City of Montclair

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% · municipal code
• What does this authority permit itself, and what does it delegate? Both 95% · department page
• Is a permit required for a residential rooftop PV system? Yes 95% · published checklist
• Is there a separate electrical permit, or is it combined? Combined 60% · published checklist
• Is a HOA or architectural approval required first? No 80% · municipal code
• Is there a historic-district review? Only for individually designated historic landmarks, not a blanket historic-district review. 80% · municipal code
• Is a wind or windstorm certification required? No 65% · published checklist
• Is a Specific Use Permit or Council approval ever required? No CUP/Council-approval escalation route is codified for residential rooftop solar. 70% · municipal code
• Is there a system-size cap on residential generation? No hard size cap; 10 kW AC (or 30 kW thermal) is the threshold for the City's expedited/ministerial review path, not a maximum allowed system size. 85% · 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 handout
• Must the contractor be registered with this authority before applying? No 60% · department handout
• Is a homeowner permitted to self-install and self-permit? Yes 85% · published 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? Completed permit application; Solar Eligibility Checklist (for expedited review); a completed Solar PV Standard Plan (central/string OR micro-inverter version) as the electrical plan set; a roof plan showing panel layout, roof access point, fire-code access pathways, PV fire classification and label locations; and Structural Criteria documentation (or full PE-stamped structural calcs if not eligible for the expedited checklist). 90% · published checklist
• How many copies, and in what format? Submission accepted electronically (email to solar@cityofmontclair.org) or in person at 5111 Benito St.; number of copies is not stated in the published bulletin. 60% · published checklist
• Is a site plan required, and what must it show? Yes -- a roof plan is required showing roof layout, PV panel/module placement, the approximate roof-access point, code-compliant access pathways, PV system fire classification, and the locations of all required labels/markings; the Eligibility Checklist separately requires a diagram of panels, pathways and disconnect/roof-access locations. 90% · published checklist
• Is a one-line / three-line diagram required? Yes 90% · published checklist
• Are string and conductor calculations required? Yes 85% · published checklist
• Is a structural PE stamp required, and at what threshold? Required only for systems that do NOT qualify under the City's expedited Structural Criteria self-certification (flush-mounted arrays on wood-framed 1-2 family dwellings meeting stated zero-snow-load / wind-exposure assumptions); non-qualifying systems (e.g., most ground mounts, non-flush racking, or sites outside those assumptions) require structural drawings and calculations stamped and signed by a California-licensed civil or structural engineer. 70% · 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? Symbium (embedded as the City's 'Solar Permits Portal' at cityofmontclair.org/solar-permits, jurisdiction=montclair). 90% · portal landing page
• Can the whole application be completed online? Yes (inferred) 55% · portal landing page
• What does a residential solar permit cost? Approximately $675 for a residential system 15kW or less ($450 building-permit PV fee + $225 electrical-permit PV fee), plus $15/kW for any capacity above 15kW on the building side, per the City's 2022 Master User Fee Schedule. 70% · fee schedule
• How is the fee calculated? Tiered / Per kW 70% · fee schedule
• Is there a separate plan-check fee? Yes 60% · 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? Stated as 1 to 3 business days for the streamlined solar review. 55% · published checklist
• How long is an issued permit valid before it expires? 180 days to commence work from permit issuance (or from suspension/abandonment of started work); one extension of up to 180 additional days may be granted for good cause; permits are not extended more than once. 90% · municipal code
• Which utility handles interconnection here? Southern California Edison (SCE) 95% · general plan

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 95% · municipal code
• Which building code edition is in force? 2025 California Building Code, based on the 2024 International Building Code. 95% · municipal code
• Which fire code edition is in force? 2025 California Fire Code, based on the 2024 International Fire Code. 95% · municipal code
• Are there local amendments to any of the above? Yes 95% · municipal code
• What is the installation judged against? The 2025 California Building/Residential/Electrical/Fire/Green Building Standards Codes as locally amended (MMC Title 10), plus the City's own Solar Standard Plan and Structural Criteria self-certification checklists for systems seeking the expedited path. 90% · 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? Clear roof access pathways are required (Eligibility Checklist Fire Safety Requirement A); the City's local Fire Code amendment (MMC 10.28.044) carves out an exception from CFC Section 1205.2 access-pathway requirements for listed Building-Integrated Photovoltaic (BIPV) systems meeting a national test standard addressing CEC 690.12(B)(2); no separate numeric ridge-setback distance is stated in the amendment itself (the base, unamended CFC Chapter 12 Section 1205.2 pathway/setback dimensions otherwise apply). 70% · municipal code

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? Required under NEC/CEC Section 690.12, via the 2023 NEC as adopted within the 2025 California Electrical Code (MMC 10.20.010). 65% · municipal code

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? PV System AC Disconnect sign; PV System DC Disconnect sign; a 'Dual Power Sources / Second Source is Photovoltaic System' placard at the main service panel; 'Warning: Photovoltaic Power Source' markings on junction/combiner boxes and on conduit runs (every 10 feet); and (where applicable) an inverter-output/overcurrent-device 'Do Not Relocate' warning and an ungrounded-conductor shock-hazard warning. 85% · published checklist
• Does the authority specify placard wording of its own? No -- the City reproduces the CEC/CRC/CFC-required label text verbatim in its Standard Plan handout rather than specifying its own custom wording. 75% · published checklist
• Does it specify letter height, colour or material? A recommendation only (not a mandatory local spec): the Standard Plan handout's informational note suggests a phenolic plaque with contrasting text/background colors, and states 'No type size is specified, but 20 point (3/8 inch) should be considered the minimum,' citing ANSI Z535.4 as general guidance. 65% · published checklist
• Is a site plan / facility map placard required, and what must it show? Yes -- a permanent plaque/directory denoting all electric power sources on the premises is required per CEC 705.12, and a roof plan/diagram showing panel layout, access pathways, and the approximate locations of electrical disconnects and roof access points must be submitted and reflects what must appear at the site. 80% · published checklist
• Where must the labels be placed? At the PV system DC disconnect; at the PV system AC disconnect / point of utility connection; at or near the main service panel (dual-power-source placard); and on junction/combiner boxes and along exposed conduit runs (repeated every 10 feet). 80% · published checklist

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 70% · published checklist
• Are batteries permitted, and under what conditions? Batteries are excluded from the City's expedited/ministerial residential solar review path; the published Solar Eligibility Checklist requires the system be 'utility interactive and without battery storage' to qualify. Battery-inclusive systems fall outside MMC 10.20.030 and would be reviewed under the standard (non-expedited) building/fire permit process, subject to the base 2025 California Fire Code Chapter 12 (Energy Systems) as locally adopted -- no residential-specific local ESS amendment beyond the unrelated BIPV pathway exception (MMC 10.28.044) was found. 75% · published checklist
• Is there a separate ESS permit or inspection? Not clearly established as a distinct line item. 55% · fee schedule
• Is a ground mount treated as a structure? By inference only -- likely yes, but not an explicit codified rule. 65% · municipal code
• Is there a local rule on service upgrades or busbar sizing? Interconnection eligibility for the City's expedited Standard Plan/Eligibility Checklist path is limited to a single-phase 120/240V service with a main bus bar rating of 225A or less; this is a checklist-level standard, not a separately codified municipal ordinance section. 75% · published checklist
• Is a specific mounting system or attachment spacing required? The City's Solar Structural Criteria handout specifies attachment/spacing tables for flush-mounted racking on wood-framed 1-2 family dwellings (parallel to and close to the roof surface), including rafter-span and attachment-point tables; this is a generic statewide template document rather than a codified local ordinance provision. 60% · 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? Phone 95% · department page
• How much notice is required? Effectively about 1 business day: inspections requested before 5:00 p.m. are scheduled for the next business day; note the City is closed every Friday (Mon-Thu 4-day work week), so a Thursday call books a Monday inspection. 90% · department page
• Are same-day or AM/PM windows offered? Not generally offered -- specific AM/PM requests are only accommodated if the inspector's schedule allows. 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 90% · department page
• If delegated, to whom? N/A -- not delegated. 90% · 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? For MMC 10.20.030-eligible small residential rooftop PV: a single consolidated final inspection is required (no separate rough-in). For larger/non-qualifying systems (which fall back to standard building/electrical permit review), the standard rough-in-then-final inspection sequence applies as for any electrical service/panel work. 75% · municipal code
• Is a rough-in or mid-roof inspection required? No (for the expedited/ministerial path) 85% · 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 80% · published checklist
• What must be on site at inspection? The approved/stamped plan set on site with the inspection card posted; the installation must match the approved plans and be ready/complete for the specific inspection requested; a responsible adult must be present. 80% · department page
• Does the inspector verify labels and listings? Yes 80% · published 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 (a final building-inspection sign-off); no Certificate of Occupancy is issued for an alteration/addition to an existing single-family dwelling, and no 'green tag' terminology appears in any City document reviewed. 55% · department page
• Is there a re-inspection fee? $198.00 85% · fee schedule
• How are corrections issued and cleared? A written correction notice detailing all deficiencies and any additional information required is issued by the Building Official; the applicant then resubmits to clear the corrections before administrative approval/permit issuance. 80% · municipal code