Building permits in Sunnyvale, CA
Sunnyvale (Santa Clara 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.
Sunnyvale runs everything through E-OneStop Online Services — a Tyler EnerGov portal for applications, document uploads, plan-check comments, payments, and inspection scheduling — with the One-Stop Permit Center at City Hall (456 W. Olive Ave.) offering kiosks, counter help, and morning over-the-counter plan-check appointments. The 2025 California Building Standards Code applies with Sunnyvale amendments effective January 1, 2026, and the current FY 2025-26 Building Permit Fees took effect August 18, 2025.
Verified local data — Sunnyvale
Every fact below is sourced from a public City of Sunnyvale document or portal page. Each carries the source URL and the date we last verified it.
- Permit portal
- E-OneStop Online Services (Tyler EnerGov)
verified Aug 10, 2026 · source · All services are online through E-OneStop — apply for permits, search permit and plan history, upload documents, receive and respond to city comments, schedule inspections, and make payments
- Submission methods
Online · In-person
verified Aug 10, 2026 · source · Permits are processed online through E-OneStop; the One-Stop Permit Center (City Hall, 456 W. Olive Ave., 2nd floor) offers computer kiosks with counter help and morning over-the-counter plan-check appointments
- Adopted code edition
2025 California Building Standards Code (with Sunnyvale amendments)
verified Aug 10, 2026 · source · The city lists the 2025 California Building, Residential, Electrical, and companion codes as current; adopted by Ordinance 3248-25 on October 21, 2025 (Sunnyvale Municipal Code Ch. 16.16: https://ecode360.com/42720766), with local amendments effective January 1, 2026 per the council ordinance record (https://sunnyvaleca.legistar.com/LegislationDetail.aspx?ID=7682689&GUID=33162351-432E-4616-996F-0D05C49AF7D2)
- Fee schedule
- FY 2025-26 Building Permit Fees — effective August 18, 2025
verified Aug 10, 2026 · source · A FY 2026-27 Land Development fee schedule is already posted on the same page — watch for a FY 2026-27 building-fee update
Other local notes
One-Stop Permit Center: City Hall, 456 W. Olive Ave., 2nd floor; 408-730-7444; Planning, Engineering, and Building counters open weekdays 8 AM–noon and 1–5 PM (closed weekends and City holidays).
verified Aug 10, 2026 · source
Over-the-counter (OTC) building plan-check appointments run in the mornings — generate the building permit online first with the project description "OTC", submit plans, then request the in-person slot.
verified Aug 10, 2026 · source
Building inspections are scheduled through the online service or by phone at 408-730-7790; the general contractor is responsible for scheduling and being present for all inspections.
verified Aug 10, 2026 · source
Official building department
City of Sunnyvale One-Stop Permit CenterVerified Sunnyvale specifics are shown above. For project-specific fees, timelines, and counter staff, this department is the authority.
Permits by trade in Sunnyvale
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 Sunnyvale
Each job below is combined with Sunnyvale's verified permit data — portal, fee schedule, and adopted code edition.
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