Lake County Building Permit Guide (Unincorporated Area)

Permit Authority

All properties within the unincorporated territory of Lake County. The incorporated cities of Clearlake and Lakeport maintain separate permit authority within city limits.

Department

Lake County Community Development Department, Building Safety Division

Address

255 N Forbes Street, Lakeport, CA 95453

Phone

(707) 263-2382

Email

William.Collins@lakecountyca.gov , Lauri.Ensley@lakecountyca.gov , Dana.Hueners@lakecountyca.gov

Website

https://www.lakecountyca.gov/444/Building-Safety

Online Permit Portal

Application Process

1. Check zoning, parcel constraints, and site conditions before applying, including GIS, septic or well, floodplain, HOA, and access issues where relevant.
2. Prepare the online application package with the project name and description, project address, owner name and address, APN, contact email and phone, and required plans and supporting documents.
3. Obtain outside-agency clearances that apply to the site before permit issuance, which may include sewer or water district, Environmental Health, fire district, school district, Public Works or Caltrans, Water Resources, or Air Quality approvals.
4. Submit the application through the county's OpenGov portal. The county states building permit submittals are accepted online only.
5. Wait for planning clearance and agency review. The county says initial planning and zoning clearance may take up to 10 business days, and first plan review for larger projects is typically about 4 to 6 weeks.
6. Pay fees when requested. The county instructs applicants not to pay until staff confirms the correct fee amount.
7. Receive approved plans in the portal, pull the permit, and request inspections as work progresses.
8. Obtain final inspection approval before occupancy and before the permit expires.

Typical processing time: Up to 10 business days for planning clearance; about 4-6 weeks for first plan review; about 2 weeks for revisions or re-checks.

Source: Lake County Community Development Department, Building Safety Division

General Requirements

Lake County states that all construction activity, from initial grading through interior improvements, alterations, and most repairs, requires a building permit unless specifically exempted by the adopted California Building Code and county zoning ordinance. The county also requires permits before constructing, enlarging, altering, repairing, moving, demolishing, or changing occupancy of a building or structure, or installing, altering, replacing, removing, or converting regulated electrical, gas, mechanical, or plumbing systems.

Required Documents

• Building permit application
• Project name and description
• Project address
• Owner name and address
• APN
• Contact email and phone
• Site plan
• Construction plans and supporting documents
• Fire suppression plans if required
• Photovoltaic plans if applicable
• Construction waste management plan
• Title 24 energy documents
• Structural calculations if engineered
• Additional outside-agency approvals where applicable

Permit validity

Application expires if no permit is issued within 180 days of submittal. After issuance, county materials say a permit expires after 365 days of non-activity, but another handout states an inspection must occur within 180 days of permit issuance or the last inspection to avoid expiration. Written extensions of up to 180 days may be available for justifiable cause.

Building code

County documents reference the 2022 California Building Standards Code package, including the 2022 California Building, Residential, Electrical, Plumbing, Mechanical, Green Building, Energy, Fire, Administrative, Historical Building, and Existing Building codes, plus county design criteria and related local requirements.

Owner-builder

The county permit application includes California owner-builder declarations under Business and Professions Code section 7044. Owner-builders assume responsibility for the full project and may become responsible as an employer if they hire unlicensed workers.

Contractor requirements

The permit application requires either licensed contractor information or a signed statement claiming an exemption from California contractor licensing law, and cites Business and Professions Code section 7031.5.

Fees

Minimum permit fee

$160.00 minimum for combination building permits on projects up to $1,000,000 valuation and for many remodel or repair permit categories

Plan check fee

65% of the combined building permit fee; AB 1332 preapproved plans are 33% of the combined building permit fee

Permit fee formula

Combination building permit fee is valuation-based. For projects up to $1,000,000 valuation, the county lists 2.6% of building valuation calculated from the ICC table, with a $160 minimum. For projects over $1,000,000 valuation, it lists 1.5% of building valuation. For remodels and repairs without new square footage, it lists 3% of construction cost or approved labor and material estimate, with a $160 minimum.

Reinspection fee

Additional inspections and reinspections are $99.87 per hour effective July 12, 2025. Permit extension request fee is $51.35.

Penalty (no permit)

Expired permits under one year are 25% of the current permit fee with a $160 minimum; one to five years are 50% of the current permit fee with a $160 minimum; five years and over require a new permit. Administrative penalties under Chapter 5 start at $130 for a first violation.

Payment note

The county says zoning clearance and plan review fees are due at application submittal, while building permit, CBSC, and SMA fees are due at permit issuance. OpenGov payments can be made online, and in-person payments are also available in Lakeport.

Fees change. Verify current amounts at the official fee schedule.

Work That Does NOT Require a Permit

• Accessory structures less than 120 square feet and less than 12 feet high do not require a building permit, but still require zoning clearance
• Some grading work may be exempt from a grading permit, subject to the county's grading questionnaire and Chapter 30 exemptions
• Driveway encroachment permits are not required if the driveway is on a non-county-maintained road

Important: Lake County does not publish one consolidated webpage listing every building permit exemption. County materials instead direct applicants to the adopted California Building Code and county zoning rules, and note that separate zoning, floodplain, environmental health, fire, encroachment, or HOA approvals may still apply even when a building permit is not required.

Inspections

How to Schedule

• OpenGov Public Portal (online)
• (707) 263-2382 (phone)

Scheduling deadline

The county's older SFD handout says to request inspections at least 24 hours in advance. OpenGov allows online scheduling until 7:00 AM on the inspection day.

Inspection hours

Monday-Friday, 8:00 AM to 4:30 PM

Typical inspection sequence: For residential work, county materials list foundation, ground or under-floor plumbing, pre-slab, girder for raised floors, underfloor insulation, pre-wrap, framing, wall or ceiling insulation, gypsum wallboard, stucco scratch coat, and final inspection. Required inspections vary by project scope.

OpenGov emails inspection results, comments, and uploaded photos automatically.

Additional Resources

• Building code: County documents reference the 2022 California Building Standards Code package, including the 2022 California Building, Residential, Electrical, Plumbing, Mechanical, Green Building, Energy, Fire, Administrative, Historical Building, and Existing Building codes, plus county design criteria and related local requirements.
• Verify contractor license: CSLB License Lookup
• Zoning information: View zoning info
• Owner-builder rules: View rules
• GIS Viewer
• Accessory Structures
• Grading Step One
• Driveway Encroachment
• Floodplain Management Regulations
• Building Permit Application
• License lookup guide: California Contractor License Requirements
• Contract template: California Homeowner-Contractor Agreement