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§ 02
When a permit is required
Permit triggers and exempt work for Walnut Creek
Walnut Creek requires a permit before erecting, constructing, enlarging, moving, converting, demolishing, improving, installing, altering, repairing, replacing, or remodeling buildings/structures, electrical work, plumbing/drainage systems, mechanical systems, pools, spas, hot tubs, and solar systems, unless exempt. The City's public permit page also says permits are required when you add structures to property or physically change property.
Single-story detached accessory structures used as tool/storage sheds, playhouses, and similar uses not over 120 square feet
Fences not over 7 feet high
Oil derricks
Retaining walls not over 4 feet high measured from the bottom of footing to the top of wall, unless supporting a surcharge or impounding certain liquids
Water tanks on grade not over 5,000 gallons and with height-to-width ratio not over 2:1
Sidewalks and driveways not more than 30 inches above grade, not over a basement/story below, and not part of an accessible route
Painting, papering, tiling, carpeting, cabinets, counter tops, and similar finish work
Temporary motion picture, television, and theater stage sets/scenery
Certain above-ground prefabricated swimming pools accessory to Group R-3 occupancy that are under 24 inches deep and under 5,000 gallons
Shade cloth structures for nursery/agricultural purposes, excluding service systems
Swings and other playground equipment accessory to detached one- and two-family dwellings
Certain window awnings in Group R-3 and U occupancies
Nonfixed and movable fixtures/cases/racks/counters/partitions not over 5 feet 9 inches high
Certain detached decks accessory to Group R-3 occupancy not over 200 square feet, not over 30 inches above grade, not attached to a dwelling, and not serving the required exit door
Electrical minor repair work such as replacing lamps or plugging approved portable equipment into approved receptacles
Certain radio/TV transmission equipment, temporary testing systems, low-voltage/low-wattage equipment in R-3 and U occupancies, and reinstallation of attachment plug receptacles in R-3 and U occupancies
Plumbing repair work such as stoppage cleaning and leak repairs that do not involve replacement or rearrangement of valves, pipes, or fixtures
Mechanical exemptions including portable heating/ventilating/cooling equipment, certain closed piping systems within equipment, replacement of appliance components that do not alter approval, and small self-contained refrigeration systems
- Exempt Single-story detached accessory structures used as tool/storage sheds, playhouses, and similar uses not over 120 square feet
- Exempt Fences not over 7 feet high
- Exempt Oil derricks
- Exempt Retaining walls not over 4 feet high measured from the bottom of footing to the top of wall, unless supporting a surcharge or impounding certain liquids
- Exempt Water tanks on grade not over 5,000 gallons and with height-to-width ratio not over 2:1
- Exempt Sidewalks and driveways not more than 30 inches above grade, not over a basement/story below, and not part of an accessible route
- Exempt Painting, papering, tiling, carpeting, cabinets, counter tops, and similar finish work
- Exempt Temporary motion picture, television, and theater stage sets/scenery
- Exempt Certain above-ground prefabricated swimming pools accessory to Group R-3 occupancy that are under 24 inches deep and under 5,000 gallons
- Exempt Shade cloth structures for nursery/agricultural purposes, excluding service systems
- Exempt Swings and other playground equipment accessory to detached one- and two-family dwellings
- Exempt Certain window awnings in Group R-3 and U occupancies
- Exempt Nonfixed and movable fixtures/cases/racks/counters/partitions not over 5 feet 9 inches high
- Exempt Certain detached decks accessory to Group R-3 occupancy not over 200 square feet, not over 30 inches above grade, not attached to a dwelling, and not serving the required exit door
- Exempt Electrical minor repair work such as replacing lamps or plugging approved portable equipment into approved receptacles
- Exempt Certain radio/TV transmission equipment, temporary testing systems, low-voltage/low-wattage equipment in R-3 and U occupancies, and reinstallation of attachment plug receptacles in R-3 and U occupancies
- Exempt Plumbing repair work such as stoppage cleaning and leak repairs that do not involve replacement or rearrangement of valves, pipes, or fixtures
- Exempt Mechanical exemptions including portable heating/ventilating/cooling equipment, certain closed piping systems within equipment, replacement of appliance components that do not alter approval, and small self-contained refrigeration systems
Note: Walnut Creek warns that permit exemption does not authorize code violations and that planning, engineering, building, and transportation rules may still apply; some work may still need a planning approval such as a use permit.
Required documents
- WCMC 9-0.5.302 requires an application identifying the work, property, occupancy/use, valuation, and supporting plans/diagrams/computations/specifications/other data as required by the Building Official. The City also publishes project-specific submittal checklists for new single-family/ADU/duplex projects, single-family additions or remodels, and new commercial/townhome/multifamily/mixed-use buildings.
- Building code
- For applications received on or after January 1, 2026, Walnut Creek says projects must comply with the 2025 California codes, including the Building, Residential, Plumbing, Mechanical, Electrical, Energy, Green Building Standards, Wildland-Urban Interface, Fire, and Referenced Standards codes.
- Permit validity
- The City pages reviewed do not publish a single general permit-expiration rule on the public-facing building permit pages. Confirm current expiration and renewal rules directly with the Building Division before filing, especially for phased or slow-moving projects. Contact/source: https://www.walnutcreekca.gov/government/community-development-department/permits/building-permits/contact-us
- Owner-builder
- Permits may be issued to owners only if they certify proof of exemption under California Business and Professions Code Section 7044.
- Contractor requirements
- Walnut Creek states permits are issued only to state-licensed contractors or their authorized representatives, and only for work the contractor is licensed by the State to perform.
Source: City of Walnut Creek Community Development Department, Building Division ↗
§ 03
Application process
Application → plan check → issuance → inspection → final
- 01 Confirm the property is inside Walnut Creek city limits and review the applicable project checklist or bulletin on the City permit forms/submittals page.
- 02 Create or sign in to the City's Accela portal. Walnut Creek states that all permit types must be applied for through the online portal; paper and emailed building permit applications are no longer accepted.
- 03 Submit the online application with the required plans, diagrams, calculations, specifications, valuation, and other project information required by WCMC 9-0.5.302 and the City's project-specific checklists.
- 04 Pay required fees. The City states that plan check fees are due when plans are submitted, and remaining issuance/inspection-related charges are due before permit issuance. Online card payments carry a 3% service fee; check/cash options are also available.
- 05 Respond to correction comments if plan review is required. Current published estimates are about 3 to 7 days for many simple over-the-counter permits and about 8 to 28 business days for first plan review, depending on project type.
- 06 After issuance, call, email, or use the portal to request inspections before work is concealed and obtain final approval.
§ 04
Fee schedule
Walnut Creek building permit fees
Fee type
Amount
01
Minimum permit fee
The valuation-based building permit schedule starts at $80.01 for the first $2,000 of valuation. Separate miscellaneous plumbing/electrical/mechanical permits are $127 or 1.27% of contract cost, whichever is greater. Re-roof permits have a $104 minimum.
02
Plan check fee
Building plan review is 100% of the building permit fee; over-the-counter residential remodel permits with valuation of $25,000 or less are 25% of the building permit fee. Electrical, plumbing, and mechanical plan review fees are each calculated at 25% of the combined building/electrical/plumbing/mechanical permit fees; CalGreen plan review is an added 10% of the applicable plan review fees.
03
Permit fee formula
Building permit fees are valuation-based. Additions/alterations also add 20% electrical, 18% plumbing, and 17% mechanical inspection components to the building permit fee. Some permits are flat-fee or formula-based.
04
Reinspection fee
A separate reinspection fee was not clearly identified in the reviewed public fee materials.
05
Penalty (no permit)
The City fee schedule reviewed clearly publishes an additional plan review charge of $285 for incomplete plans/changes beyond the included review rounds, plus a work-without-permit investigation fee equal to the permit fee, with a minimum charge of one hour ($215 in FY2026).
Online permit payments through Accela must be paid by credit/debit card and carry a 3% service fee. The City also accepts mailed checks and in-person check/cash payments by appointment.
Fees change periodically. Confirm at the official fee schedule ↗ before budgeting.
§ 05
Required inspections
Scheduling and sequence
How to schedule
- inspectionrequest@walnutcreekca.gov (email)
- (925) 943-5833 (phone)
- https://www.walnutcreekca.gov/government/community-development-department/permits/request-a-building-inspection (online)
- Scheduling deadline
- Inspection requests must be made by midnight for typical next-day service.
- Inspection hours
- Inspection requests must be made by midnight for typical next-day service. On the inspection day, applicants must confirm the inspection/timeframe between 8:00 a.m. and 8:30 a.m. using the City's daily confirmation link on the inspection page. Building Division public hours are Monday through Thursday, 8:00 a.m. to 5:00 p.m.
- Time windows
- Inspection requests must be made by midnight for typical next-day service. On the inspection day, applicants must confirm the inspection/timeframe between 8:00 a.m. and 8:30 a.m. using the City's daily confirmation link on the inspection page. Building Division public hours are Monday through Thursday, 8:00 a.m. to 5:00 p.m.
Typical sequence: Walnut Creek requires inspections before covered work is concealed and before final approval. The exact sequence depends on project scope; in practice this usually means the applicable rough or intermediate inspections followed by final inspection, with special inspections when required. Reinspection note: Final inspections may be blocked by unresolved permit conditions such as incomplete waste-management requirements or missing outside-agency approvals. The City also notes that next-day inspections are typical but not guaranteed.
Source: City of Walnut Creek Community Development Department, Building Division ↗
§ 06
Frequently asked
Common questions about Walnut Creek permits
01 Do I need a building permit in Walnut Creek, CA? ▸
Walnut Creek requires a permit before erecting, constructing, enlarging, moving, converting, demolishing, improving, installing, altering, repairing, replacing, or remodeling buildings/structures, electrical work, plumbing/drainage systems, mechanical systems, pools, spas, hot tubs, and solar systems, unless exempt. The City's public permit page also says permits are required when you add structures to property or physically change property.
02 How much does a building permit cost in Walnut Creek, CA? ▸
Building permit fees in Walnut Creek, CA are set by the local building department and vary by project type and valuation. The minimum permit fee is The valuation-based building permit schedule starts at $80.01 for the first $2,000 of valuation. Separate miscellaneous plumbing/electrical/mechanical permits are $127 or 1.27% of contract cost, whichever is greater. Re-roof permits have a $104 minimum.. Fees are calculated as: Building permit fees are valuation-based. Additions/alterations also add 20% electrical, 18% plumbing, and 17% mechanical inspection components to the building permit fee. Some permits are flat-fee or formula-based.. Plan check fee: Building plan review is 100% of the building permit fee; over-the-counter residential remodel permits with valuation of $25,000 or less are 25% of the building permit fee. Electrical, plumbing, and mechanical plan review fees are each calculated at 25% of the combined building/electrical/plumbing/mechanical permit fees; CalGreen plan review is an added 10% of the applicable plan review fees..
03 How do I apply for a building permit in Walnut Creek, CA? ▸
To apply for a building permit in Walnut Creek, CA, follow these steps: 1. Confirm the property is inside Walnut Creek city limits and review the applicable project checklist or bulletin on the City permit forms/submittals page. 2. Create or sign in to the City's Accela portal. Walnut Creek states that all permit types must be applied for through the online portal; paper and emailed building permit applications are no longer accepted. 3. Submit the online application with the required plans, diagrams, calculations, specifications, valuation, and other project information required by WCMC 9-0.5.302 and the City's project-specific checklists. 4. Pay required fees. The City states that plan check fees are due when plans are submitted, and remaining issuance/inspection-related charges are due before permit issuance. Online card payments carry a 3% service fee; check/cash options are also available. 5. Respond to correction comments if plan review is required. Current published estimates are about 3 to 7 days for many simple over-the-counter permits and about 8 to 28 business days for first plan review, depending on project type. 6. After issuance, call, email, or use the portal to request inspections before work is concealed and obtain final approval.
04 What work is exempt from building permits in Walnut Creek, CA? ▸
Not all construction work requires a permit in Walnut Creek, CA. The following work is generally exempt: Single-story detached accessory structures used as tool/storage sheds, playhouses, and similar uses not over 120 square feet; Fences not over 7 feet high; Oil derricks; Retaining walls not over 4 feet high measured from the bottom of footing to the top of wall, unless supporting a surcharge or impounding certain liquids; Water tanks on grade not over 5,000 gallons and with height-to-width ratio not over 2:1; Sidewalks and driveways not more than 30 inches above grade, not over a basement/story below, and not part of an accessible route; Painting, papering, tiling, carpeting, cabinets, counter tops, and similar finish work; Temporary motion picture, television, and theater stage sets/scenery; Certain above-ground prefabricated swimming pools accessory to Group R-3 occupancy that are under 24 inches deep and under 5,000 gallons; Shade cloth structures for nursery/agricultural purposes, excluding service systems; Swings and other playground equipment accessory to detached one- and two-family dwellings; Certain window awnings in Group R-3 and U occupancies; Nonfixed and movable fixtures/cases/racks/counters/partitions not over 5 feet 9 inches high; Certain detached decks accessory to Group R-3 occupancy not over 200 square feet, not over 30 inches above grade, not attached to a dwelling, and not serving the required exit door; Electrical minor repair work such as replacing lamps or plugging approved portable equipment into approved receptacles; Certain radio/TV transmission equipment, temporary testing systems, low-voltage/low-wattage equipment in R-3 and U occupancies, and reinstallation of attachment plug receptacles in R-3 and U occupancies; Plumbing repair work such as stoppage cleaning and leak repairs that do not involve replacement or rearrangement of valves, pipes, or fixtures; Mechanical exemptions including portable heating/ventilating/cooling equipment, certain closed piping systems within equipment, replacement of appliance components that do not alter approval, and small self-contained refrigeration systems. Note: Walnut Creek warns that permit exemption does not authorize code violations and that planning, engineering, building, and transportation rules may still apply; some work may still need a planning approval such as a use permit. When in doubt, confirm with the local building department before starting work.
05 How do I schedule a building inspection in Walnut Creek, CA? ▸
Once your permit is issued and work reaches an inspection milestone, you can schedule a building inspection in Walnut Creek, CA via: inspectionrequest@walnutcreekca.gov, (925) 943-5833, https://www.walnutcreekca.gov/government/community-development-department/permits/request-a-building-inspection. Inspection requests must be made by midnight for typical next-day service..
last verified April 2026
entry id permits/california/contra-costa/walnut-creek
Educational reference. Permit rules and fees change — confirm current requirements directly with City of Walnut Creek Community Development Department, Building Division before applying. Jaspector is not legal advice.