City of Mount Shasta

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 92% · department page
• What does this authority permit itself, and what does it delegate? Both — City's own Building Department issues and inspects both the building and electrical permits for residential PV. Note: day-to-day plan check/inspection is delivered by an individually contracted Building Official (Leo DePaola, contract building official per 2024 council record and current staff directory) rather than city staff, but this is a staffing/services contract, not a delegation of jurisdiction to another agency — the City remains the AHJ of record. Siskiyou County's Resource Management Dept. is NOT involved in Mt. Shasta building/electrical permitting. 80% · department page + directory listing
• Is a permit required for a residential rooftop PV system? Yes 90% · ordinance
• Is there a separate electrical permit, or is it combined? Combined — a single 'Building Permit Application' (rev. Nov 2022) is used for all trades; no separate stand-alone electrical-permit application was found on the Building Department's document list. 68% · permit application form
• Is a HOA or architectural approval required first? No — architectural/design review by the City is limited to commercial and multi-family projects ('For commercial and multi-family projects, architectural review may be required. Please review the Mt. Shasta Architectural Design Guidelines'); standard single-family rooftop PV is not shown to require it. A private HOA could still require its own approval, but that is outside City jurisdiction. 68% · department page
• Is there a historic-district review? No 65% · ordinance (chapter index + full text)
• Is a wind or windstorm certification required? No 85% · design criteria page
• Is a Specific Use Permit or Council approval ever required? No, not for a typical single-family rooftop PV installation — Conditional Use Permits/Council approval are shown in Title 18 to apply to specific listed uses (e.g., exceeding height limits, planned developments, certain commercial uses), not standard accessory rooftop solar. 62% · ordinance
• Is there a system-size cap on residential generation? No City-imposed system-size cap was found in Title 15 or 18 MSMC; any practical ceiling on residential system size instead comes from the interconnecting utility's net-metering/interconnection tariff (Pacific Power net billing) and CPUC Rule 21, not from the City. 62% · ordinance (absence) + utility program

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 — the City's Building Permit Application allows the permit to be issued in the name of either the licensed contractor or the property owner, who becomes the permit holder of record responsible for the work. 82% · permit application form
• Must the contractor be registered with this authority before applying? Yes, in the limited sense of a City business license/local license number — the City's own Building Permit Application has a dedicated 'City License No.' field (distinct from the CA CSLB license class/number field) for contractors, implying local business-license registration is checked at intake, though no separate advance 'contractor registration with the Building Department' process is published. 60% · permit application form
• Is a homeowner permitted to self-install and self-permit? Yes 85% · permit application 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? Two complete sets of construction plans plus two sets of supporting documents (wet-stamped/signed by a CA-licensed architect or engineer when required by the Business & Professions Code); plans must show applicable Title 24 codes, occupancy group, a plot/site plan to scale showing the building relative to property lines, foundation plan, floor plan(s) including electrical/plumbing/mechanical, framing plans, and (if trusses used) a truss layout plan with truss engineering for each truss type. 88% · published checklist
• How many copies, and in what format? Two complete sets of plans and two sets of supporting documents. 88% · published checklist
• Is a site plan required, and what must it show? Yes — a plot/site plan drawn to scale is required, showing the building in relation to the property lines; the City publishes an actual 'Example Site Plan' drawing as a model. 85% · published checklist
• Is a one-line / three-line diagram required? Yes (inferred) — the City's submittal package requires an 'Electrical' floor plan as part of the full plans set, and the interconnecting utility (Pacific Power/PacifiCorp) explicitly requires 'a simple one-line drawing and site plan for your system' to be included with its own interconnection application. 65% · utility DG manual + department checklist
• Is a structural PE stamp required, and at what threshold? No published numeric threshold. The City's own 'Design Criteria' page and Building Permit Process Overview state the structural design values to use (Ground Snow Load 86 psf; Residential Live Roof Load 60 psf; Basic Wind Speed 80 mph fastest-mile / 95 mph 3-sec gust; seismic per CBC §1613/ASCE 7-05) and say 'additional engineering may be required' for lateral wind/seismic analysis, hold-down connections, or unusually configured construction, and that a grading plan needs an 'appropriately licensed professional' if earthwork is proposed — but no specific weight, span, or system-size trigger for a required PE stamp on a PV mounting system is published anywhere found. 60% · design criteria page

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? None identified — the City does not appear to operate an online permit portal (e.g., no eTRAKiT/Accela/CitizenServe/EnerGov branding found anywhere on mtshastaca.gov). Applications are submitted in person or by mail to the Building Department counter at 305 N. Mt. Shasta Blvd., with digital submission possible only by emailing Building@mtshastaca.gov, and payment is taken at time of submittal. 72% · department page
• Can the whole application be completed online? No 78% · department page
• What does a residential solar permit cost? Up to roughly $601 for a typical residential rooftop PV permit: a Building Permit fee/deposit calculated from project valuation (line item 'Solar Residential Deposit,' capped at $450.00) plus an explicit flat 'Solar For Residential' Plan Check Fee of $151.00. 75% · fee schedule
• How is the fee calculated? Valuation (with a flat, separately-stated plan-check fee on top) — the base permit fee/deposit for solar is valuation-based (capped), and a fixed $151 plan-check fee is charged in addition, per the City's own fee schedule. 72% · fee schedule
• Is there a separate plan-check fee? Yes — $151.00 flat, stated explicitly for residential solar. 88% · 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? No PV-specific turnaround is published; the closest general categories on the City's own Building Department plan-review turnaround table are 'Single Family Dwelling and Additions' at 21 working days, or, if solar is treated as a minor electrical alteration, 7 working days for 'Minor Electrical ... Alterations Done Over the Counter.' The Building Guidelines packet separately states state code allows up to 30 days for plan review. 68% · department page
• Which utility handles interconnection here? Pacific Power (PacifiCorp) — not PG&E. Mount Shasta sits in Siskiyou County, part of PacifiCorp's Pacific Power northern-California service territory (with Del Norte, Modoc and Shasta counties), which is documented in PacifiCorp's own CPUC filings and includes a PacifiCorp substation in the Mt. Shasta area. 88% · utility source + CPUC filing
• Where does the utility sit in the sequence? Parallel/mixed — Pacific Power's own published rooftop-solar sequence has the customer submit the utility interconnection (PowerClerk) application before or alongside pulling City permits and starting installation, but the system may not be energized/activated until AFTER the City's inspection passes and the sign-off photos are uploaded to the utility, which then issues Permission to Operate and sets the meter. 75% · utility DG manual

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 by floating reference as the 'current edition' of the California Electrical Code (2025 CEC/Title 24 Part 3, effective Jan. 1, 2026), which is itself based on the 2023 NEC. 82% · adopting ordinance
• Which building code edition is in force? 2025 California Building Code (Title 24, Part 2), effective Jan. 1, 2026 — adopted by floating reference, with several older local amendments (fire-zone wood-siding rules, roof slope, wood-burning appliances) layered on top. 80% · adopting ordinance
• Which fire code edition is in force? 2025 California Fire Code (Title 24, Part 9) — adopted by floating reference, no local amendment found beyond a since-repealed penalty section. 78% · adopting ordinance
• Are there local amendments to any of the above? Yes to the Building Code (legacy local amendments remain codified — Sections 15.04.040 fire-zone wood-siding rules dating to the 1964 UBC, 15.04.050 wood-burning appliances, 15.04.060 roof slope); No to the Electrical Code and Fire Code, whose chapters (15.40, 15.06) contain only the floating-adoption section with no substantive local amendment. 78% · ordinance (chapter index)
• What is the installation judged against? The current California Electrical Code (CEC), as floating-adopted by MSMC 15.40.010, with no local electrical amendment — i.e., the installation is judged against whatever CEC/NEC edition is currently mandated statewide (2023 NEC via the 2025 CEC as of this survey date). 78% · ordinance

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 Mount Shasta 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, applicable via the current CEC (2023 NEC-based cycle) that the City floating-adopts with no local amendment or exception. 75% · ordinance (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.

• Which placards does this authority require at the service equipment? Two utility-mandated placards are required at the service equipment for a grid-tied system: a label on the meter base reading 'Parallel Generation On Site,' and a label on the AC disconnect switch reading 'Manual Disconnect for Parallel Generation' (numbered '1 of X' if multiple switches). If a battery/ESS with its own disconnect is present, an additional placard stating the battery's location and how to visually confirm it is shut down is required. The City itself has no separate placard ordinance beyond whatever the adopted NEC (690/705) and CFC require. 82% · utility DG manual
• Does the authority specify placard wording of its own? Yes, but by the UTILITY (Pacific Power), not the City. The City has not published any placard-wording ordinance of its own — Title 15 (Buildings) has no signage/labeling chapter. 80% · utility DG manual
• Does it specify letter height, colour or material? Yes, but again set by the UTILITY, not the City: red background with white engraving, on metal or hard plastic, with the AC-disconnect director placard (used when the disconnect sits away from the meter) specifying lettering at least 1/4 inch tall (comparable to 25-point Arial) and a map-style layout that Pacific Power must approve before installation. 82% · utility DG manual
• Is a site plan / facility map placard required, and what must it show? Yes, in the form of a utility-required 'director placard' — required only when the AC disconnect switch is located away from the meter base; it must be a permanent, red-background/white-engraving, map-style placard mounted at the meter base showing the precise location of the remote AC disconnect, submitted to and pre-approved by Pacific Power (as a JPG/PNG/BMP image, not a CAD screenshot) before installation. No separate City-required facility/site-plan placard (beyond this utility one) was found. 75% · utility DG manual
• Does the UTILITY specify placards beyond the AHJ's? Yes — extensively. Pacific Power's own published documents specify AC-disconnect location/distance, lockability, load-break rating, placard wording, color, lettering size, and a battery-ESTOP placard spec, none of which are duplicated anywhere in Mt. Shasta's own Municipal Code. 85% · utility DG manual
• Where must the labels be placed? On the meter base (main placard) and on the AC disconnect switch itself; in California specifically, the AC disconnect switch must be installed within 3 feet of the meter base (unless Pacific Power grants written permission for a greater distance, in which case a director placard is required at the meter instead). 80% · utility DG 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? In California, the AC disconnect switch must be installed within 3 feet of the utility meter base (per Pacific Power's own published distance table), unless Pacific Power grants written permission for it to be located further away, in which case a director placard showing its exact location must be posted at the meter. 82% · utility DG manual
• Must equipment be on a specific approved list? Not by the City. The interconnecting utility (Pacific Power) requires inverters to be IEEE 1547 and UL 1741 certified as a condition of interconnection; the City itself publishes no separate approved-equipment list in Title 15 or 18 MSMC. 72% · utility DG manual
• Are batteries permitted, and under what conditions? Not locally restricted beyond whatever the currently-adopted California Fire Code (floating-adopted, no local amendment) allows for residential energy storage systems; the interconnecting utility (Pacific Power) separately requires any battery to have its own lockable, clearly-marked disconnect within 3 feet of the meter plus a placard stating the battery's location and shutdown indicator. 58% · utility DG manual (city ordinance not found)
• Is a ground mount treated as a structure? Likely yes, by inference from the general municipal-code definition of 'structure' and the accessory-building rules (15-ft height limit, setback from front of the main building) in MSMC 18.20.160 — but no Mt. Shasta provision names 'ground-mounted solar' specifically, so this is an inference from the general accessory-structure rule, not a direct statement. 55% · ordinance (inference)
• Is a specific mounting system or attachment spacing required? No City-specific mounting-system or attachment-spacing ordinance was found; roof-mounted solar equipment is explicitly exempted from the City's mechanical-equipment screening rules in the Objective Design Standards (Title 18, Appendix A), and structural attachment is instead governed by the current CBC/ASCE 7 wind and snow design values the City publishes (Ground Snow 86 psf; Residential Roof Live Load 60 psf; Basic Wind Speed 80 mph fastest-mile/95 mph 3-sec gust). 60% · ordinance + design criteria page

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 — via the Building Department's published Inspection Request Line, (530) 926-7510. 85% · department page
• How much notice is required? 24-hour notice required. 88% · 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 inspection (building and electrical combined) through its contracted Building Official; it is not delegated to Siskiyou County or a third-party agency. 72% · department page + directory listing
• If delegated, to whom? N/A — not delegated (see q52); inspection is performed directly by the City's own (contracted) Building Official. 72% · 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.

Nothing recorded for City of Mount Shasta on this step yet — 2 questions checked and found unpublished. The guidance above is general.

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.

• Does the inspector verify labels and listings? Not explicitly published for PV, but inferred as standard practice for any final electrical inspection under the adopted CEC — a City electrical/combination inspector verifying an NEC-governed installation would, as a matter of code compliance, check equipment listing and required labels as part of the routine final sign-off. 50% · ordinance (inference)

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/electrical inspection sign-off) rather than a separate Certificate of Occupancy — standard California municipal practice for an accessory improvement to an already-occupied single-family home is a final inspection approval, not a new CO. 55% · department page (inference)
• Who notifies the utility for PTO? Installer/customer — per Pacific Power's own published process, the installer/customer uploads the City's inspection approval (photos/sign-off) and label photos directly into Pacific Power's PowerClerk system, which then triggers the utility's own meter-set and Permission to Operate; the City itself does not notify the utility. 75% · utility DG manual