What does getPermit actually do?

getPermit reads your job details and tells you what a California city expects before you file: which permits the work triggers, the documents and plans you'll need, the fees to budget for, and the common reasons applications in that jurisdiction get bounced back. It produces a clear checklist you can act on. It does not submit to the city for you — you (or your permit person) stay in control of what gets filed.

Is there a human involved, or is it just AI?

Both. The AI does the research and drafts the assessment and checklist; an experienced permit coordinator reviews and approves it before it's treated as authoritative. The human check is the point — it's how we keep it trustworthy in a process where a wrong filing has real consequences.

Which cities do you cover?

We're starting deep in California rather than shallow everywhere. For a city we haven't fully mapped yet, we'll give you accurate general California guidance and point you to that city's official building department — and you can join the waitlist to be notified when we cover it in depth. We will not invent city-specific fees or timelines we haven't verified.

Solo electricians, plumbers, and HVAC contractors, and small general contractors who don't have a dedicated permit department and lose billable hours to permit admin.

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We're onboarding a first set of California contractors. Join the waitlist with your city and trade so we can prioritize the jurisdictions our early users actually work in.

Subpanel installation permits in Sunnyvale, CA

General California guidance last updated September 23, 2026 · Sunnyvale data fully re-verified August 10, 2026

What electrical contractors need to know about pulling a subpanel installation permit in Sunnyvale (Santa Clara County).

Short answer

In California, adding or replacing a subpanel requires an electrical permit — the feeder, overcurrent protection, grounding, and panel location are all plan-checked and inspected under the California Electrical Code (Title 24, Part 3). A C-10 (Electrical) licensed contractor generally pulls it.

Sunnyvale accepts submittal through the E-OneStop Online Services (Tyler EnerGov) and has adopted the 2025 California Building Standards Code (with Sunnyvale amendments). Fee details and sources are below.

Sunnyvale permit data

Sourced from public City of Sunnyvale documents — every field carries the source URL and verification date.

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

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 2026-27 Building Permit Fees — effective August 18, 2026

verified Sep 13, 2026 · source · Linked as "FY 2026/27 Building Permit Fees" on the Applications, Fees and Forms page

City of Sunnyvale One-Stop Permit Center →All verified Sunnyvale data →

The general picture in California

A subpanel is permitted electrical work in every California jurisdiction because it is new distribution equipment: a feeder sized to an overcurrent device, a grounding arrangement that must be right, and a location with code-required working clearance. The review centers on three things. First, the load calculation — a subpanel moves capacity around but doesn't add any, so the calc has to show the service behind it can carry the load (when it can't, the job grows into a service upgrade — a separate scope). Second, grounding: a four-wire feeder with neutral and ground kept separate at the subpanel, plus a grounding-electrode system when the panel serves a detached structure. Third, placement — clearances kept, and no panels in clothes closets or bathrooms. Fees, whether the city wants the trench open at rough, and scheduling are set per city — confirm with the local building department.

For deeper background that isn't Sunnyvale-specific, see the statewide subpanel installation guide.

Typically needs a permit

Subpanel installation itself triggers a permit in nearly every California jurisdiction, Sunnyvale included. Sunnyvale-specific variations are confirmed with the issuing department above.

Usually doesn't (general norm)

Resetting breakers and updating the panel directory
Replacing a breaker like-for-like — treated differently city to city, verify locally
Cover-plate and labeling maintenance

Documents & plans generally required

Electrical permit application
Contractor license and city business registration
Load calculation supporting the feeder and the service behind it
Single-line/panel schedule — feeder size, overcurrent protection, and the circuits landing in the new panel
Grounding detail — four-wire feeder with neutral and ground separated at the subpanel
Panel location and working-clearance detail
For detached structures: feeder routing (often trenched) and the grounding-electrode system at the building

Common reasons subpanel installation applications get bounced

Code-rooted patterns across California — not a Sunnyvale-specific rejection rate.

Neutral and ground bonded together at the subpanel — the bond belongs only at the service disconnect
Feeder conductor size not matched to the overcurrent device, or no load calc supporting it
Working clearance not maintained — roughly 30" wide, 36" deep, and 6'6" of headroom kept permanently clear
Panel located where panels aren't allowed — clothes closets, bathrooms
A legacy three-wire feeder proposed where a four-wire feeder with an equipment ground is required
Detached-structure subpanel without its own grounding-electrode connection

The inspection sequence

A typical order — the number of stops and exact sequence vary by jurisdiction and scope.

1Rough inspection where the feeder is concealed in framing or a trench before cover
2Final inspection with the panel set, breakers landed, the directory filled out, and clearances verified

Licensing — who can pull it

Subpanel installation in California is C-10 (Electrical) licensed work; a B (General Building) contractor may pull within a larger project under CSLB rules. The contractor doing the work typically pulls the permit.

Other verified Sunnyvale 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

Frequently asked questions

Do I need a permit for a subpanel in a garage or shop?

Yes — a subpanel is new distribution equipment fed by a feeder, and it's permitted electrical work everywhere in California. A detached garage or shop adds scope: the feeder route (often trenched) and a grounding-electrode system at the detached building.

Why can't neutral and ground be bonded in a subpanel?

The neutral-to-ground bond exists at the service disconnect only. Downstream, neutrals and grounds run on separate bars so fault current returns on the equipment-grounding conductor — a bonded subpanel puts normal neutral current on the grounding path. It's the most common subpanel correction, especially on panels reused from service duty.

Does adding a subpanel mean upgrading the main service?

Not automatically — the load calculation decides. A subpanel redistributes capacity; it doesn't create it. If the calc shows the existing service can't carry the added load, the project becomes a service upgrade, which is its own permit scope.

Can the subpanel go in a closet?

Not in a clothes closet or a bathroom, and wherever it goes the working clearance has to stay permanently clear. Garages, utility rooms, and hallways with clearance are the usual locations. Placement is checked at plan review and again at final.

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