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.

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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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Subpanel installation permits in Mountain View, CA

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

What electrical contractors need to know about pulling a subpanel installation permit in Mountain View (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.

Mountain View accepts submittal through the ePermitsMV (Avolve) and has adopted the 2025 California Building Standards Code (Title 24, with Mountain View amendments). Fee details and sources are below.

Mountain View permit data

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

Permit portal

ePermitsMV (Avolve)

verified Aug 10, 2026 · source · "The permit process is handled exclusively on this platform" — city pages link ePermitsMV to the Avolve-hosted portal; account sign-in is required to apply

Adopted code edition

2025 California Building Standards Code (Title 24, with Mountain View amendments)

verified Aug 10, 2026 · source · Effective January 1, 2026, all Building and Fire permit applications must comply with the 2025 California Building Standards Code and certified standards, adopted by reference with local amendments

Fee schedule

Building Permit Fees — effective August 22, 2026 (valuation-based fee table)

verified Sep 13, 2026 · source · The city applies a 5% technology fee on the total permit cost of each building and fire permit issued

City of Mountain View Community Development — Building Division →All verified Mountain View 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 Mountain View-specific, see the statewide subpanel installation guide.

Typically needs a permit

Subpanel installation itself triggers a permit in nearly every California jurisdiction, Mountain View included. Mountain View-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 Mountain View-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 Mountain View notes

Building counter: City Hall, First Floor, 500 Castro Street, Mountain View, CA 94041; 650-903-6313; public counter hours Monday–Friday 8 AM–4 PM.
verified Aug 10, 2026 · source
All building permits must be signed by a California licensed contractor, except single-family home and duplex properties where the owner may elect to sign as an owner-builder.
verified Aug 10, 2026 · source
Building inspections are self-scheduled online 24/7; requests received by 3 PM on a business day are scheduled for the next business day.
verified Aug 10, 2026 · source
Same-Day Building Permits: like-for-like replacements and simple upgrades for single-family homes and duplexes can be submitted and issued online without a set of building plans.
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.

Other jobs in Mountain View

AC changeout Battery storage Duct replacement All Mountain View permits All California jobs

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