South Carolina / Charleston

Solar Permit in Charleston, South Carolina

Permit required

Yes, a permit is required

Before installing a roof-mounted or ground-mounted photovoltaic array, under permit type "Solar Panel - Single Family/Duplex dwelling" with work class "New," together with a separate "Electrical - Single Family/Duplex Dwelling" sub permit. An electric vehicle charger is a separate permit again.

Confirmed on official page Verified City of Charleston Permit Center, Development and Construction Services (Building Inspections Division)

By Mario Bailey, verified against official sources

Quick answer

Charleston requires a solar permit for residential photovoltaic panels, with no system-size, kilowatt or cost floor published in the guideline or the fee schedule and no solar entry on the statewide exemption list at S.C. Code 40-59-265. Building Inspections review is required on every array; Zoning review is added only for ground-mounted arrays and BAR review only inside a designated historic district. The submittal is heavier than in many cities: alongside the roof plan showing array locations, roof access and pathways, the city requires a structural engineer's letter, report or plan signed and sealed by a South Carolina design professional for roof-supported or ground-supported arrays, plus an electrical single-line diagram and array specifications. A separate electrical trade sub-permit is always required, and the guideline notes there are no inspections under that permit because the inspections ride on the solar permit.

Who is pulling this permit?

Hire it out

Before you sign, ask the contractor:

  • Who pulls the permit, you or me, and is the permit fee included in the bid?
  • Which inspections will this job need, and who meets the inspector on site?
  • Is your contractor license active in this locality, and under which business name?

When a permit is usually needed

Before installing a roof-mounted or ground-mounted photovoltaic array, under permit type "Solar Panel - Single Family/Duplex dwelling" with work class "New," together with a separate "Electrical - Single Family/Duplex Dwelling" sub permit. An electric vehicle charger is a separate permit again.

What a solar permit costs in Charleston

Line item
solar permitBy formulaTwo permits, two fees. The guideline charges the array as a "Residential - Alterations & Repairs permit fee per Building and Trade Permit Fee Schedule," which is a $40.00 non-refundable application fee plus "$15.00 for the first $1,000 construction valuation, plus $5.00 for each additional thousand or fraction thereof, to and including $50,000." The electrical sub-permit carries its own $40.00 application fee plus the Electrical Permit Fee Table rate of "$0.25 per ampere (amp)" for new, replacement or upgrade service. Schedule approved by Ordinance Nos. 2017-131, 2019-064 and 2019-072, effective October 1, 2019.
Fee schedule in forceOfficial scheduleRead . Fees are the jurisdiction’s; we do not mark them up or estimate them.

How to apply in Charleston

A rooftop solar PV permit application is a combined structural and electrical plan set: a site plan and roof framing details proving the array's mounting can carry its added loads, plus a one line electrical diagram covering listed modules and inverters, disconnects, and the rapid shutdown design. Utility interconnection is a separate approval that runs in parallel with the permit.

What most solar permit applications include:

  • Both a building permit and a separate electrical permit are required, since the array must be designed and installed to the residential code's solar provisions and to the National Electrical Code (IRC R324.3).
  • The plan set identifies listed equipment: PV modules listed to UL 1703 (or both UL 61730-1 and UL 61730-2), and inverters listed to UL 1741, with grid-tied inverters listed for utility interaction (IRC R324.3.1).
  • Structural drawings show that the roof framing is designed to structurally support the array and withstand the gravity loads it adds (IRC R324.4.1).
  • The site plan lays out roof access pathways at least 36 inches wide, plus a ridge setback sized to how much of the roof the array covers, so firefighters retain pathways and ventilation access (IRC R324.6.1, IRC R324.6.2).
  • The one line electrical diagram shows the rapid shutdown method and the location of its single initiation device, since one control point must bring all system conductors down to safe levels (NEC 690.12, NEC 690.56(C)).
  • Interconnecting the array to the utility grid at a defined point of connection is a separate application process from the local building or electrical permit and must be approved before the system can operate (NEC 705.12).
  • Some permitting offices route applications through SolarAPP+, an automated review platform that checks the plan set against code requirements and issues eligible permits instantly (DOE SolarAPP+).

General submittal guidance from IRC 2021 R324 (Solar Energy Systems) and NEC 2020 Article 690 (Solar Photovoltaic Systems) and Article 705 (Interconnected Power Production Sources). Source. City of Charleston Permit Center, Development and Construction Services (Building Inspections Division) sets the exact checklist for Charleston.

Where to apply in Charleston:

City of Charleston Permit Center, Development and Construction Services (Building Inspections Division)

Inspections and closing out your permit

Inspectors verify the installed array against the approved plans, and some agencies run a rough check of roof attachments and penetrations while they are still exposed before the wiring and roofing close them in. The final inspection confirms rapid shutdown, disconnects, grounding, and required labels are installed correctly, and the system cannot be energized until the utility separately approves interconnection.

  1. Where an agency runs a rough or pre-inspection, it checks the array's roof penetrations while they are still exposed, confirming they are flashed and sealed (IRC R324.4.3).
  2. The inspector confirms whether rapid shutdown is required, how it is accomplished, and that it is properly identified (NEC 690.12, NEC 690.56(C)).
  3. PV disconnecting means must be permanently marked and installed where they are readily accessible, which the inspector confirms in the field (NEC 690.13).
  4. Bonding and grounding of the array, including every exposed non current carrying metal part and the grounding electrode system, is checked before sign off (NEC 690.43, NEC 690.47).
  5. At the service equipment, the inspector looks for the required rapid shutdown placard, a labeled diagram showing the initiation device's location in the specified colors and letter sizes (NEC 690.56(C)).
  6. Utility interconnection is inspected and approved separately from the local building department's sign off, and the system cannot be energized until both approvals are in hand (NEC 705.12).

Schedule each inspection in advance and pass the final before you use the work or close the permit. Request inspections through the Charleston permit portal or by phone at 843-577-5550.

Inspection sequence from NEC 2020 Article 690 (690.12 rapid shutdown, 690.13 disconnects, 690.43/690.47 grounding, 690.56 labeling) and IRC 2021 R324.4.3 (roof penetrations). Source. An open permit left un-inspected can surface later in a title search or home sale.

Frequently asked questions

Do you need a solar permit in Charleston?
Charleston requires a solar permit for residential photovoltaic panels, with no system-size, kilowatt or cost floor published in the guideline or the fee schedule and no solar entry on the statewide exemption list at S.C. Code 40-59-265. Building Inspections review is required on every array; Zoning review is added only for ground-mounted arrays and BAR review only inside a designated historic district. The submittal is heavier than in many cities: alongside the roof plan showing array locations, roof access and pathways, the city requires a structural engineer's letter, report or plan signed and sealed by a South Carolina design professional for roof-supported or ground-supported arrays, plus an electrical single-line diagram and array specifications. A separate electrical trade sub-permit is always required, and the guideline notes there are no inspections under that permit because the inspections ride on the solar permit. Always confirm with the City of Charleston Permit Center, Development and Construction Services (Building Inspections Division) before starting.
How much does a solar permit cost in Charleston?
Two permits, two fees. The guideline charges the array as a "Residential - Alterations & Repairs permit fee per Building and Trade Permit Fee Schedule," which is a $40.00 non-refundable application fee plus "$15.00 for the first $1,000 construction valuation, plus $5.00 for each additional thousand or fraction thereof, to and including $50,000." The electrical sub-permit carries its own $40.00 application fee plus the Electrical Permit Fee Table rate of "$0.25 per ampere (amp)" for new, replacement or upgrade service. Schedule approved by Ordinance Nos. 2017-131, 2019-064 and 2019-072, effective October 1, 2019. See the official fee schedule for current amounts.
How long does a solar permit take in Charleston?
Possible same-visit approval. "Solar Panels (Residential)" is on the Permit Center's "Menu of 'Express' Permits (In Person Only)," which "have the possibility of receiving over-the-counter in-person approval if submitted and walked through the Permit Center from 9 a.m. to 4:30 p.m., however approval is never a guarantee.". Times can vary by workload and project scope, so confirm with the office.
Where do you apply for a solar permit in Charleston?
You can apply through the Charleston permit portal or contact the City of Charleston Permit Center, Development and Construction Services (Building Inspections Division) directly. The links are listed on this page.
Can a homeowner pull a solar permit themselves in Charleston?
Under South Carolina law (S.C. Code Ann. 40-59-260(A), (B), (C), (E), (F); 40-59-265; 40-59-280; 40-59-20(6), (7); 40-59-30(A)): South Carolina licenses residential builders and residential specialty contractors under S.C. Code Title 40 Chapter 59, and 40-59-260 exempts the owner of record who builds for himself. The exemption applies only if the owner does the work himself, with his own employees, or with licensed contractors or registered entities, if the structure is intended for the owner's sole occupancy or occupancy by the owner's family and is not intended for sale or rent, and if the general public does not have access to it. The owner must personally appear and sign the building permit application, and the local permitting agency must hand over a disclosure statement whose statutory text reads in part: You must supervise the construction yourself. You may build or improve a one-family or two-family residence. The building must be for your own use and occupancy. It may not be built for sale or rent. The sale restriction is two years and is a presumption rather than a flat bar: 40-59-260(B) makes proof of sale or rent, or of offering for sale or rent, within two years after completion or issuance of a certificate of occupancy prima facie evidence that the project was undertaken for sale or rent, which forfeits the exemption and exposes the owner to the chapter's penalties. South Carolina then adds a step no other state in this wave has: 40-59-260(E) requires the owner to promptly record a notice with the register of deeds, indexed under the owner's name in the grantor index, stating that the building was constructed by the owner as an unlicensed builder, and failure to record revokes the statutory exemption. The exemption is from the licensing chapter, not from the permit, and 40-59-280 requires the building official to refuse a permit unless the applicant furnishes evidence of licensure, registration, or exemption. Confirm how Charleston applies this before you apply.

From the Library

What else needs a permit in Charleston

Every other permit type we have verified for this jurisdiction, with the rule that applies here.

ProjectPermit needed?ThresholdTypical fee
Deck PermitPermit requiredNot specifiedA $40.00 non-refundable application fee plus a valuation-based building permit fee...
Electrical PermitIt dependsNot specifiedA $40.00 non-refundable application fee, which the schedule says "is in addition to the...
Fence PermitPermit requiredNot specifiedNo fence line item exists.
HVAC PermitIt dependsNot specifiedA $40.00 non-refundable application fee, which the schedule states "is in addition to...
Plumbing PermitIt dependsNot specifiedA $40.00 non-refundable application fee, which the schedule says "is in addition to the...
Pool PermitIt dependsprefabricated swimming poolsThe pool guideline says the Application Fee, Plan Review Fee and Building Permit Fee all...
Roof Replacement PermitPermit requiredNot specifiedThe roofing guideline sends all three fees to page 4 of the Building and Trade Permit...
Shed PermitPermit requiredNot specifiedA $40.00 non-refundable application fee plus a valuation-based building permit fee...

Solar Permit in other South Carolina localities

Everything above, sourced

Code references

National and state model-code sections the general guidance on this page is drawn from. They are not Charleston documents; the office above sets the local rules.

Verified by a person against the sources above on , not confirmed with City of Charleston Permit Center, Development and Construction Services (Building Inspections Division). Rules change; confirm before you build. How we verify.

Last checked: Report an error on this page

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