City of Tustin

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% · department page
• What does this authority permit itself, and what does it delegate? Both 90% · department page
• Is a permit required for a residential rooftop PV system? Yes 95% · department page
• Is there a separate electrical permit, or is it combined? Combined 78% · department page
• Is a HOA or architectural approval required first? No — not required by the City; a blanket HOA restriction on solar is separately pre-empted by California Civil Code §714 (Solar Rights Act) 58% · department page (absence)
• Is there a historic-district review? Yes, for parcels within the City's Cultural Resource District (CRD) or on its Historic Resource Survey — those are excluded from SolarAPP+ and routed to the CSS Portal for traditional review with Planning staff 88% · city list (PDF)
• Is a Specific Use Permit or Council approval ever required? Not for standard residential rooftop PV; the only special-review trigger identified is Planning-staff review (not City Council approval) for CRD/Historic Resource Survey parcels 60% · department page

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 60% · eligibility checklist
• Must the contractor be registered with this authority before applying? Yes 78% · eligibility checklist
• Is a homeowner permitted to self-install and self-permit? Yes, via the general owner-builder route; the streamlined SolarAPP+ path requires a licensed, city-business-licensed contractor 55% · department page

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? Either (a) a SolarAPP+ automated-review approval document plus a City CSS Portal permit application and fee payment, or (b) for CRD/historic or ineligible projects, plans + permit application submitted directly through the CSS Portal, incorporating the Tustin Standard Residential Photovoltaic Notes onto the plans 82% · department page
• How many copies, and in what format? Electronic submission only, via the CSS Portal (EnerGov); no paper-copy count specified for PV 60% · department page
• Is a site plan required, and what must it show? Yes; must show zoning designation and Assessor's Parcel Number (APN), and (per the current inspection document list) a layout site plan showing the installation 82% · standard notes handout
• Is a one-line / three-line diagram required? Yes 90% · department page
• Are string and conductor calculations required? Yes, implied by SolarAPP+ eligibility electrical thresholds (max 2 DC strings in parallel, max 9 current-carrying conductors per raceway, wire/terminal ratings) that must be shown to comply 60% · eligibility checklist

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? Citizen Self Service (CSS) Portal — Tyler Technologies EnerGov, at tustinca-energovpub.tylerhost.net — plus SolarAPP+ (gosolarapp.org/solarapp.nrel.gov) for automated review of eligible systems 95% · department page
• Can the whole application be completed online? Yes 90% · department page
• What does a residential solar permit cost? $535.00 flat (residential); $1,280.00 non-residential 95% · fee schedule
• How is the fee calculated? Flat 90% · fee schedule
• Is there a separate plan-check fee? No 78% · 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 for SolarAPP+-eligible systems (automated code-compliance check); otherwise approx. 10 business days for first submittal / 5 business days for resubmittal (general Building Division standard, not PV-specific) 68% · department page
• How long is an issued permit valid before it expires? 180 days (extended automatically while work is active and progressing) 95% · department page
• Which utility handles interconnection here? Southern California Edison (SCE) 92% · city page
• Where does the utility sit in the sequence? Parallel, with utility Permission-to-Operate withheld until after the city's inspection is passed 58% · utility interconnection page

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 the 2025 California Electrical Code, effective 1 Jan 2026 85% · adopting regulation
• Which building code edition is in force? 2025 California Building Code (based on the 2024 IBC), effective 1 Jan 2026 95% · adopting regulation
• Which fire code edition is in force? 2025 California Fire Code, effective 1 Jan 2026 (enforced by the Orange County Fire Authority under its JPA authority for the City of Tustin) 90% · adopting regulation
• Are there local amendments to any of the above? Yes — Ordinance No. 1569 (eff. 1/1/2026) adopts the 2025 code cycle with local amendments/supplemental regulations developed in partnership with OCFA, though the ordinance text contains no PV-specific amendment 85% · adopting ordinance
• What is the installation judged against? The current 2025 CBC/CEC/CFC cycle (effective 1/1/2026), plus the City's own Residential Photovoltaic Standard Notes handout for installation-detail requirements 75% · standard notes handout

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.

Nothing recorded for City of Tustin on this step yet — 1 question checked and found unpublished. The guidance above is general.

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 NEC 690.12, under the 2023 NEC as adopted via the 2025 CEC (effective 1/1/2026) 78% · adopting regulation

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 permanent plaque at the point of interconnection stating max AC output operating current and operating AC voltage (NEC 690.54); 'PHOTOVOLTAIC ARRAY AC DISCONNECTS' signage at all AC disconnects; a warning label at the inverter output/distribution equipment; a directory sign if disconnects are >6 ft from the overcurrent device; DC-conduit markings ('CAUTION: SOLAR CIRCUIT') every 10 ft, at turns, and at penetrations/junction boxes; a shock-hazard warning label where switch/breaker terminals stay energized when open 95% · standard notes handout
• Does the authority specify placard wording of its own? Yes 95% · standard notes handout
• Does it specify letter height, colour or material? Yes — red background, white lettering, minimum 3/8 inch letter height, all capital letters, Arial or similar font, non-bold, reflective weather-resistant material 95% · standard notes handout
• Is a site plan / facility map placard required, and what must it show? A facility-map/directory placard showing main service disconnect, PV AC disconnect, and DC disconnect locations is required only for commercial projects, per the Standard Notes; no equivalent residential facility-map placard is specified 90% · standard notes handout
• Where must the labels be placed? At the point of interconnection (POI plaque); at every AC disconnect; on the distribution equipment/inverter output connection; on all interior/exterior DC conduits, raceways, enclosures, cable assemblies and junction boxes (every 10 ft, at turns, and above/below penetrations); at the main service disconnect (on/inside the cover); and at the overcurrent-device location if disconnects sit more than 6 ft away 92% · standard notes handout

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.

• Must equipment be on a specific approved list? No city-specific approved-product list; general UL/NRTL listing is required (modules and inverters 'must be listed by UL' per the eligibility checklist). SCE separately maintains its own pre-approved inverter/power-control-system list at the utility level for Rule 21 interconnection. 65% · eligibility checklist
• Are batteries permitted, and under what conditions? Yes — the CSS Portal offers 'solar with battery' and 'solar with battery and panel upgrade' permit types; OCFA separately reviews/inspects battery/stationary-storage systems once chemical quantities trigger CFC Article 64 / 2007 IFC §608 thresholds 82% · department page
• Is there a separate ESS permit or inspection? Yes — OCFA's fee schedule carries separate line items for battery-system plan review (PR375, $963) and inspection (PR375i, $233), distinct from its PV-only items (PR362/PR362i) 85% · fee schedule
• Is there a local rule on service upgrades or busbar sizing? For SolarAPP+-eligible systems only: max 400A service, max 225A service/main disconnect, max 225A busbars, no aluminum wire, no existing PV on the same building, panel upgrades/derates must be pre-existing (not part of the same expedited application) 80% · eligibility checklist
• Is a specific mounting system or attachment spacing required? For SolarAPP+-eligible systems: modules must sit no more than ~6 inches above a pitched roof (PV Standard Notes says 4-6 inches), only one mounting-hardware type per project (flush/parallel to roof), Class A roofing only, PV+hardware weight ≤4 psf 82% · eligibility checklist

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? Portal (CSS Portal), with phone support available for confirming an AM/PM window 92% · department page
• How much notice is required? By 3:00 PM the prior business day for next-day inspection (effectively about 1 business day) 88% · department page
• Are same-day or AM/PM windows offered? AM/PM window can be requested but is not guaranteed; callers can get a firmer timeframe by phoning assigned inspectors between 7:30-8:00 AM the day of inspection 88% · department handout

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 92% · department page
• If delegated, to whom? Not delegated for building/electrical; Orange County Fire Authority is the delegate only for the fire-code-triggered portion (battery/ESS hazmat thresholds) 75% · JPA member-agency 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? Historically (under 2015 Ordinance 1456 guidance) a single final inspection for eligible small residential PV, with no pre-inspection/rough-in step; current SolarAPP+ page does not restate an inspection count but lists a single 'Schedule Inspection' step per permit 62% · handout (dated 2015)
• Is a rough-in or mid-roof inspection required? No — per the (dated) 2015 guidance, 'Pre-inspections or rough inspections will not be required' for eligible expedited-review PV systems 60% · handout (dated 2015)

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 SolarAPP+ PV Eligibility Checklist functions as a published pre-inspection compliance checklist; a 'Common Inspection Guidelines' document is also referenced by title in the 2015 handout 60% · eligibility checklist
• What must be on site at inspection? Job Card, Permit, layout site plan and single-line diagram, SolarAPP approval document, and equipment Spec Sheet 95% · department page
• Does the inspector verify labels and listings? Yes, inferred — the inspector is required to have the SolarAPP+ approval document and spec sheet on site, which exist to verify installed equipment matches the approved listing/design, and the PV Standard Notes mandate specific labels the field inspector must be able to see 68% · department page

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.

• Is there a re-inspection fee? $123.00 per hour, minimum 2 hours 82% · fee schedule