Humboldt County, CA - 2026 Building Permit Guide

Permit Authority

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.

Department

Humboldt County Planning & Building Department, Building Division

Address

825 5th Street, Eureka, CA 95501

Phone

(707) 445-7245

Email

planningbuilding@co.humboldt.ca.us , accelasupport@co.humboldt.ca.us

Website

https://humboldtgov.org/153/Building-Inspection

Online Permit Portal

Application Process

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.

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

General Requirements

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.

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

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.

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.

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.

Fees

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.

Payment note

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. Verify current amounts at the official fee schedule (effective 2026).

Work That Does NOT Require a Permit

• 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

Important: 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.

Inspections

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 inspection 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.

Additional Resources

• 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.
• Zoning information: View zoning info
• Owner-builder rules: View rules
• First-Time Permit Roadmap
• Construction Documents
• Building Codes
• Resource Library
• Building Division Forms and Handouts
• GIS
• License lookup guide: California Contractor License Requirements
• Contract template: California Homeowner-Contractor Agreement
• California hub: California Contractor License & Permit Hub

Frequently Asked Questions

Humboldt County Building Permit FAQ

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

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.

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

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..

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

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.

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

Typical processing time is 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..

What work is exempt from building permits 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.

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

Inspections can be scheduled 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..