---|---|---|
| ADU development-impact fee threshold and proportional rule | Verify on the City’s official website | Formula | Accessory and Junior Accessory Dwelling Units - ADUs and JADUsLocation: Live ADU page, Development Impact Fees; live Fees page, Development Fees; historical FY2025-26 schedule XIConfirms: The live City page establishes threshold and proportionate methodology, but no current FY2026-27 numerical inputs were found on the City sources reviewed. |
School district fees
Developer fees charged by the local school district.
| Fee | Amount | Basis | Source |
|---|---|---|---|
| ADU school-impact fee condition | Verify on the City’s official website | Verify on the City’s official website | Accessory and Junior Accessory Dwelling Units - ADUs and JADUsLocation: Live ADU page, School Impact FeesConfirms: The City directs larger ADU additions/new construction to the school district for a separate possible 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 Healdsburg before you commit money.
City reference pages for verification
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