Building permits in Walnut Creek, CA
Walnut Creek (Contra Costa County) follows California's statewide codes, but runs its own permit intake, forms, fees, and review timelines through its building department. Here's the general picture for the trades — and where to confirm the specifics.
Walnut Creek is fully online for permits: every building permit type is applied for through the city's Accela-based Online Permit Portal — no paper or emailed applications, no over-the-counter issuance — with the Development Services Counter at City Hall available for in-person help. The 2025 California Building Standards Code applies to applications made on or after January 1, 2026, and building fees live in the Master Fee Schedule for FY 2026 & 2027. Qualifying commercial tenant improvements can be approved in a single 90-minute virtual Commercial Express Review meeting.
Verified local data — Walnut Creek
Every fact below is sourced from a public City of Walnut Creek document or portal page. Each carries the source URL and the date we last verified it.
- Permit portal
- Online Permit Portal (Accela Citizen Access)
verified Aug 9, 2026 · source · All building permit types are applied for through the portal; the city links the Accela-hosted URL directly (no stable city shortlink), and a registered portal account is required to apply
- Submission methods
Online
verified Aug 9, 2026 · source · Fully online — the city no longer accepts paper or emailed permit applications and does not issue permits over the counter; the Development Services Counter (City Hall, 2nd Floor) offers appointments and walk-ins for assistance with the process
- Adopted code edition
2025 California Building Standards Code
verified Aug 9, 2026 · source · The 2025 codes were published July 1, 2025 and became applicable to all building permit applications made on or after January 1, 2026
- Fee schedule
- City of Walnut Creek Master Fee Schedule FY 2026 & FY 2027 — Community Development / Building Division fees
verified Aug 9, 2026 · source · The schedule is stated by fiscal years (FY2026 & FY2027) with no calendar effective date; a 3% service fee applies to all credit/card payments
Other local notes
Development Services Counter: City Hall, 2nd Floor — open Monday–Thursday 8:30 AM–12 PM and 1–4 PM for appointments or walk-ins; staff assist with the permit process.
verified Aug 9, 2026 · source
Building staff: (925) 943-5834 · BuildingTech@walnutcreekca.gov · City Hall, 1666 North Main Street, Walnut Creek, CA 94596. Fridays: remote services only.
verified Aug 9, 2026 · source
Permit issuance requires the signature of the legal property owner or a California licensed contractor; an agent for either party may sign with written authorization submitted with the application.
verified Aug 9, 2026 · source
Inspections are requested online through a registered Accela account linked to the project — schedule by midnight for next-day service.
verified Aug 9, 2026 · source
Commercial Express Review: qualifying commercial tenant-improvement projects can be approved in a single 90-minute virtual meeting — Tuesdays, by appointment, with a 50% plan-review fee surcharge.
verified Aug 9, 2026 · source
Official building department
City of Walnut Creek Community Development — Building DivisionVerified Walnut Creek specifics are shown above. For project-specific fees, timelines, and counter staff, this department is the authority.
Permits by trade in Walnut Creek
Electrical permits
Service panel upgrades · Rewires and circuit additions · EV charger installs →
Plumbing permits
Water heater replacement · Repipes · Sewer line repair →
HVAC permits
AC / furnace changeouts · Heat pump installs · Mini-split systems →
ADU permits
New detached ADU · Garage or accessory-structure conversion · Junior ADU (JADU) within the existing home →
Solar permits
Rooftop solar PV systems · Battery energy storage (ESS) · Solar + storage retrofits →
Roofing permits
Full roof replacement (tear-off) · Re-roof / overlay where allowed · Structural sheathing or deck repair →
Common jobs in Walnut Creek
Each job below is combined with Walnut Creek's verified permit data — portal, fee schedule, and adopted code edition.
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