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.

How much does it cost?

It's pre-launch. Join the waitlist and you'll get founder pricing, your jurisdiction prioritized, and a direct line to the team. No spam, no credit card.

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.

Water heater replacement permits in Sunnyvale, CA

General California guidance last updated May 22, 2026 · Sunnyvale data verified August 10, 2026

What plumbing contractors need to know about pulling a water heater replacement permit in Sunnyvale (Santa Clara County).

Short answer

In California, replacing a water heater almost always requires a plumbing permit (and often a mechanical or electrical permit too) because the work involves gas or electrical connections, venting, seismic strapping, and a T&P/expansion device. It is governed by the California Plumbing Code (Title 24, Part 5) and the California Mechanical Code (Title 24, Part 4), and is generally pulled by a licensed C-36 contractor.

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 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

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

The general picture in California

A water heater changeout is treated as permitted plumbing work in nearly every California jurisdiction — even like-for-like. The reason it is rarely treated as maintenance: it modifies gas piping or electrical, requires combustion-air and venting verification, and California requires seismic strapping at two points, a temperature & pressure (T&P) relief discharge to an approved location, and a thermal-expansion device on closed systems. Tankless and heat-pump conversions add load calculations and circuit/venting work. Fees, submittal format, and inspection scheduling are set per city — confirm with the local building department.

For deeper background that isn't Sunnyvale-specific, see the statewide water heater replacement guide.

Typically needs a permit

Water heater replacement 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)

Relighting a pilot or replacing a thermocouple on the existing unit
Adjusting the thermostat or replacing the anode rod
Insulating exposed hot-water lines or the existing tank's blanket

Documents & plans generally required

Plumbing permit application (and electrical/mechanical permits for heat-pump or electric units)
Contractor license and city business registration
Manufacturer cut sheet for the new unit (BTU input, gallon capacity, energy factor)
Venting layout for gas units (B-vent vs. direct-vent; sidewall termination clearances)
Gas-line size and BTU load calc when upsizing or converting
Electrical load calc and circuit details for heat-pump or electric tank/tankless installs
Site detail showing T&P discharge route and termination

Common reasons water heater replacement applications get bounced

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

Missing or non-compliant seismic strapping (two straps — upper third and lower third)
T&P discharge terminating to an unapproved location (interior, into a fixture, or with reduced pipe size)
No expansion-tank detail on a closed system (backflow preventer or PRV present)
Vent termination clearances not shown for gas units, especially sidewall direct-vent
Gas line undersized for the new unit's BTU input — common on tankless upsizes
Combustion-air requirements not met for indoor gas installations

The inspection sequence

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

1Underground/rough not typically required for an in-place replacement
2Gas pressure test for new or modified gas piping
3Final inspection with the unit installed, strapped, vented, T&P routed, and tested

Licensing — who can pull it

Water heater work in California is generally performed by a C-36 (Plumbing) licensed contractor — or a C-20 (HVAC) when the unit is classified as a warm-air-furnace/water-heater combo, or a C-10 (Electrical) for the electrical-only portion of a heat-pump install. 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 to replace a like-for-like water heater in California?

Generally yes, even like-for-like. Almost every California city treats a water-heater changeout as permitted plumbing (and often mechanical) work because of the gas/electrical, venting, seismic strapping, T&P, and expansion-tank requirements. The fee and process are set by the city — confirm with the local building department.

Is a separate permit needed for a tankless or heat-pump conversion?

Usually yes — converting to a tankless gas heater typically requires gas-line upsizing (and may add electrical for the venting fan or controls); a heat-pump water heater adds an electrical permit (dedicated circuit, often a load calc) plus venting/condensate work. Conversions are not like-for-like changeouts.

What does California require for the T&P discharge?

The California Plumbing Code requires the temperature & pressure relief valve to discharge through a full-sized line to an approved location — typically outside at grade, never into a fixture or interior space. Inspectors check the termination and pipe sizing on every install.

Can a homeowner pull the permit?

California allows homeowners to perform certain work on their own primary residence under CSLB rules, but the permit and inspection requirements still apply. getPermit is built for licensed contractors — for owner-pulled permits, contact the city directly.

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