City of Downey

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 — City of Downey Community Development Dept, Building & Safety Division is the AHJ for building/electrical; Downey Fire Department (own municipal dept) for fire. 95% · department page
• What does this authority permit itself, and what does it delegate? Both — the city issues both building and electrical permits itself through the Building & Safety Division; fire plan review/inspection is handled by Downey's own Fire Department, not delegated to LA County. 90% · department page
• Is a permit required for a residential rooftop PV system? Yes 95% · fee schedule
• Is there a separate electrical permit, or is it combined? Combined into a single 'Photovoltaic Systems Permit' — the fee schedule lists one PV permit (with an 'Electrical Solar Issuance' component) plus one PV plan-check fee, issued separately from the base building permit for the house (the R-3 correction list explicitly says PV requires a separate permit from the main building permit). 75% · fee schedule / checklist
• Is a wind or windstorm certification required? No — no windstorm/wind-load certification program (TDI-style) applies in this California jurisdiction; wind loading is addressed through CBC/ASCE 7 structural design, not a separate certification. 55% · inference from comparable CA practice
• Is a Specific Use Permit or Council approval ever required? No CUP/Council approval required for a standard residential rooftop PV installation — Downey Municipal Code §9504 (Air Conditioning, Mechanical Roof, and Utility Equipment) explicitly exempts 'small wind energy systems, solar water heaters, solar power, or other passive solar energy systems' from the R-1/R-2 roof-mounted-equipment restrictions that would otherwise require screening/review. 65% · municipal code (zoning)

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 — a CA-licensed contractor (typically C-46 Solar or C-10 Electrical), or the homeowner as an owner-builder after completing the owner-builder verification form. 75% · department page
• Is a homeowner permitted to self-install and self-permit? Yes 90% · 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? Permit application (with Preliminary Planning review); 4 sets of plans on 24x36" sheets; soils report (2 copies, if required); structural calculations (2 copies, wet-stamped and signed, if required); Title 24 energy analysis (2 sets of 8.5x11" with CF-1R/MF-1R forms); complete solar PV plans or documentation of an applicable code exception; site plan, floor plan, and structural plans per the Minimum Submittal Requirements checklist. 90% · published checklist
• How many copies, and in what format? 4 complete sets of plans printed on 24"x36" sheets; 2 copies of structural calculations (wet-stamped/signed); 2 sets of 8.5"x11" Title 24 energy calculations; 2 copies of soils report if required. 90% · published checklist
• Is a site plan required, and what must it show? Yes. Must show: existing site conditions (trees, fences, utility poles), all property lines with dimensions, setbacks from property lines/easements, adjacent street or alley, vicinity map and north arrow, building/structure location(s) and orientation, driveways/paved areas/walkways/landscaping, location and height of retaining walls and fences, plus an NPDES stormwater-discharge note. 90% · published checklist
• Is a one-line / three-line diagram required? Yes (inferred) — the R-3 Standard Plan Check Correction List requires 'complete solar photovoltaic plans,' and the city's general electrical submittal rule requires 'a single-line diagram' whenever a service/system triggers full electrical plan review; SCE's Rule 21 also requires a submitted single-line diagram for the interconnection application. 65% · checklist / utility tariff
• Are string and conductor calculations required? Likely yes, as part of 'complete solar photovoltaic plans' required by the R-3 correction list, but no Downey document explicitly names string/conductor sizing calculations for PV. 55% · 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? Accela Citizen Access (ACA) — https://aca-prod.accela.com/downey (also reached via https://permits.downeyca.org/CitizenAccess/Default.aspx) 95% · portal landing page
• Can the whole application be completed online? Yes (inferred) — the city has made online scheduling mandatory ('EFFECTIVE MAY 1st, 2025 All inspections must be scheduled through the online Accela Citizen Access Portal') and the same Accela instance is the destination for the permit-application link, consistent with full online application/ePlan capability. 70% · portal landing page
• What does a residential solar permit cost? ≈$539.69 total for a residential system 15kW or under: $331.66 (Photovoltaic Systems Permit, residential ≤15kW) + $54.04 (Electrical Solar Issuance) + $153.99 (Photovoltaic Systems Plan Check, residential ≤15kW). Above 15kW, add $11.85/kW (permit) and $5.92/kW (plan check) for each kW over 15. 92% · fee schedule
• How is the fee calculated? Tiered / Per kW 95% · fee schedule
• Is there a separate plan-check fee? Yes — $153.99 for residential systems 15kW and under (plus per-kW increment above that). 95% · 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.

• How long is an issued permit valid before it expires? Plan-check application deemed abandoned 180 days after filing if not pursued/permitted (one 180-day extension available). Once issued, a permit becomes invalid unless work commences within 12 months of issuance, or if commenced work is abandoned for 180 days (one 180-day extension available, in writing, with cause). 95% · department page / ordinance citation
• Which utility handles interconnection here? Southern California Edison (SCE) 88% · city page (utility confirmation)
• Where does the utility sit in the sequence? After permit — SCE will not issue Permission to Operate for a NEM-1/NEM-2 facility ≤1MW until it has received 'evidence of Applicant's final electric inspection clearance from the Governmental Authority having jurisdiction over the Generating Facility.' 90% · utility tariff (Rule 21)

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? 2020 NEC, as adopted via the 2022 California Electrical Code (Title 24 Part 3) — per the city's own current Building & Safety Division page. NOTE: California's 2025 code cycle (based on the 2023 NEC) took effect statewide 1 Jan 2026; the city's page was captured twice in 2026 (9 Mar and 18 May) and both times still listed the 2022-cycle codes, so this may reflect a webpage that has not yet been updated rather than the code actually in force — treat with caution and verify with the Building & Safety Division directly. 60% · department page (dated by Wayback capture, not a code-adoption ordinance)
• Which building code edition is in force? 2022 California Building Code (per city's current page; see caveat on q29 re: possible lag behind the 2025 statewide cycle). 65% · department page
• Which fire code edition is in force? 2022 California Fire Code (per city's current page; see caveat on q29 re: possible lag behind the 2025 statewide cycle). 65% · department page
• Are there local amendments to any of the above? Yes 85% · department page
• What is the installation judged against? The 2022 California Building/Residential/Electrical/Fire Codes (Title 24) as locally amended per Downey Municipal Code Article VIII — subject to the q29/q30/q31 dating caveat. 65% · department page

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 Downey 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 under NEC 690.12 as incorporated by the California Electrical Code edition currently referenced on the city's page (2020 NEC, per 2022 CEC) — subject to the same q29 dating caveat regarding a possible undocumented shift to the 2023 NEC as of 1 Jan 2026. 60% · inference from adopted code edition

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.

• Does the UTILITY specify placards beyond the AHJ's? Yes — SCE's Rule 21 tariff requires the required visible/manual disconnect switch to carry markings clearly indicating open and closed positions, and if that switch is not located adjacent to the Point of Common Coupling, requires additional permanent signage identifying its location (or, if inside a locked premises, signage with contact information). 75% · utility tariff (Rule 21)
• Where must the labels be placed? SCE Rule 21 requires the visible-disconnect signage to be at or adjacent to the Point of Common Coupling, or (if the disconnect is elsewhere) accompanied by permanent signage at an approved location describing where it is. This only covers the utility-required disconnect marking — no Downey-specific document was found specifying placement for other required labels (main panel, rapid-shutdown, etc.). 55% · utility tariff (Rule 21)

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? Yes — 'All electrical equipment shall be listed' is a standing requirement in the city's electrical-submittal guidance. 80% · handout

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 (Accela Citizen Access) — phone is available only to cancel/reschedule an existing inspection, not to book one. 90% · department page
• How much notice is required? Effectively 1 business day — inspections requested by 3:00 p.m. are scheduled for the next business day; requests after 3:00 p.m. move to the second business day. 85% · 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 — the city performs its own final electrical/PV inspection (Building & Safety Division); Downey Fire Department (own municipal department, not LACoFD) separately performs any required fire final. 85% · department page
• If delegated, to whom? N/A — not delegated. Both the Building & Safety Division (electrical/PV) and Downey Fire Department (fire-related items) are in-house city departments; no LA County Fire or LA County Building & Safety involvement was found. 85% · 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? Not fully published for PV specifically. General pattern from city handouts: rough inspections (framing/plumbing/electrical/mechanical) as applicable, then a final inspection once installation is complete; a Downey Fire Department final is also required if the project triggers fire-sprinkler or related fire-code work. The city references an 'Inspection Job Card' that lists specific inspection types/sequence, but that card itself could not be retrieved (not linked as a document on the pages found). 55% · department page (partial)

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.

Nothing recorded for City of Downey on this step yet — 3 questions checked and found unpublished. The guidance above is general.

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? Final (permit finaled/closed) — no separate Certificate of Occupancy is issued for an existing single-family residence gaining PV; a CofO applies mainly to new construction/occupancy changes per the city's own 'Certificate of Occupancy Requirements and Process' handout. 60% · department page (inference)
• Who notifies the utility for PTO? Installer/Applicant — the entity that submitted the SCE Net Energy Metering Interconnection Request is responsible for supplying SCE with 'evidence of Applicant's final electric inspection clearance' to trigger Permission to Operate. 80% · utility tariff (Rule 21)
• Is there a re-inspection fee? $209.70 (half-hour minimum) 95% · fee schedule