Solar Permit in Jefferson County, Colorado
Permit required
Yes, a permit is required
Before installing any residential rooftop or ground-mounted solar PV system
Issued byJefferson County Division of Building Safety
By Mario Bailey, verified against official sources
Quick answer
An Electrical Permit is required for residential photovoltaic solar installations in unincorporated Jefferson County; plan review is not required for typical residential PV, but engineering is required if a roof-mount adds more dead load than the roof was designed for. Flush roof-mounted panels need no separate zoning permit, but panels raised up to 5 feet above the roof need a Miscellaneous Permit from Planning and Zoning in addition to the Electrical Permit. Residential solar permit fees are capped at $500.
Typical threshold: Roof-mounted solar panels flush against the roof need no Planning and Zoning permit but always need an Electrical Permit. Panels raised up to 5 feet above the roof need a Miscellaneous Permit from Planning and Zoning in addition to the Electrical Permit. Ground-mount and commercial grid-sale systems have additional requirements.
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 contractor license active in this locality, and under which business name?
When a permit is usually needed
Before installing any residential rooftop or ground-mounted solar PV system
What a solar permit costs in Jefferson County
How Jefferson County compares in Colorado
No Colorado jurisdiction we have verified sets a size threshold for this permit, so what actually differs between them is the fee.
| Jurisdiction | Permit needed? | Typical fee |
|---|---|---|
| Aurora | Permit required | On the 2026 flat-rate schedule (Form #A175, footer "Flat-Rate Fee (Revised... |
| Denver | Permit required | $50 flat permit fee for the solar photovoltaic portion of a project with no... |
| Jefferson Countythis page | Permit required | Solar permit fees are capped at $500 for residential systems, per the county... |
How to apply in Jefferson County
In Jefferson 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 Jefferson 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 Jefferson 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 Jefferson 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. Jefferson County Division of Building Safety sets the exact checklist for Jefferson County.
Where to apply in Jefferson County:
Jefferson County Division of Building Safety
- 100 Jefferson County Parkway, Suite 3540, Golden, CO 80419
- Phone: 303-271-8260
Solar Permit in Jefferson County compared with nearby Colorado localities
| Locality | Permit needed? | Threshold | What each Colorado schedule says | Verified |
|---|---|---|---|---|
| Jefferson County | Permit required | Roof-mounted solar panels flush against the roof need no Planning and Zoning permit but always need an Electrical Permit. Panels raised up to 5 feet above the roof need a Miscellaneous Permit from Planning and Zoning in addition to the Electrical Permit. Ground-mount and commercial grid-sale systems have additional requirements. | Solar permit fees are capped at $500 for residential systems, per the county Building... | |
| Aurora | Permit required | Not specified | On the 2026 flat-rate schedule (Form #A175, footer "Flat-Rate Fee (Revised 08/2026)")... | |
| Denver | Permit required | Not specified | $50 flat permit fee for the solar photovoltaic portion of a project with no plan review... |
Inspections and closing out your permit
In Jefferson 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 Jefferson 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 Jefferson 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 Jefferson 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 Jefferson 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 Jefferson 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 Jefferson 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 Jefferson County permit portal or by phone at 303-271-8260.
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 Jefferson County
- Confirm the requirement. Yes, a permit is required. Typical threshold: Roof-mounted solar panels flush against the roof need no Planning and Zoning permit but always need an Electrical Permit. Panels raised up to 5 feet above the roof need a Miscellaneous Permit from Planning and Zoning in addition to the Electrical Permit. Ground-mount and commercial grid-sale systems have additional requirements. Usually needed: Before installing any residential rooftop or ground-mounted solar PV system.
- Budget the fee. Solar permit fees are capped at $500 for residential systems, per the county Building Permit Fee Schedule. Official fee schedule.
- Apply. In Jefferson 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 Jefferson County permit portal.
- Keep the office details handy. Jefferson County Division of Building Safety. Phone: 303-271-8260. Address: 100 Jefferson County Parkway, Suite 3540, Golden, CO 80419.
- Plan for inspections. In Jefferson 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 Jefferson County?
- An Electrical Permit is required for residential photovoltaic solar installations in unincorporated Jefferson County; plan review is not required for typical residential PV, but engineering is required if a roof-mount adds more dead load than the roof was designed for. Flush roof-mounted panels need no separate zoning permit, but panels raised up to 5 feet above the roof need a Miscellaneous Permit from Planning and Zoning in addition to the Electrical Permit. Residential solar permit fees are capped at $500. Always confirm with the Jefferson County Division of Building Safety before starting.
- How much does a solar permit cost in Jefferson County?
- Solar permit fees are capped at $500 for residential systems, per the county Building Permit Fee Schedule. See the official fee schedule for current amounts.
- Where do you apply for a solar permit in Jefferson County?
- You can apply through the Jefferson County permit portal or contact the Jefferson County Division of Building Safety directly. The links are listed on this page.
- Can a homeowner pull a solar permit themselves in Jefferson County?
- Under Colorado law (C.R.S. 12-115-116(2); C.R.S. 12-115-120(11)(c); C.R.S. 12-155-118(2); C.R.S. 12-155-120(11)(c)): Colorado's state electrical law has a homeowner exception: under C.R.S. 12-115-116(2), you do not need an electrician's license to do electrical work on your own property or residence, as long as all the work, other than maintenance or repair of existing systems, is inspected under the state law. The exception does not apply if the property is intended for sale or resale by someone in the construction or remodeling business, is rental property, or is generally open to the public. A homeowner performing work on the homeowner's home is a qualified applicant who may pull the state electrical permit under C.R.S. 12-115-120(11)(c), and plumbing mirrors this: C.R.S. 12-155-118(2) allows unlicensed plumbing work on your own property or residence with the same carve-outs, and C.R.S. 12-155-120(11)(c) lets a homeowner pull the state plumbing permit. The State Electrical and Plumbing Boards at DORA require that the homeowner personally perform the work, that it be inspected before cover and again at completion, and that it meet the National Electrical Code or the adopted plumbing codes. Colorado has no statewide general contractor license: Title 12 licenses electricians and plumbers at the state level, and general building contractors are licensed, if at all, by the individual city or county. Confirm how Jefferson County applies this before you apply.
From the Library
What else needs a permit in Jefferson County
Every other permit type we have verified for this jurisdiction, with the rule that applies here.
| Project | Permit needed? | Threshold | Typical fee |
|---|---|---|---|
| Deck Permit | Permit required | No exemption by height or size: a Building Permit is required for new decks, deck expansions, replacement decks, and deck repairs. Only a ground-level concrete pad, rather than an elevated deck, avoids the permit. | Billed as a building permit on the county valuation fee table starting at a $55 minimum... |
| Electrical Permit | Permit required | Not specified | Electrical permits not tied to an active building permit bill on the countywide... |
| Fence Permit | No permit needed | Not specified | No permit for fences in unincorporated Jefferson County |
| HVAC Permit | Permit required | Not specified | Mechanical permits not tied to an active building permit bill on the countywide... |
| Patio Permit | It depends | Ground-level concrete or paver patios are treated like the exempt concrete pads on the Decks page and do not need a Building Permit; patio covers, roofed patio structures, and patio enclosures (anything that adds a roof or walls) need a Building Permit. | Not published |
| Plumbing Permit | Permit required | Not specified | Plumbing permits not tied to an active building permit bill on the countywide valuation... |
| Pool Permit | Permit required | A Miscellaneous Permit is required for swimming pools of any size, in-ground or above-ground, and related structures such as diving boards and ladders; hot tubs and swim spas do not need this permit. Any electrical work for the pool needs a separate Building Safety electrical permit. | Pools of any size need a Miscellaneous Permit priced at $90 on the 2026 zoning fee table... |
| Roof Replacement Permit | Permit required | A Building Permit is required for full roof replacement. Only minor roof repairs affecting less than 25% of the total roof area and no more than 2 squares are exempt; anything larger needs a permit plus a mid-roof and a final inspection. | Full roof replacement bills as a building permit on the countywide valuation fee table... |
| Shed Permit | Permit required | Sheds, mini-structures, and shipping containers 120 sq ft or less that sit at least 10 feet from any occupied structure and are no more than 14 feet tall need only a Miscellaneous Permit; anything larger, taller, or closer than 10 feet to an occupied structure needs a full Building Permit instead. Some permit is required at every size. | Sheds 120 sq ft or less and at least 10 feet from an occupied structure need only a $90... |
Solar Permit in other Colorado localities
Everything above, sourced
Code references
National and state model-code sections the general guidance on this page is drawn from. They are not Jefferson County documents; the office above sets the local rules.
How this solar permit page for Jefferson County was verified. 3 official sources: jeffco.us, jeffco.us, jeffco.us; fee schedule: official document. Last checked by Mario Bailey, not confirmed with Jefferson County Division of Building Safety. Rules change; confirm before you build. How we verify.
Last checked: Report an error on this page
Compare Solar Permit requirements across Colorado localities