City of Claremont

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% · municipal code
• 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% · published checklist
• Is a HOA or architectural approval required first? No 90% · municipal code
• Is there a historic-district review? Yes, if the property is individually listed on the Claremont Register of Sites of Historic or Architectural Merit, is a contributing resource in a designated Historic District, or sits in the HC Historical Claremont District — a Certificate of Appropriateness (staff-level 'minor' or Commission-level 'major' review) is required for exterior 'Alteration,' and rooftop solar is not on the chapter's list of actions exempt from that requirement. 65% · municipal code
• Is a Specific Use Permit or Council approval ever required? Not required for standard as-of-right residential rooftop PV (CMC §16.145.010: permitted use in all zones as a matter of right); Council/Commission-level approval could only arise indirectly via a Major Certificate of Appropriateness review for a property on the Claremont Register or in a Historic District (see Q25) — no separate citywide Special Use Permit for solar itself was found. 55% · municipal code
• Is there a system-size cap on residential generation? Codified cap of 10 kW AC nameplate / 30 kW thermal gates eligibility for the local expedited/streamlined review process (CMC §15.50.010.B.1, Ord. 15-07, an AB 2188-era threshold); this is NOT an absolute ceiling on residential system size — larger systems are simply routed through standard (non-expedited) plan check rather than being barred. The City's current live Residential Solar Permit page (SolarApp+) states no updated size cap of its own, so there is a live-page-vs-codified-ordinance gap of exactly the kind flagged in this brief: the codified expedited-review threshold is unchanged since 2015 while the live SolarApp+ program page is silent on any cap. 75% · municipal code

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 80% · department form
• Must the contractor be registered with this authority before applying? No 65% · department page
• Is a homeowner permitted to self-install and self-permit? Yes 75% · department form

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? Cover sheet (address/APN/date/owner/sheet index/revision log/scope of work/code references/fire-sprinkler status/designer & team contacts/deferred submittals/LACoFD stamp note for ESS); site plan (location, north arrow, setbacks, equipment locations, vehicular path/gates/fences, LACoFD stamp note for ESS); panel layout showing fire pathway & ridge setbacks; roof-framing & panel-mounting details (rafter/truss size/spacing/span/grade, staggered attachment points, roof-covering type — double-layer asphalt shingle not allowed); electrical plan (single-line diagram, load calcs where breakers are derated, conductor/pipe sizing, LACoFD stamp note for ESS); and a label schedule (equipment labels, termination labels, site placard). 95% · published checklist
• How many copies, and in what format? Digital PDF only — uploaded through the City's online Building Permit Application (OpenForms embed) or emailed to buildingapplications@claremontca.gov; no physical copy count is specified anywhere in the Building Division's materials. 65% · department page
• Is a site plan required, and what must it show? Yes for new structures/additions — must show general location and adjacent streets, north arrow, setbacks from property lines and other structures, equipment locations (including vehicular path/protection and gates/fences where applicable), and requires an LACoFD stamp if an ESS is included. 90% · published checklist
• Is a one-line / three-line diagram required? Yes 92% · published checklist
• Are string and conductor calculations required? Yes 85% · published checklist
• Is a structural PE stamp required, and at what threshold? Structural calculations (and by extension an engineer/architect stamp) are NOT required where less than 25% of any one roof surface is covered with panels; above that threshold, structural calcs are required, and per the general residential checklist a PE/architect stamp is required 'unless design is 100% compliant with prescriptive measures of the California Residential Code.' 85% · published 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? SolarApp+ (solarapp.nrel.gov) for the voluntary expedited PV plan-check/permit path; a general OpenForms-embedded online Building Permit Application (us.openforms.com) for standard/non-SolarApp+ submittals; and a separate legacy ASP permit-status lookup at www3.ci.claremont.ca.us/bldg_permits/. 85% · portal landing page
• Can the whole application be completed online? Yes 75% · department page
• What does a residential solar permit cost? No dedicated solar line item exists in the current fee schedule; the cost is the standard Building Permit fee (issuance $57.87 + valuation-based plan-check at 80% of the building permit fee where valuation exceeds $1,000) plus Electrical Permit unit fees for any new panels/subpanels/circuits (e.g., a new 200A service/subpanel is $88.52). No fixed dollar total for a 'typical' residential PV system is published. 60% · fee schedule
• How is the fee calculated? Valuation 60% · fee schedule
• Is there a separate plan-check fee? Yes 85% · 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? 3 business days 92% · municipal code
• How long is an issued permit valid before it expires? 180 days (inferred) 45% · municipal code
• Which utility handles interconnection here? Southern California Edison (SCE) 95% · city source
• Where does the utility sit in the sequence? After permit 55% · AHJ checklist

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 92% · municipal code
• Which building code edition is in force? 2025 California Building Code (Volumes 1 & 2, incorporating the 2024 IBC) and 2025 California Residential Code 92% · municipal code
• Which fire code edition is in force? 2026 Fire Code for the Consolidated Fire Protection District of Los Angeles County (Title 32, LA County Code), which amends the 2025 California Fire Code and incorporates the 2024 International Fire Code — per CMC §15.20.010, adopted the same day (Ord. 2025-07, 11/25/2025) as the building/electrical chapters. NOTE — a real code-cycle lag exists one level down: LACoFD's own current operative PV/ESS guidance documents (Expedited-Permitting Checklist and ESS/PV/Disconnects Guide, both dated 2023-09-01) still describe compliance against the '2023 edition of the Los Angeles County Fire Code, a locally amended version of the 2022 California Fire Code' and cite '2022 CEC §705.10/§705.20' for disconnect/placarding requirements — i.e., LACoFD's field guidance has not been reissued to track the CBC/CEC/CFC cycle Claremont adopted in Nov. 2025. 85% · municipal code
• Are there local amendments to any of the above? Yes 92% · municipal code
• What is the installation judged against? The 2025 CBC/CRC/CEC/CMC/CPC/California Energy Code and California Green Building Standards Code, the 2025 WUI Code, and the 2026 LACFC, all as locally amended by CMC Title 15 (Ord. 2025-07, eff. 11/25/2025) — plus, for the LACoFD-retained fire scope specifically, LACoFD's Expedited PV/ESS Guide and Checklist. 88% · municipal code

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? Panel layout plans must show fire pathway and ridge setbacks, per the City's own submittal checklist, but Claremont does not publish its own numeric pathway/setback table separately from the adopted code; the applicable dimensional standard is therefore the current 2026 LACFC / 2025 CRC default fire-pathway and ridge-setback tables (not locally re-amended). 55% · published checklist

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; the currently adopted edition is NEC 2023 (via the 2025 CEC, CMC §15.08.010). NOTE: LACoFD's own current PV/ESS Guide, in describing the disconnect/RSD placarding requirement, still footnotes '2022 CEC §705.10, §705.20' — a direct instance of the same cross-document code-cycle lag flagged at Q31. 80% · AHJ checklist

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? Two layers: (1) City Building Division — general equipment labels showing purpose/rating/feeder for every piece of equipment (e.g., 'Interconnect relay, 200A, Fed from Main Service Panel, Battery Storage, and PV Array'), termination labels where conductors terminate on unlabeled terminals, and a site placard identifying each array where multiple/existing arrays exist. (2) LACoFD (retained scope) — Exterior 'F.D. – ELECTRICAL / BLDG DISCONNECT / #X of Y' placards at every disconnect/enclosure that must be operated, plus smaller Panel-Interior placards identifying specific switches/breakers within a panel. 92% · AHJ guide
• Does the authority specify placard wording of its own? Yes 95% · AHJ guide
• Does it specify letter height, colour or material? Yes — Exterior placards: minimum 2in tall x 3.5in wide, weather-resistant plastic, verbiage engraved; Panel-Interior placards: minimum 7/16in tall x 3/4in wide, same material. Color: red letters engraved into a yellow background. Character: solid all-capitals Arial, minimum font size 24 (28 bold for 'F.D.' and '#X of Y' on exterior placards; 24 bold on panel-interior placards). Attachment: permanent epoxy, material/weather/surface-compatible. 95% · AHJ guide
• Is a site plan / facility map placard required, and what must it show? Yes — a site placard identifying each array is required whenever an existing array or multiple arrays are proposed (City requirement); separately, where LACoFD plan submittal is triggered, an Electrical Power Source Disconnect Schedule table (listing each energy source, its #X of Y disconnect number, and the disconnection device/equipment) must be included on the plans. 85% · published checklist
• Where must the labels be placed? Per LACoFD's retained scope: Exterior placards go on or immediately adjacent to each panel/enclosure/standalone disconnect switch that must be operated (placement determined by a C-10 electrician, subject to fire-code-official approval); Panel-Interior placards go inside the panel next to the specific switches/breakers they identify. 90% · AHJ guide

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? Within 6 feet of the main service panel, on the exterior, on the same wall plane, not separated by walls/gates/fences/vegetation/architectural features — per the fire-code-retained requirement enforced by LACoFD (2023 LACFC §509.3). 60% · AHJ checklist
• Must equipment be on a specific approved list? Yes, in the ESS-specific sense — ESS units must carry UL 9540 listing (or listed components) and inverters must carry UL 1741 listing (or an equivalent UL 9540 listing), per LACoFD's checklist; PV modules/equipment generally must be listed/labeled equipment per the adopted CEC. No separate Claremont-specific 'approved products list' beyond code-required listing was found. 70% · AHJ checklist
• Are batteries permitted, and under what conditions? Yes, subject to LACoFD conditions: max 20 kWh per individual ESS unit; max 80 kWh aggregate per site AND per location category (attached garage / detached garage / outdoors on wall / outdoors on ground); 3ft spacing between units; 3ft/5ft/10ft separation from openings/lot-lines-public-ways-combustibles/vegetation respectively for outdoor-mounted units; impact protection (bollards) where subject to vehicular impact; heat/smoke detection and notification required for garage-installed ESS. City Building Division requires a separate permit and a C-10 licensed contractor for ESS installations, and LACoFD plan approval/stamp is required on plans. 90% · AHJ checklist
• Is there a separate ESS permit or inspection? Yes 92% · published checklist
• Is a ground mount treated as a structure? Likely yes, by inference — not stated PV-specifically 60% · municipal code
• Is a specific mounting system or attachment spacing required? Yes — roof framing/panel-mounting plans must show all framing details (rafter/truss size, spacing, span, grade), point-of-attachment must be staggered to avoid point loads, and installation is not permitted over double-layer asphalt shingle roofing. 90% · published 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 80% · department page
• How much notice is required? 2 business days 88% · municipal code
• Are same-day or AM/PM windows offered? Yes — AM window 8:00am–1:00pm, PM window 12:00pm–5:00pm, with an approximately 3-hour estimated window published on a daily inspection-route sheet after 6pm the evening before (confirmed via a live sample 'Daily Inspection Time Frames' sheet showing 8-11, 10-1, 12-3, and 2-4 slots). 90% · 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? Delegated 75% · municipal code
• If delegated, to whom? Los Angeles County Fire Department (LACoFD), Fire Prevention Division — for ESS>3kWh, disconnect/rapid-shutdown placarding, and the narrow BIPV subset only; general building/electrical final inspection is NOT delegated and is performed by the City of Claremont Building Division. 85% · AHJ checklist

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? Where an ESS is included, LACoFD fire inspection/approval must be completed FIRST, before the City Building Division's inspection ('Fire inspection must be completed prior to Building inspection if ESS system is included in installation'); for eligible small residential rooftop solar without a qualifying ESS/BIPV/disconnect trigger, only a single consolidated Building Division inspection is required. 85% · department page
• Is a rough-in or mid-roof inspection required? No, not for small residential rooftop solar systems eligible for the expedited path — CMC §15.50.060.E provides for only ONE Building Division inspection (no separate rough-in/mid-roof inspection). Larger or non-expedited-eligible jobs (e.g., with a main-panel-upgrade or an ESS) may still require the AHJ's standard multi-stage inspections, but this was not separately documented for solar specifically. 65% · municipal code

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 — LACoFD publishes a full, dated (2023-09-01) 5-page inspection checklist for the fire-retained scope. The City's own Residential Solar Permit page references a City-provided QA/QC 'inspection checklist' that the contractor must initial before the City inspection, but that specific standalone city-issued checklist document (as distinct from the SolarApp+-generated packet) could not be independently located/downloaded on the public website. 70% · AHJ checklist
• What must be on site at inspection? City-issued job card (kept on site, or picked up by the applicant/an authorized courier with a notarized authorization letter and ID); the contractor-initialed QA/QC inspection checklist. Where LACoFD scope is triggered: digital proof of the construction permit obtained via the expedited process (e.g., SolarApp+ approval), the required disconnect placarding already in place, and LACoFD fees paid in advance. 85% · department page
• Does the inspector verify labels and listings? Yes 85% · AHJ checklist

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 60% · AHJ checklist
• Who notifies the utility for PTO? Installer 45% · department page (inference)
• Is there a re-inspection fee? $117.07 (City Building Division reinspection fee); LACoFD charges $98 for 'additional inspections after initial inspection and one reinspection' for the fire-retained scope. 80% · fee schedule
• How are corrections issued and cleared? Plan-check stage: a written plan-check correction notice detailing all deficiencies is issued to the applicant for resubmission (CMC §15.50.060.D). Inspection stage: if a small residential rooftop solar system fails inspection, a subsequent (re-)inspection is authorized, though it need not conform to the two-business-day/two-hour-window standard applied to the original expedited inspection (CMC §15.50.060.G). 85% · municipal code