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§ 02
When a permit is required
Permit triggers and exempt work for Napa
City permit is required unless the work falls within the City's listed permit exemptions based on CBC section 105.2. The City also notes over-the-counter permits are commonly used for electrical service change-outs, furnace and water heater change-outs, and roofing.
One-story detached accessory structures used as tool and storage sheds, playhouses, and similar uses not over 120 square feet
Fences not over 7 feet high
Retaining walls not over 4 feet high unless supporting surcharge or impounding certain liquids
Water tanks supported directly on grade up to 5,000 gallons meeting ratio limits
Sidewalks and driveways not more than 30 inches above adjacent grade and not over a basement or story below and not part of an accessible route
Painting, papering, tiling, carpeting, cabinets, countertops, and similar finish work
Temporary motion picture, television, and theater stage sets and scenery
Certain above-ground prefabricated pools accessory to Group R-3 occupancy that are less than 24 inches deep and not more than 5,000 gallons
Minor electrical repairs and maintenance such as lamp replacement or connection of approved portable equipment
Portable heating, ventilation, and cooling equipment and certain minor mechanical replacements that do not alter approval or create unsafe conditions
Limited plumbing repairs such as clearing stoppages or repairing leaks where pipes or fixtures are not replaced or rearranged
- Exempt One-story detached accessory structures used as tool and storage sheds, playhouses, and similar uses not over 120 square feet
- Exempt Fences not over 7 feet high
- Exempt Retaining walls not over 4 feet high unless supporting surcharge or impounding certain liquids
- Exempt Water tanks supported directly on grade up to 5,000 gallons meeting ratio limits
- Exempt Sidewalks and driveways not more than 30 inches above adjacent grade and not over a basement or story below and not part of an accessible route
- Exempt Painting, papering, tiling, carpeting, cabinets, countertops, and similar finish work
- Exempt Temporary motion picture, television, and theater stage sets and scenery
- Exempt Certain above-ground prefabricated pools accessory to Group R-3 occupancy that are less than 24 inches deep and not more than 5,000 gallons
- Exempt Minor electrical repairs and maintenance such as lamp replacement or connection of approved portable equipment
- Exempt Portable heating, ventilation, and cooling equipment and certain minor mechanical replacements that do not alter approval or create unsafe conditions
- Exempt Limited plumbing repairs such as clearing stoppages or repairing leaks where pipes or fixtures are not replaced or rearranged
Note: The City states all exempt work must still comply with applicable codes and ordinances.
Required documents
- Completed application with accurate work description
- 3 to 6 plan sets if plans are required
- Owner-builder disclosure if applicable
- Separate fire plan sets where sprinklers, alarms, or hood systems apply
- Building code
- City pages are inconsistent. The Building Division page says the City adopted the 2025 California Building Code effective January 1, 2025, while the permit-information page says permits applied for on or after January 1, 2026 must comply with adopted 2025 California Codes.
- Owner-builder
- Owner-builders must provide a completed owner-builder disclosure form when applicable.
- Contractor requirements
- Unless the property owner is doing the work personally, the contractor must hold an active California contractor license. The City FAQ also states all contractors and subcontractors performing construction work in the City must have an active City of Napa business license.
Source: City of Napa Community Development Department, Building Division ↗
§ 03
Application process
Typical processing: Express review takes about 10 to 15 minutes of review time for qualifying minor projects. Full review first review is typically up to 21 business days, and resubmittals are typically up to 14 business days.
- 01 Contact the Building Division first to confirm whether your project qualifies for over-the-counter, express review, or full review and to confirm submittal requirements.
- 02 Prepare the application and plans. Over-the-counter permits require a completed application with an accurate work description. Express review typically requires a completed application plus 3 plan sets. Full review typically requires a completed application plus 3 to 6 plan sets and supporting documents.
- 03 If plans are required, submit plan sheets no smaller than 11 x 17 inches; 24 x 36 inches is preferred. If owner-builder, include the owner-builder disclosure form.
- 04 For express review, plans are reviewed at the counter for minor projects taking about 10 to 15 minutes of review time. For full review, the City states plans are reviewed within 21 business days of submittal; FAQ states first review is typically up to 21 business days and resubmittals up to 14 business days.
- 05 Pay plan review and permit fees. The fee schedule states the building plan review portion is 33% of the building permit fee and is due with plan check submittal; the remainder is due when the permit is approved.
- 06 After permit issuance, keep the approved plans, job card, and permit documents posted or available at the job site for inspections.
Typical processing time: Express review takes about 10 to 15 minutes of review time for qualifying minor projects. Full review first review is typically up to 21 business days, and resubmittals are typically up to 14 business days.
Source: City of Napa Community Development Department, Building Division ↗
§ 04
Fee schedule
Effective February 3, 2025
Fee type
Amount
01
Minimum permit fee
Residential permit processing minimum fee is $244 effective February 3, 2025
02
Plan check fee
Building plan review portion is 33% of the building permit fee and is due with plan check submittal.
03
Permit fee formula
Mixed. Some permits are flat or minimum fees; others are based on square footage, valuation, or full cost. The master fee schedule states building permit fees include plan review and inspection for listed fee categories.
04
Reinspection fee
Reinspection fee is charged per hour at full cost under the master fee schedule.
05
Penalty (no permit)
Work started without first obtaining required permits may be charged an investigation fee up to 10 times the permit cost.
The Building Department accepts checks payable to the City of Napa, credit cards except American Express with no processing fee, or exact cash.
Fees change periodically. Confirm at the official fee schedule ↗ (effective February 3, 2025) before budgeting.
§ 05
Required inspections
Scheduling and sequence
How to schedule
- 707-257-1063 (phone)
- eTRAKiT (online)
- 707-257-9540 (phone)
- Scheduling deadline
- Requests should be made at least 24 hours in advance.
- Inspection hours
- Inspections are offered Monday through Friday except City holidays.
- Time windows
- AM window: 8:00 AM-12:00 PM; PM window: 12:00 PM-4:00 PM
Typical sequence: Common sequence includes setbacks and foundation, underfloor and underground, rough trade inspections, insulation and drywall, fire prevention inspections if applicable, and final building inspection.
Source: City of Napa Community Development Department, Building Division ↗
§ 06
Frequently asked
Common questions about Napa permits
01 Do I need a building permit in Napa, CA? ▸
City permit is required unless the work falls within the City's listed permit exemptions based on CBC section 105.2. The City also notes over-the-counter permits are commonly used for electrical service change-outs, furnace and water heater change-outs, and roofing.
02 How much does a building permit cost in Napa, CA? ▸
Building permit fees in Napa, CA are set by the local building department and vary by project type and valuation. The minimum permit fee is Residential permit processing minimum fee is $244 effective February 3, 2025. Fees are calculated as: Mixed. Some permits are flat or minimum fees; others are based on square footage, valuation, or full cost. The master fee schedule states building permit fees include plan review and inspection for listed fee categories.. Plan check fee: Building plan review portion is 33% of the building permit fee and is due with plan check submittal..
03 How do I apply for a building permit in Napa, CA? ▸
To apply for a building permit in Napa, CA, follow these steps: 1. Contact the Building Division first to confirm whether your project qualifies for over-the-counter, express review, or full review and to confirm submittal requirements. 2. Prepare the application and plans. Over-the-counter permits require a completed application with an accurate work description. Express review typically requires a completed application plus 3 plan sets. Full review typically requires a completed application plus 3 to 6 plan sets and supporting documents. 3. If plans are required, submit plan sheets no smaller than 11 x 17 inches; 24 x 36 inches is preferred. If owner-builder, include the owner-builder disclosure form. 4. For express review, plans are reviewed at the counter for minor projects taking about 10 to 15 minutes of review time. For full review, the City states plans are reviewed within 21 business days of submittal; FAQ states first review is typically up to 21 business days and resubmittals up to 14 business days. 5. Pay plan review and permit fees. The fee schedule states the building plan review portion is 33% of the building permit fee and is due with plan check submittal; the remainder is due when the permit is approved. 6. After permit issuance, keep the approved plans, job card, and permit documents posted or available at the job site for inspections.
04 How long does it take to get a building permit in Napa, CA? ▸
Building permit processing times in Napa, CA typically run Express review takes about 10 to 15 minutes of review time for qualifying minor projects. Full review first review is typically up to 21 business days, and resubmittals are typically up to 14 business days.. Timelines can vary based on project complexity and current department workload.
05 What work is exempt from building permits in Napa, CA? ▸
Not all construction work requires a permit in Napa, CA. The following work is generally exempt: One-story detached accessory structures used as tool and storage sheds, playhouses, and similar uses not over 120 square feet; Fences not over 7 feet high; Retaining walls not over 4 feet high unless supporting surcharge or impounding certain liquids; Water tanks supported directly on grade up to 5,000 gallons meeting ratio limits; Sidewalks and driveways not more than 30 inches above adjacent grade and not over a basement or story below and not part of an accessible route; Painting, papering, tiling, carpeting, cabinets, countertops, and similar finish work; Temporary motion picture, television, and theater stage sets and scenery; Certain above-ground prefabricated pools accessory to Group R-3 occupancy that are less than 24 inches deep and not more than 5,000 gallons; Minor electrical repairs and maintenance such as lamp replacement or connection of approved portable equipment; Portable heating, ventilation, and cooling equipment and certain minor mechanical replacements that do not alter approval or create unsafe conditions; Limited plumbing repairs such as clearing stoppages or repairing leaks where pipes or fixtures are not replaced or rearranged. Note: The City states all exempt work must still comply with applicable codes and ordinances. When in doubt, confirm with the local building department before starting work.
06 How do I schedule a building inspection in Napa, CA? ▸
Once your permit is issued and work reaches an inspection milestone, you can schedule a building inspection in Napa, CA via: 707-257-1063, eTRAKiT, 707-257-9540. Requests should be made at least 24 hours in advance..
last verified April 2026
source City of Napa Community Development Department, Building Division ↗
entry id permits/california/napa/napa-city
Educational reference. Permit rules and fees change — confirm current requirements directly with City of Napa Community Development Department, Building Division before applying. Jaspector is not legal advice.