County Building Permits
Tuolumne County, CA - 2026 Building Permit Guide
How to apply for a building permit in unincorporated Tuolumne County, California. Permit authority, application steps, fees, and inspection requirements.
Permit Authority
All properties within the unincorporated areas of Tuolumne County. Projects inside the incorporated City of Sonora are handled by the City of Sonora.
- Department
- Building and Safety Division, Tuolumne County Community Development Department
- Address
- 2 South Green St., Sonora, CA 95370-4618 (mailing); A.N. Francisco Building, 48 Yaney Ave., Floors 3-4, Sonora, CA 95370 (counter service)
- Phone
- (209) 533-5633
Online Permit Portal
Platform: OpenGov • Account required: Yes • Submission: Online only
Additional resources:
Application Process
- Confirm the project type with the County if you are unsure whether it needs a building permit or whether owner-builder limits apply.
- Start a new permit in OpenGov by selecting the county's building-permit application link.
- Upload construction plans and supporting documents for any plans-required project.
- Pay required application, plan review, and deposit fees listed in the county fee schedules.
- Wait for plan review and respond to completeness or correction comments if requested.
- Request inspections as work progresses by calling the county inspection request line.
- Complete final inspection and any occupancy closeout steps required for the permit.
Typical processing time: For pre-approved plans, the county states review typically starts within 5-15 business days after intake.
Source: Building and Safety Division, Tuolumne County Community Development Department
General Requirements
The county states building permits are reviewed for all construction and remodeling projects in unincorporated Tuolumne County.
Required Documents
- OpenGov permit application with project details
- Construction plans and digital supporting documents for plans-required projects
- Plot plan package for many dwelling, addition, accessory, and development projects
- Owner authorization or agent form when the project is not owner-submitted
- Contractor license documentation when applicable
- Special District Authorization form for projects in affected districts or associations
- Permit validity
- The county does not publish a single concise expiration rule in the reviewed public materials, but it references permit renewals and a renewal fee for expired permits.
- Building code
- 2025 California Building Standards Code
- Owner-builder
- Owner-builder status is accepted only within California owner-builder limits, and the county requires disclosure and identity or ownership verification forms.
- Contractor requirements
- Permits are issued to owner-builders or contractors, and contractors must hold a current California license.
Fees
- Minimum permit fee
- $177 for water heater permits, plus any applicable inspection line items
- Plan check fee
- Plan review is typically 50% of permit fee for residential projects and 65% for commercial projects, with separate plan review deposit schedules also posted by the county.
- Permit fee formula
- Residential permit fees are often square-foot based, while commercial permits use base fees plus square-foot, trade, and inspection-hour charges depending on permit class.
- Reinspection fee
- $279.75; weekend or after-hours inspections are $734.00 plus $175.25 per hour over 4 hours
- Penalty (no permit)
- County FAQ materials describe work-without-permit penalties that can range from a 50% deposit adjustment up to 4x permit fee depending on project size.
- Payment note
- OpenGov is used for permit submission and payment collection. The county also posts separate building plan review deposit schedules and related fee schedules that applicants should review before submittal.
Fees change. Verify current amounts at the official fee schedule.
Work That Does NOT Require a Permit
Contact the Building and Safety Division, Tuolumne County Community Development Department to confirm whether your project requires a permit before starting work.
Inspections
How to Schedule
- (209) 533-5940 (phone)
- Scheduling deadline
- Call before 3:00 PM on the day before the requested inspection.
- Inspection hours
- Monday-Friday, 8:00 AM to 4:00 PM
Typical inspection sequence: Inspection flow depends on the project scope. County materials reference plan review, construction inspections during the work, and final inspection items such as utility hookups, grading or drainage, occupancy readiness, and correction signoff.
Additional Resources
- Building code: 2025 California Building Standards Code
- Verify contractor license: CSLB License Lookup
- Zoning information: View zoning info
- Building and Safety Information Page
- Owner Authorization Form
- Plot Plan Checklist
- Traffic Impact Mitigation Fees
- Site Review Permit Instructions
- Planning Department
- License lookup guide: California Contractor License Requirements
- Contract template: California Homeowner-Contractor Agreement
- California hub: California Contractor License & Permit Hub
Information on this page was last verified: March 2026. Permit rules and fees change — confirm current requirements directly with the Building and Safety Division, Tuolumne County Community Development Department before applying.
Frequently Asked Questions
Tuolumne County Building Permit FAQ
- Do I need a building permit in unincorporated Tuolumne County, CA?
- The county states building permits are reviewed for all construction and remodeling projects in unincorporated Tuolumne County.
- How much does a building permit cost in unincorporated Tuolumne County, CA?
- The minimum permit fee is $177 for water heater permits, plus any applicable inspection line items. Fees are calculated as: Residential permit fees are often square-foot based, while commercial permits use base fees plus square-foot, trade, and inspection-hour charges depending on permit class.. Plan check fee: Plan review is typically 50% of permit fee for residential projects and 65% for commercial projects, with separate plan review deposit schedules also posted by the county..
- How do I apply for a building permit in unincorporated Tuolumne County, CA?
- 1. Confirm the project type with the County if you are unsure whether it needs a building permit or whether owner-builder limits apply. 2. Start a new permit in OpenGov by selecting the county's building-permit application link. 3. Upload construction plans and supporting documents for any plans-required project. 4. Pay required application, plan review, and deposit fees listed in the county fee schedules. 5. Wait for plan review and respond to completeness or correction comments if requested. 6. Request inspections as work progresses by calling the county inspection request line. 7. Complete final inspection and any occupancy closeout steps required for the permit.
- How long does it take to get a building permit in unincorporated Tuolumne County, CA?
- Typical processing time is For pre-approved plans, the county states review typically starts within 5-15 business days after intake..
- How do I schedule a building inspection in unincorporated Tuolumne County, CA?
- Inspections can be scheduled via: (209) 533-5940. Call before 3:00 PM on the day before the requested inspection..
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