Solar Permit in Hawaii County, Hawaii
Permit required
Yes, a permit is required
Before any new rooftop or ground-mounted photovoltaic installation, a full replacement with all new components, or moving panels between roof and ground.
Issued byCounty of Hawaiʻi Department of Public Works, Building Division
By Mario Bailey, verified against official sources
Quick answer
Hawaiʻi County requires a permit for every new solar photovoltaic system, residential or not, for replacing an existing system with all new components, and for relocating panels from roof to ground or back. Residential systems over 10 kilowatts cumulative also need electrical drawings stamped by a Hawaiʻi-licensed professional electrical engineer.
Who is pulling this permit?
Apply yourself
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 Contractors License Board (Department of Commerce and Consumer Affairs, Professional and Vocational Licensing Division) license active, and under which business name? Verify it on mypvl.dcca.hawaii.gov.
Hawaii's owner-builder rule (HRS 444-2(7), 444-2.5, 444-9.1, 444-23(e)) sets what you may do on your own home without hiring anyone. Read the statute.
When a permit is usually needed
Before any new rooftop or ground-mounted photovoltaic installation, a full replacement with all new components, or moving panels between roof and ground.
What a solar permit costs in Hawaii County
How to apply in Hawaii County
In Hawaii County, 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).
- For Hawaii County, 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).
- For Hawaii County, 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).
- For Hawaii County, 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. County of Hawaiʻi Department of Public Works, Building Division sets the exact checklist for Hawaii County.
Where to apply in Hawaii County:
County of Hawaiʻi Department of Public Works, Building Division
- 101 Pauahi Street, Suite 7 (Aupuni Center), Hilo, HI 96720; West Hawaii office: 74-5044 Ane Keohokalole Highway, Bldg E1 1st Floor, Kailua-Kona, HI 96740, (808) 323-4720
- Phone: (808) 961-8331
- Email: cohbuild@hawaiicounty.gov
Solar Permit in Hawaii County compared with nearby Hawaii localities
| Locality | Permit needed? | Threshold | What each Hawaii schedule says | Verified |
|---|---|---|---|---|
| Hawaii County | Permit required | Any size | ...Code, 2020, ord 20-61): fees are valuation-based under "General Construction": "$0... | |
| Honolulu | Permit required | Any size | ...and materials, plus a plan review fee of 20% of the permit fee (maximum $25,000)... |
Inspections and closing out your permit
In Hawaii County, 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.
- In Hawaii County: 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).
- In Hawaii County: 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)).
- In Hawaii County: pV disconnecting means must be permanently marked and installed where they are readily accessible, which the inspector confirms in the field (NEC 690.13).
- In Hawaii County: 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).
- In Hawaii County: 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)).
- In Hawaii County: 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 Hawaii County permit portal or by phone at (808) 961-8331.
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.
Your Solar Permit checklist for Hawaii County
- Confirm the requirement. Yes, a permit is required. Usually needed: Before any new rooftop or ground-mounted photovoltaic installation, a full replacement with all new components, or moving panels between roof and ground.
- Budget the fee. Hawaiʻi County Code section 5-7-3(b), "PERMIT FEES" table (Chapter 5 Construction Administrative Code, 2020, ord 20-61): fees are valuation-based under "General Construction": "$0 to $500 | $10"; $501 to $2,000 is $10 for the first $500 plus $1.50 for each additional $100; $2,001 to $25,000 is $32.50 for the first $2,000 plus $7.50 per additional $1,000; $25,001 to $50,000 is $205 for the first $25,000 plus $6 per additional $1,000; $50,001 and up is $355 for the first $50,000 plus $3 per additional $1,000. A plan review fee of twenty percent of the permit fee, minimum $50, is added (section 5-7-1). Work begun without a permit pays $1,000 plus the fee, or double the fee, whichever is greater (5-7-3(d)). Official fee schedule.
- Apply. In Hawaii County, 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. Start at the Hawaii County permit portal.
- Keep the office details handy. County of Hawaiʻi Department of Public Works, Building Division. Phone: (808) 961-8331. Address: 101 Pauahi Street, Suite 7 (Aupuni Center), Hilo, HI 96720; West Hawaii office: 74-5044 Ane Keohokalole Highway, Bldg E1 1st Floor, Kailua-Kona, HI 96740, (808) 323-4720.
- Plan for inspections. In Hawaii County, 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.
Compiled from the official sources on this page. Last checked .
Frequently asked questions
- Do you need a solar permit in Hawaii County?
- Hawaiʻi County requires a permit for every new solar photovoltaic system, residential or not, for replacing an existing system with all new components, and for relocating panels from roof to ground or back. Residential systems over 10 kilowatts cumulative also need electrical drawings stamped by a Hawaiʻi-licensed professional electrical engineer. Always confirm with the County of Hawaiʻi Department of Public Works, Building Division before starting.
- How much does a solar permit cost in Hawaii County?
- Hawaiʻi County Code section 5-7-3(b), "PERMIT FEES" table (Chapter 5 Construction Administrative Code, 2020, ord 20-61): fees are valuation-based under "General Construction": "$0 to $500 | $10"; $501 to $2,000 is $10 for the first $500 plus $1.50 for each additional $100; $2,001 to $25,000 is $32.50 for the first $2,000 plus $7.50 per additional $1,000; $25,001 to $50,000 is $205 for the first $25,000 plus $6 per additional $1,000; $50,001 and up is $355 for the first $50,000 plus $3 per additional $1,000. A plan review fee of twenty percent of the permit fee, minimum $50, is added (section 5-7-1). Work begun without a permit pays $1,000 plus the fee, or double the fee, whichever is greater (5-7-3(d)). See the official fee schedule for current amounts.
- Where do you apply for a solar permit in Hawaii County?
- You can apply through the Hawaii County permit portal or contact the County of Hawaiʻi Department of Public Works, Building Division directly. The links are listed on this page.
- Can a homeowner pull a solar permit themselves in Hawaii County?
- Under Hawaii law (HRS 444-2(7), 444-2.5, 444-9.1, 444-23(e)): Hawaii lets owners or lessees build or improve residential or farm buildings for their own use, or for use by their grandparents, parents, siblings, or children, without a contractor's license, as long as the building is not offered for sale or lease. The owner must register for the exemption with the county when applying for the building permit, supervise the work, hire licensed subcontractors for any licensed work, and use licensed electricians and plumbers for electrical and plumbing work unless the owner holds that license. Selling or leasing the structure within one year after final county inspection is treated as evidence it was built for sale, unless the permit valuation was under $10,000, the buyer is the owner's employee, or the Contractors License Board finds an unforeseen hardship. A violation carries a fine of up to $5,000 or 50% of the permitted construction value, whichever is greater, for a first offense, and bars the owner from the exemption for three years. Confirm how Hawaii County applies this before you apply.
From the Library
What else needs a permit in Hawaii County
Every other permit type we have verified for this jurisdiction, with the rule that applies here.
| Project | Permit needed? | Threshold | Typical fee |
|---|---|---|---|
| Bathroom Remodel Permit | It depends | When the remodel moves or replaces pipes or valves, adds wiring, or alters walls or... | ...Code, 2020, ord 20-61): fees are valuation-based under "General Construction": "$0... |
| Deck Permit | It depends | height of a detached deck or platform; an attached deck is not exempt | $10 per 100 sq. ft. or fraction thereof." Plan review fee of twenty percent of the... |
| Electrical Permit | It depends | Before any new wiring, circuit, service change or rewiring | ...Code, 2020, ord 20-61): fees are valuation-based under "General Construction": "$0... |
| EV Charger Permit | Permit required | Any size | ...Code, 2020, ord 20-61): fees are valuation-based under "General Construction": "$0... |
| Fence Permit | It depends | height of a fence; retaining walls follow a separate four foot rule | ...Code, 2020, ord 20-61): fees are valuation-based under "General Construction": "$0... |
| HVAC Permit | It depends | Before installing, removing, altering, repairing or converting any heating, ventilation... | ...Code, 2020, ord 20-61): fees are valuation-based under "General Construction": "$0... |
| Plumbing Permit | It depends | Before replacing or rearranging any pipe or valve, adding fixtures, or any gas, water... | ...Code, 2020, ord 20-61): fees are valuation-based under "General Construction": "$0... |
| Pool Permit | It depends | water features and swimming pools at one and two-family dwellings | ...Code, 2020, ord 20-61): fees are valuation-based under "General Construction": "$0... |
| Roof Replacement Permit | It depends | When the new roof uses a different material, or the work affects structural components | ...Code, 2020, ord 20-61): fees are valuation-based under "General Construction": "$0... |
| Shed Permit | It depends | floor area of a detached one-story accessory structure on residential zoned land; 1,000 sq ft on agricultural zoned land, 15 feet height limit, 10 feet from property line | $10 per 100 sq. ft. or fraction thereof." Plan review fee of twenty percent of the... |
| Water Heater Permit | Permit required | Any size | ...Code, 2020, ord 20-61): fees are valuation-based under "General Construction": "$0... |
Solar Permit in other Hawaii localities
Everything above, sourced
Code references
National and state model-code sections the general guidance on this page is drawn from. They are not Hawaii County documents; the office above sets the local rules.
How this solar permit page for Hawaii County was verified. 2 official sources: hawaii-county-public-works-hawaiicountygis.hub.arcgis.com, hawaii-county-public-works-hawaiicountygis.hub.arcgis.com; fee schedule: official document. Last checked by Mario Bailey, not confirmed with County of Hawaiʻi Department of Public Works, Building Division. Rules change; confirm before you build. How we verify.
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