City of Sunnyvale

A city address is usually permitted by the city, not the county — but not always, and some authorities keep building and hand electrical to someone else. Getting this wrong costs the whole submittal, because every requirement below belongs to whoever actually holds jurisdiction. Check the overlays in the same pass: an HOA, a historic district, a windstorm certification or a system-size cap can reshape the design, and all of them are cheaper to find now than after the array is laid out.

• Is this authority the AHJ for residential solar at this address? Yes 95% · city department page
• What does this authority permit itself, and what does it delegate? Both 90% · city department page
• Is a permit required for a residential rooftop PV system? Yes 97% · official permit bulletin
• Is there a separate electrical permit, or is it combined? Combined 80% · fee schedule
• Is a HOA or architectural approval required first? No — not required by the City. California's Solar Rights Act (Civil Code §714) preempts HOA disapproval of a code-compliant solar system, and HOA/architectural approval is not listed anywhere in the City's PV submittal checklist. 65% · official permit bulletin (absence) + state law
• Is there a historic-district review? No specific historic-district review found for residential PV; the City's OTC solar permit checklist and process do not reference historic or 'Heritage/Eichler' design review as a PV prerequisite. 55% · city department page (absence)
• Is a wind or windstorm certification required? No — not mentioned. Sunnyvale's PV bulletin sets out detailed structural and electrical requirements (weight limits, attachment spacing, disconnect/labeling rules) but includes no wind-load certification or windstorm-specific requirement for residential PV. 68% · official permit bulletin (absence)
• Is a Specific Use Permit or Council approval ever required? No — not stated as required for a standard residential rooftop PV system; the bulletin describes an administrative/over-the-counter Building Division process with no Planning Commission or City Council approval step. 55% · official permit bulletin (absence)
• Is there a system-size cap on residential generation? No system-size cap stated for residential rooftop PV — the fee schedule and PV bulletin both distinguish only 'Single Family Homes or Duplexes' vs. 'All Other Types of Buildings,' with no kW or panel-count ceiling given for the residential category. 62% · official permit bulletin + fee schedule (absence)

Several authorities require the electrical permit to be pulled by a licensed electrician, or require the contractor to be registered with them BEFORE applying. Registration is not same-day. This is second on the list rather than fourth because it is the step most likely to stop the job before the drawings matter.

• Who is allowed to pull the electrical permit? Either 55% · city department page / state law inference
• Must the contractor be registered with this authority before applying? Yes 90% · city department page
• Is a homeowner permitted to self-install and self-permit? Yes 55% · state law inference / absence check on city pages

Almost everywhere wants a site plan, a one-line or three-line electrical diagram, equipment cut sheets with listings, and a structural attachment detail. Build it against the published checklist rather than the last jurisdiction you worked in — the checklist is what the reviewer marks against.

• What documents make up a complete submittal? Per the Residential PV bulletin's 'Building Permit Application Requirements' checklist: (1) completed Building and Fire Application; (2) site plan showing building and PV panel locations; (3) equipment brochure(s) with installation requirements and UL listing; (4) attachment details for panel-to-roof (max 4 ft o.c.); (5) weight of panels to be installed; (6) single-line diagram. 92% · official permit bulletin
• How many copies, and in what format? Plans shall be digital, uploaded electronically via E-OneStop Online Services; no physical/paper copy count is specified for PV submittals. 85% · official permit bulletin
• Is a site plan required, and what must it show? Yes — a site plan showing the location of the building and the location of the photovoltaic panels. 90% · official permit bulletin
• Is a one-line / three-line diagram required? Yes 95% · official permit bulletin
• Are string and conductor calculations required? Not required as a separate calculation package — the bulletin cites only the code sizing rule (conductors sized at 125% of maximum PV current, 2022 CEC 690.8(B)(1)) rather than requiring applicant-submitted string/conductor calculations on the checklist. 65% · official permit bulletin
• Is a structural PE stamp required, and at what threshold? No PE stamp required if ALL of these non-engineered criteria are met (1&2-story SFR/duplex): modules+support ≤4 psf (PV) or ≤5 psf (solar thermal); top of panel within 12in of roof plane; max concentrated point load ≤64 lb; single roofing layer; roof structurally sound with no deterioration/sagging; no overhang past roof edges; array covers ≤50% of total roof area; panel plane parallel to roof; 2in–10in clearance under module. If any criterion is not met, a CA-licensed civil/structural engineer or architect must prepare the plans. 93% · official permit bulletin
• Is an electrical PE stamp required, and at what threshold? Not specified — the bulletin discusses an engineering-stamp threshold only for structural (civil/structural PE or architect); no electrical PE stamp requirement is stated anywhere in the residential PV bulletin. 62% · official permit bulletin

Most authorities now take the whole application through a portal, and several states cap or constrain what a residential solar permit may cost. Check whether plan check is billed separately before you quote the job.

• Which permit portal does this authority use? E-OneStop Online Services (city permit application/payment/inspection-scheduling portal) used together with SolarApp+ (hosted at gosolarapp.org) for automated PV plan review/pre-approval. 95% · city department page
• Can the whole application be completed online? Yes 92% · city department page
• What does a residential solar permit cost? $392.00 flat, for Photovoltaic/Solar Systems on Single Family Homes or Duplexes (plus a $39.50 permit-issuance fee and a 5% technology surcharge applied to all building permits). 'All Other Types of Buildings' = contact Building Division (not flat). 78% · fee schedule (PDF)
• How is the fee calculated? Flat (Single Family Homes/Duplexes); Valuation-based ('Building Permit Fee Table') for all other building types. 85% · fee schedule (PDF)
• Is there a separate plan-check fee? No — the flat $392 residential PV fee appears to be inclusive of over-the-counter plan review; the schedule's separate 'Plan Check = 70% of Building Permit Fee' line applies to valuation-based building permits, and the PV bulletin describes flush-mounted 1-2 family PV as eligible for 'Over-the-Counter Plan Check' rather than a separately-billed plan check. 58% · official permit bulletin + fee schedule

Interconnection is a separate process from the permit and usually the longer pole. Where the utility does not depend on the permit being issued, running both at once is the single biggest saving available on a residential job.

• What is the stated plan-review turnaround? Instant/same-day for SolarApp+-eligible systems (SolarApp+ gives automated pre-approval before the City permit is issued); no separate published business-day plan-review turnaround figure was found for non-SolarApp+-eligible residential PV (e.g., those failing the bulletin's non-engineered structural criteria). 65% · city department page
• How long is an issued permit valid before it expires? Not confirmed specifically for Sunnyvale; inferred to follow the base 2025 California Building Code §105.5 model provision (permit becomes invalid if no inspection is requested within 180 days, or expires if work is not completed within specified period) since no Sunnyvale-specific solar or building-permit page states a different validity period. 45% · inference from adopted model code
• Which utility handles interconnection here? PG&E (Pacific Gas and Electric Company). 82% · utility public statement + city utility page
• Where does the utility sit in the sequence? Parallel — PG&E's NEM/interconnection application (submitted directly to PG&E under Rule 21 / the Greenbook's Electric Generation Interconnection process) can proceed independently of the City's building-permit process; Permission to Operate (PTO) from PG&E requires proof the system passed final City inspection, so the two tracks converge only at PTO, not at permit issuance. 60% · utility interconnection manual (PG&E Greenbook)

The NEC edition a jurisdiction enforces is often a cycle behind the newest one published, and local amendments sit on top of it. Rapid shutdown, conductor sizing and labelling all change between editions, so the edition in force is the first thing to establish, not the last.

• Which NEC edition is in force? 2023 NEC, adopted as part of the 2025 California Electrical Code (2025 Title 24 cycle, effective statewide 1 Jan 2026). 85% · city department page (adopted codes list)
• Which building code edition is in force? 2025 California Building Code and 2025 California Residential Code. 92% · city department page (adopted codes list)
• Which fire code edition is in force? 2025 California Fire Code, as amended by Sunnyvale (SMC Chapter 16.52) — the eCode360 chapter shows 'Includes legislation through Ord. No. 3243-25 adopted July 29, 2025.' 92% · municipal code (fire, eCode360 via Wayback)
• Are there local amendments to any of the above? Yes — Sunnyvale Amendments to the California Fire Code (SMC 16.52) are the City's own local amendments (fire apparatus access, ESS location rules, standby power, etc.). The electrical code's only listed amendment link on the City's codes page is titled 'State specific amendments' (statewide DGS-level, not Sunnyvale-specific); that PDF itself 403'd on direct fetch and has no Wayback capture, so a Sunnyvale-specific electrical amendment beyond the state baseline could not be confirmed either way. 80% · municipal code (fire) + city codes page
• What is the installation judged against? The 2025 California Building/Residential/Electrical/Fire Codes as locally amended (SMC 16.52 for fire), plus the City's own Residential Photovoltaic (PV) Systems bulletin, which is the Building Division's working checklist for what an installation is judged against at plan check and inspection. 85% · official permit bulletin + adopted codes list

Ridge setbacks and roof access pathways are fire-service requirements and they constrain the array layout. They are the most common cause of a redesign after the fire department comments on a plan set.

• What ridge setback and access pathways are required? Per the bulletin (citing 2019/2022 CRC R324.6): at least two 36-inch-wide roof pathways from lowest edge to ridge on separate roof planes (one on the street/driveway side); ridge setback of 18in on both sides of the ridge if PV covers ≤33% of the roof (≤66% if the building is fire-sprinklered), otherwise 36in on both sides of the ridge. 88% · official permit bulletin

Which rapid-shutdown rule applies follows directly from the NEC edition in force, and the initiation device has to be at a location the fire service can reach and identify. This is inspected, and it is labelled.

• Is rapid shutdown required, and to which NEC edition? Yes — rapid shutdown is required per CEC 690.12. The bulletin cites '2022 CEC 690.12'; the currently-adopted cycle is the 2025 CEC (based on the 2023 NEC), which retains the same 690.12 section number for rapid shutdown. 85% · official permit bulletin

The NEC sets a baseline for permanent markings at the service equipment and the disconnecting means. On top of that, an authority may specify its own wording, and the utility may specify more again. Where any of them writes its own text, a generic off-the-shelf label set will not pass — this is the detail most often fixed on a return visit.

• Which placards does this authority require at the service equipment? A full set: PV disconnect marked 'PV SYSTEM DISCONNECT'; (for line/supply-side connections) an engraved placard noting the line/supply-side connection; rapid-shutdown labels; DC-conduit 'WARNING: PHOTOVOLTAIC POWER SOURCE' labels; DC/AC disconnect shock-hazard labels; a Directory Placard at the main service panel (CEC 705.10 & 690.56(B)); plus PG&E's own required signage on the meter panel noting an interconnected generation source (and a map/sign at the meter if the AC disconnect is remote). 90% · official permit bulletin + utility interconnection manual
• Does the authority specify placard wording of its own? Yes — exact wording is specified, e.g. 'WARNING: POWER SOURCE OUTPUT CONNECTION – DO NOT RELOCATE THIS OVERCURRENT DEVICE'; 'PV SYSTEM DISCONNECT'; 'WARNING: PHOTO VOLTAIC POWER SOURCE'; 'WARNING: ELECTRIC SHOCK HAZARD. DO NOT TOUCH TERMINALS...'. 93% · official permit bulletin
• Does it specify letter height, colour or material? Yes — minimum 3/8-inch high white letters on a red background; material must be suitable for the environment where the label is located. 93% · official permit bulletin
• Is a site plan / facility map placard required, and what must it show? Yes — a Directory Placard (permanent plaque or directory) is required at the main service panel denoting all electric power sources on the premises and/or rapid-shutdown equipment (CEC 705.10 & 690.56(B)); for stand-alone systems, a similar plaque must show the location of the stand-alone disconnect. PG&E separately requires a map/sign at the meter panel identifying the AC disconnect location when it's more than 10 ft away or out of line of sight of the meter. 87% · official permit bulletin + utility interconnection manual
• Does the UTILITY specify placards beyond the AHJ's? Yes. PG&E's Greenbook requires: permanent signage on the meter panel for any interconnected distributed generation (solar/wind/battery); an engraved placard noting a line/supply-side connection where a fusible AC disconnect is used ahead of the main breaker; and signage/a map at the meter panel when the AC disconnect is more than 10 ft away and out of line of sight of the meter. These are utility (PG&E) requirements layered on top of, and separate from, the AHJ's own labeling rules. 85% · utility interconnection manual (PG&E Greenbook)
• Where must the labels be placed? AHJ side: DC conduit/enclosures/raceways/junction boxes/disconnects labeled every 10 ft, within 1 ft of turns or bends, and within 1 ft above/below roof, ceiling or wall penetrations; Directory Placard at the main service panel. Utility (PG&E) side: signage on the meter panel itself, and (if the AC disconnect is >10 ft away or out of line of sight of the meter) an additional sign/map at the meter panel pointing to the disconnect's location. 88% · official permit bulletin + utility interconnection manual

Where the AC disconnect must sit relative to the meter is usually the utility's rule, not the building department's. Battery storage frequently carries its own permit, its own inspection and its own fire conditions.

• Where must the AC disconnect be, relative to the meter? Adjacent to the meter — not more than 10 feet away and within line of sight, per PG&E's general main-service-disconnect placement rule (which functions as the AC disconnect for most residential DG installations); Table 6-3 of the Greenbook separately sets out which meter-panel configurations require an AC disconnect at all. If the disconnect must be sited farther than 10 ft or out of line of sight, PG&E requires signage/a map at the meter panel pointing to it. 87% · utility interconnection manual (PG&E Greenbook)
• Must equipment be on a specific approved list? Yes — PV panels, modules and inverters must be listed by a Nationally Recognized Testing Laboratory (panels/modules per UL 1703 or UL 61730-1/-2; inverters per UL 1741, and for utility-interactive systems, listed for utility interaction); the City's general Inspections page separately requires all electrical equipment be NRTL-listed/labeled or field-certified by a recognized third-party testing agency. 90% · official permit bulletin + city department page
• Are batteries permitted, and under what conditions? Yes, conditionally. Sunnyvale's Fire Code amendments (SMC 16.52, amending CFC §1207.11.3 'Location') permit ESS only in: detached garages/accessory structures; an attached garage separated from dwelling living/sleeping space per CRC R302.6; outdoors or on an exterior wall not less than 3 ft from doors/windows and not below/above emergency escape/rescue openings; or enclosed utility closets, basements, storage or utility spaces within the dwelling meeting the code's protection requirements. 82% · municipal code (fire, eCode360 via Wayback)
• Is there a separate ESS permit or inspection? No separate ESS permit identified — the City's Residential PV bulletin covers 'Photovoltaic Panels and/or ESS Systems' under the same building/fire permit and lists a single combined final-inspection checklist for both. 68% · official permit bulletin
• Is there a local rule on service upgrades or busbar sizing? Yes, in effect: when PV inverters are connected on the load side of the main service disconnect (after the main breaker), the sum of the PV/generation breaker ratings must not exceed 20% of the main electrical panel's busbar rating (the bulletin cites 2022 CEC 705.12(B)(3)(1)); this is the code-standard load-side/'120% rule' family of provisions that the City enforces rather than an additional Sunnyvale-only amendment. 70% · official permit bulletin
• Is a specific mounting system or attachment spacing required? Yes — panels/racking shall be anchored to the roof framing at a maximum of 4 feet on center, both vertically and horizontally. 92% · official permit bulletin

Booking is a portal, a phone call or an email depending on the authority, and the notice required is rarely zero. Book before the work is finished rather than after — the lead time, not the work, is usually what sets the date.

• How is an inspection booked? Building inspections: primarily via the online E-OneStop portal ('Request for Inspection'), with phone as an alternative (408-730-7790). Fire inspections: booked by email to the Fire Prevention office (with permit number(s), address(es), inspection type(s), and site contact). 88% · city department page

Some authorities inspect their own solar work; some delegate it, and a few do not inspect the PV equipment itself at all. Who is coming determines what they will look at.

• Does this AHJ perform its own final solar inspection? Yes 90% · official permit bulletin + city department page
• If delegated, to whom? N/A — not delegated. Building/electrical inspection is performed by the City of Sunnyvale Building Division; fire-related inspection/review is performed by the City's own Department of Public Safety (Fire Prevention Engineering), which the department's own page describes as 'one of the few fully integrated police and fire departments in America.' Santa Clara County Fire Department does not have jurisdiction in Sunnyvale. 88% · city department page

A rough-in or mid-roof inspection, where one is required, has to happen before the work it covers is closed up. Missing a stage means opening something back up, and it is the most expensive kind of correction.

• Which inspections are required, and in what order? One final inspection is stated for PV/PV+ESS systems. For solar-tile reroofs, the checklist folds a roofing-underlayment check ('Underlayment of roofing before tiles are installed') into that same inspection sequence, alongside wire management, electrical panel verification (grounding, wire/breaker sizes), labeling, and smoke/CO alarm self-certification. 75% · official permit bulletin
• Is a rough-in or mid-roof inspection required? No — the bulletin states 'One final inspection is required' for both the Solar Tiles and Photovoltaic Panels/ESS checklists, with no separate rough-in or mid-roof inspection called out. 78% · official permit bulletin

The approved plan set, the permit, and the equipment listings should be on site and reachable. Inspectors routinely verify that installed equipment matches what was approved, and that the labels are the ones the plan set promised.

• Is there a published inspection checklist? Yes — the City's Residential Photovoltaic (PV) Systems bulletin itself contains a published, itemized 'Required Inspections' checklist (separate lists for Solar Tiles and for Photovoltaic Panels and/or ESS Systems). 95% · official permit bulletin
• What must be on site at inspection? The issued permit card (printed from E-OneStop after payment) and equipment cut sheets showing rapid-shutdown features (bulletin: 'Cut sheets for equipment shall be submitted calling out rapid shutdown features. See Marking/Labeling Requirements'); a completed Smoke and Carbon Monoxide Alarm self-certification form is also required at inspection. 72% · official permit bulletin + city department page
• Does the inspector verify labels and listings? Yes — the final-inspection checklist explicitly includes 'Labeling is installed' as its own line item, alongside verification that panels/racking, wiring, grounding and equipment installation are correct. 92% · official permit bulletin

Passing gives you a final or an equivalent sign-off. That is not the same as permission to operate: PTO comes from the utility, and who tells the utility the inspection passed varies. A system left switched off for weeks is usually waiting on this handover.

• What is issued on pass? A signed-off final building inspection / completed permit (no distinct 'Green Tag' or 'Certificate of Occupancy' terminology was found used for residential PV specifically — PV work under an existing dwelling does not trigger a new CO). 68% · official permit bulletin (inference)
• Who notifies the utility for PTO? Installer — the installer/customer submits interconnection completion paperwork (including confirmation of the passed final City inspection) directly to PG&E to request Permission to Operate; the AHJ does not notify PG&E on the customer's behalf. 60% · utility interconnection manual (PG&E Greenbook), inference
• Is there a re-inspection fee? $356.00 ('Miscellaneous Inspection - Re-Inspection'), assessed when work is not complete or corrections are not made, per Municipal Code §16.16.030. 80% · fee schedule (PDF)
• How are corrections issued and cleared? Corrections are noted at inspection and must be corrected before final; a Miscellaneous Inspection Re-Inspection fee ($356) may be assessed 'when such work is not complete or when corrections are not made,' per Municipal Code §16.16.030. A separate Plan Check Resubmittal fee ($245/hr, 2-hr minimum) applies if submittal documents are incomplete or changed, also under §16.16.030. 60% · fee schedule (PDF)