How Solar Permit Fees Are Calculated
Solar permit fees are set by each individual Authority Having Jurisdiction (AHJ) — your county or city building department. There is no state-level standardization of permit fees in most states. Fees typically fall into one of three calculation methods:
- Flat fee: A fixed dollar amount regardless of system size. Common in smaller counties and municipalities. Range: $50–$500.
- Valuation-based fee: Calculated as a percentage of the project's fair market value (typically 1–3%). A $25,000 system at 1.5% would yield a $375 permit fee. Most common in larger jurisdictions.
- Tiered by system size: Different fee brackets based on kW DC capacity. Common in jurisdictions with high solar volume that have standardized the process.
Most residential solar installations also require an electrical permit in addition to the building permit. These are sometimes bundled (one fee covers both) and sometimes separate (two separate applications and fees). Your installer should clarify which permits are required and what each costs before submitting.
Permit Fee Ranges by State
| State | Typical Range (5–10kW system) | Calculation Method | Notes |
|---|---|---|---|
| Arizona | $150–$500 | Valuation-based | Maricopa County: $150–$400; expedited track available for <10kW |
| California | $200–$900 | Valuation-based or tiered | Wide variation by city/county; LA County: $300–$800; San Diego: $200–$600 |
| Colorado | $150–$400 | Valuation-based | Jefferson County: $150–$350; Boulder County: $175–$400 |
| Florida | $200–$900 | Valuation-based | Miami-Dade (HVHZ): $400–$900; Orange County: $200–$600 |
| Georgia | $175–$500 | Valuation-based | Fulton County: $200–$500; Gwinnett County: $150–$400 |
| North Carolina | $175–$500 | Valuation-based; dual permit | Wake County requires building + electrical permit (separate fees) |
| New Jersey | $250–$700 | Valuation-based | Higher density markets have higher fees; Bergen County: $250–$600 |
| New York | $300–$800 | Valuation-based | NYC has additional DOB fees; Nassau/Suffolk: $250–$700 |
| Ohio | $150–$500 | Valuation-based | Franklin County (Columbus): $200–$500 |
| Texas | $100–$400 | Flat or valuation-based | Lower than most states; Harris County: $100–$300 |
Penalty Fees for Unpermitted Work
If solar is installed without a permit and the AHJ discovers it, most jurisdictions assess a penalty fee on top of the standard permit fee for retroactive permitting. This penalty is typically 2–3x the standard fee. A permit that would have cost $300 at the time of installation may cost $600–$900 retroactively — plus any required corrections. See: What Happens If You Install Solar Without a Permit.
What the Permit Fee Covers
The permit fee covers the AHJ's plan review staff time to evaluate your documents and the inspector's time for site visits. It does not cover: your utility's interconnection application (usually free for residential systems, or a nominal fee); your installer's time to prepare and submit documents (included in installation contract); or any fees for plan revisions if your initial application requires correction.
Use our Permit Wizard to get a fee estimate for your specific county.
Frequently Asked Questions
This varies by installer and contract. Most installers include permit fees in their total project cost and handle payment directly. Some pass the fee through as a line item. Confirm before signing: ask whether permit fees are included in the quoted price and whether your installer will provide you the permit number after submission.
Yes — in most solar loan and lease/PPA structures, permit fees are rolled into the total project cost and therefore included in the financed amount. If you're paying cash, permit fees are typically paid by the installer and invoiced to you as part of the final project cost.
Fee structures reflect local cost-of-living, staffing costs, and policy decisions. Cities with high housing markets (Los Angeles, San Jose, Miami) tend to have higher permit fees across all project types, including solar. Some jurisdictions deliberately set low solar permit fees as a policy choice to encourage adoption. The range nationally for a standard residential solar permit runs from under $100 to over $1,000.