Humboldt County, CA — 2026 Building Permit Guide

On this page 6

§ 01

Permit authority

Humboldt County Planning & Building Department, Building Division

Street address

825 5th Street, Eureka, CA 95501

Phone

(707) 445-7245

planningbuilding@co.humboldt.ca.us

Coverage

The Humboldt County Building Department has jurisdiction over all unincorporated areas of Humboldt County and excludes the incorporated cities of Eureka, Arcata, Trinidad, Rio Dell, Fortuna, Ferndale, and Blue Lake.

Online portal

Accela Citizen Access (ACA)

Accela

Website

Department website

Additional resources

§ 02

When a permit is required

Permit triggers and exempt work for Humboldt County

Regular building permits are required for projects such as new single-family homes, home remodels, ADUs, tenant improvements, commercial buildings, manufactured homes, Alternative Owner-Builder residences, and similar work not exempt under Humboldt County Code section 331-11(a)(4) or CBC section 105.2. All fences over 6 feet require a permit in Humboldt County.

Scope of work

Permit?

Work described as exempt under Humboldt County Code section 331-11(a)(4) and CBC section 105.2

Exempt

Fences not over 6 feet high under Humboldt County's stricter local rule

Exempt

Exempt Work described as exempt under Humboldt County Code section 331-11(a)(4) and CBC section 105.2
Exempt Fences not over 6 feet high under Humboldt County's stricter local rule

Note: Humboldt does not publish a single county webpage restating the full exemption list in plain language. The county warns that CBC would exempt fences up to 7 feet, but Humboldt County Code only exempts fences up to 6 feet, and the most restrictive rule applies. Even when a building permit is not required, zoning, grading, floodplain, environmental health, fire-safe, utility, and other agency approvals may still apply.

Required documents

Building Application or Over the Counter Building Application
Proof of ownership by grant deed
Agent authorization if applicable
Construction documents in PDF
Site plan
Construction plans
Floor plans
Elevations
Grading plan if applicable
Soils report if applicable
Truss calculations if applicable
Flood elevation certificate if applicable
Engineering certifications if applicable
Septic design if applicable
Energy calculations if applicable
PV plans if applicable
Construction waste management plan if applicable
MWELO form if applicable
Survey form if applicable

Building code: The 2025 California Building Standards Code became effective January 1, 2026, and applications submitted on or after that date must comply with the 2025 code cycle, including the 2025 California Building, Residential, Electrical, Mechanical, Plumbing, Energy, Wildland-Urban Interface, Existing Building, Historical Building, and CALGreen codes.
Permit validity: A permit expires if work does not commence within 180 days of issuance or if work is suspended or abandoned for 180 days after commencement. The expiration period may be extended once by an inspection within the initial 180 days or by written request approved by the Building Official.
Owner-builder: Humboldt publishes an Owner-Builder Notice to Property Owner form and will not issue a building permit until the property owner completes and signs the required acknowledgment. The form warns that owner-builders become the responsible party of record and may face employer and liability obligations.
Contractor requirements: Contractors must be licensed and bonded in California and list their license number on permits and contracts. Fast Track and SolarAPP permitting is limited to California licensed contractors, or applicants hiring one.

Source: Humboldt County Planning & Building Department, Building Division ↗

§ 03

Application process

Typical processing: The county does not publish a current general turnaround estimate for regular permits. An older residential handout says plan review may take about 3 to 8 weeks depending on application volume.

01

Determine whether the proposed work needs a permit and review Humboldt County Code section 331-11(a)(4) and CBC section 105.2 for exemptions, including the county's stricter 6-foot fence rule.
02

Gather a complete submittal package, including a Building Application or Over the Counter Building Application, proof of ownership by grant deed, and all required construction documents.
03

Create an Accela account and upload the full PDF package using the county's naming conventions. If acting for the owner, upload signed agent authorization or a contract with the owner.
04

Pay the preliminary application fee or deposit online through Accela by credit card or e-check.
05

Complete a preliminary site inspection if required. Over-the-counter permits generally skip this step, but new structures, footprint expansions, and extensive interior remodels commonly require a presite inspection.
06

Respond to plan-check comments and upload revisions until the application clears code review.
07

After approval, pay remaining permit fees, obtain the issued permit, keep permit documents on site, and call for required inspections through Accela, the online inspection form, or the inspection phone line.

Typical processing time: The county does not publish a current general turnaround estimate for regular permits. An older residential handout says plan review may take about 3 to 8 weeks depending on application volume.

Source: Humboldt County Planning & Building Department, Building Division ↗

§ 04

Fee schedule

Effective 2026

Fee type

Amount

Minimum permit fee

$242.00

Plan check fee

Project-specific under the Building Inspection Fees attachment. Plan check-fast check is 85% of the conventional plan check fee, third and later reviews are billed at the full-burden hourly rate, and energy plan check adders are $148.00 residential and $222.00 commercial.

Permit fee formula

Mixed schedule. Humboldt uses unit valuation and square-foot schedules for many residential project types, lineal-foot and cubic-foot schedules for some items, and valuation or contract-price brackets for others.

Reinspection fee

Inspections for permits issued 5 or more years before the requested inspection are $242.00. Inspections without a specific fee are charged at the fully burdened hourly rate with a 1/2-hour minimum.

Penalty (no permit)

Special investigation fees and code compliance mitigation fees are double fees. Permit or plan check renewal when the same code cycle remains in effect is 50% of the original permit fees.

Applicants can submit digital pre-applications and pay the application fee or deposit online through Accela by credit card or e-check. The county states the bulk of building permit fees is collected at permit issuance.

Fees change periodically. Confirm at the official fee schedule ↗ (effective 2026) before budgeting.

§ 05

Required inspections

Scheduling and sequence

How to schedule

Accela Citizen Access (online)
Inspection web form (online)
(707) 445-7244 (phone)
(707) 445-7245 (phone)

Scheduling deadline: Phone inspection requests must be received by 3:00 PM on the business day before the requested inspection date. Call between 8:30 AM and 9:30 AM on the day of inspection if a specific meeting time is needed.
Inspection hours: Inspectors generally work Monday through Friday in areas close to Eureka, with outlying communities assigned to specific route days. In-person counter hours are 8:30 AM to 2:00 PM Monday through Thursday, with walk-in services closed Fridays.

Typical sequence: Typical sequence moves from presite inspection to foundation, floor, rough-out, insulation, lath or gypsum board, final building, and final trade inspections, with required stages varying by project. Each construction stage generally must be approved before work proceeds to the next stage.

Source: Humboldt County Planning & Building Department, Building Division ↗

§ 06

Frequently asked

Common questions about unincorporated Humboldt County permits

01 Do I need a building permit in unincorporated Humboldt County, CA? ▸

02 How much does a building permit cost in unincorporated Humboldt County, CA? ▸

Building permit fees in unincorporated Humboldt County, CA are set by the local building department and vary by project type and valuation. The minimum permit fee is $242.00. Fees are calculated as: Mixed schedule. Humboldt uses unit valuation and square-foot schedules for many residential project types, lineal-foot and cubic-foot schedules for some items, and valuation or contract-price brackets for others.. Plan check fee: Project-specific under the Building Inspection Fees attachment. Plan check-fast check is 85% of the conventional plan check fee, third and later reviews are billed at the full-burden hourly rate, and energy plan check adders are $148.00 residential and $222.00 commercial..

03 How do I apply for a building permit in unincorporated Humboldt County, CA? ▸

To apply for a building permit in unincorporated Humboldt County, CA, follow these steps: 1. Determine whether the proposed work needs a permit and review Humboldt County Code section 331-11(a)(4) and CBC section 105.2 for exemptions, including the county's stricter 6-foot fence rule. 2. Gather a complete submittal package, including a Building Application or Over the Counter Building Application, proof of ownership by grant deed, and all required construction documents. 3. Create an Accela account and upload the full PDF package using the county's naming conventions. If acting for the owner, upload signed agent authorization or a contract with the owner. 4. Pay the preliminary application fee or deposit online through Accela by credit card or e-check. 5. Complete a preliminary site inspection if required. Over-the-counter permits generally skip this step, but new structures, footprint expansions, and extensive interior remodels commonly require a presite inspection. 6. Respond to plan-check comments and upload revisions until the application clears code review. 7. After approval, pay remaining permit fees, obtain the issued permit, keep permit documents on site, and call for required inspections through Accela, the online inspection form, or the inspection phone line.

04 How long does it take to get a building permit in unincorporated Humboldt County, CA? ▸

Building permit processing times in unincorporated Humboldt County, CA typically run The county does not publish a current general turnaround estimate for regular permits. An older residential handout says plan review may take about 3 to 8 weeks depending on application volume.. Timelines can vary based on project complexity and current department workload.

05 What work is exempt from building permits in unincorporated Humboldt County, CA? ▸

Not all construction work requires a permit in unincorporated Humboldt County, CA. The following work is generally exempt: Work described as exempt under Humboldt County Code section 331-11(a)(4) and CBC section 105.2; Fences not over 6 feet high under Humboldt County's stricter local rule. Note: Humboldt does not publish a single county webpage restating the full exemption list in plain language. The county warns that CBC would exempt fences up to 7 feet, but Humboldt County Code only exempts fences up to 6 feet, and the most restrictive rule applies. Even when a building permit is not required, zoning, grading, floodplain, environmental health, fire-safe, utility, and other agency approvals may still apply. When in doubt, confirm with the local building department before starting work.

06 How do I schedule a building inspection in unincorporated Humboldt County, CA? ▸

Once your permit is issued and work reaches an inspection milestone, you can schedule a building inspection in unincorporated Humboldt County, CA via: Accela Citizen Access, Inspection web form, (707) 445-7244, (707) 445-7245. Phone inspection requests must be received by 3:00 PM on the business day before the requested inspection date. Call between 8:30 AM and 9:30 AM on the day of inspection if a specific meeting time is needed..

last verified April 2026 source Humboldt County Planning & Building Department, Building Division ↗ entry id permits/california/humboldt/unincorporated

Report a correction

Educational reference. Permit rules and fees change — confirm current requirements directly with Humboldt County Planning & Building Department, Building Division before applying. Jaspector is not legal advice.

Unincorporated Humboldt County