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Solar Photovoltaic (PV) Permit in Unincorporated Cassia County, Idaho

Required for installation of rooftop or ground-mount solar photovoltaic systems in unincorporated Cassia County. No solar-specific fee line item is published; the structural/mounting portion is billed under the same square-footage/IBC 2003 Valuation Table 1 building permit fee used for general construction. Electrical, plumbing, and HVAC permits and inspections are handled entirely by the State of Idaho Department of Building Safety (part of DOPL), not the County.

Verified 2026-07-20 · Source

When you need this permit

  • Building permit required for the structural/mounting portion of a solar PV installation, calculated based on square footage using the IBC 2003 Valuation Table 1, issued by Cassia County Zoning and Building Department per County Code 11-1-6
  • The ELECTRICAL interconnection portion of a solar PV installation requires a SEPARATE permit from the Idaho Department of Building Safety (dbs.idaho.gov/permits), not Cassia County — per the County's own Permit Information page: 'For Electrical, Plumbing and HVAC Inspections & Permits Idaho Dept. of Building Safety online'
  • Request for inspections must be given at least six (6) business hours in advance
  • Non-refundable Residential Plan Review fee applies, credited toward the total building permit fee

Required documents

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Fee schedule

Building permit feeCassia County Administrative Fees schedule, Building Department section — no distinct solar line item published; fee amount authorized by Board of County Commissioners resolution per County Code 11-1-6
Calculated based on square footage using the IBC 2003 Valuation Table 1
Plan Review — ResidentialNon-refundable, applied to total building permit fee; Cassia County Administrative Fees schedule
$200.00
Re-inspection / not-ready-for-inspection feeCharged if the project is not ready for inspection at the scheduled appointment time; Cassia County Building Permit Application (2025)
$30.00 per hour (1 hour minimum)

Review timeline

Plan review
Not published — contact the department

How long did your Solar Photovoltaic (PV) Permit permit actually take in Unincorporated Cassia County?

Anonymous — one question, no email. Answers are combined and only shown once at least 5 people have reported.

Inspection process

  1. 1

    Structural/Mounting Final (County)

    Racking attachment, roof penetration sealing, and structural load compliance verified by Cassia County

  2. 2

    Electrical Interconnection (Idaho DBS, separate permit)

    Conduit, disconnects, inverter, and interconnection point verified under the separate state electrical permit

See the full Unincorporated Cassia County inspection guide — scheduling & re-inspection fees →

Tips

  • A rooftop solar installation in unincorporated Cassia County typically requires TWO separate permits: a County building permit for the mounting/structural work (IBC 2003 Valuation Table 1) and a State (Idaho Department of Building Safety) electrical permit for the interconnection — Cassia County does not issue electrical, plumbing, or HVAC permits at all.
  • Schedule inspections at least 6 business hours in advance — a re-inspection or not-ready fee of $30.00/hour (1-hour minimum) applies if the project isn't ready when the inspector arrives.

Frequently asked questions

Unincorporated Cassia County requires a solar photovoltaic (pv) permit for: Building permit required for the structural/mounting portion of a solar PV installation, calculated based on square footage using the IBC 2003 Valuation Table 1, issued by Cassia County Zoning and Building Department per County Code 11-1-6; The ELECTRICAL interconnection portion of a solar PV installation requires a SEPARATE permit from the Idaho Department of Building Safety (dbs.idaho.gov/permits), not Cassia County — per the County's own Permit Information page: 'For Electrical, Plumbing and HVAC Inspections & Permits Idaho Dept. of Building Safety online'; Request for inspections must be given at least six (6) business hours in advance; Non-refundable Residential Plan Review fee applies, credited toward the total building permit fee. If your project isn't listed, confirm with Cassia County Zoning and Building Department at 208-878-7302 before starting work.

In Unincorporated Cassia County, the published Building permit fee is: Calculated based on square footage using the IBC 2003 Valuation Table 1. Additional published fees: Plan Review — Residential — $200.00; Re-inspection / not-ready-for-inspection fee — $30.00 per hour (1 hour minimum). These are the jurisdiction's own published figures — see the fee schedule table and source citations on this page.

Unincorporated Cassia County does not publish a plan-review timeline for this permit. Contact Cassia County Zoning and Building Department at 208-878-7302 for current turnaround.

You'll need: Cassia County Building Permit Application; Idaho Department of Building Safety Electrical Permit. See the required-documents checklist on this page for details on each.

Unincorporated Cassia County requires 2 inspection(s) for a solar photovoltaic (pv) permit, in order: Structural/Mounting Final (County), Electrical Interconnection (Idaho DBS, separate permit). Schedule each through Cassia County Zoning and Building Department (208-878-7302).

Apply through Cassia County Zoning and Building Department at Cassia County Courthouse, 1459 Overland Ave., Room 210, Burley, ID 83318. Phone: 208-878-7302, email: bldgdept@cassia.gov. Office hours: Mon–Fri 8:30 AM – 5:00 PM. Official information: https://www.cassia.gov/permit-information.

Unincorporated Cassia County, Idaho has adopted: 2018 International Building Code (IBC), including appendices E, G, H, and I — adopted via Cassia County Code Title 11, Chapter 1 (11-1-1), effective January 1, 2021; 2018 International Residential Code (IRC), including parts I–IV and IX, and appendices H, J, Q, and S — adopted via Title 11, Chapter 1; 2018 International Existing Building Code (IEBC) — adopted via Title 11, Chapter 1; 2018 International Energy Conservation Code (IECC) — adopted via Title 11, Chapter 1; 2018 International Fire Code (IFC) — adopted via Title 11, Chapter 1; Idaho Manufactured Home Installation Current Standard — adopted via Title 11, Chapter 1; 1997 Uniform Code for Abatement of Dangerous Buildings — adopted via Title 11, Chapter 1. Local amendments apply — see the Unincorporated Cassia County overview page for the full list.

No. Per the County's own Permit Information page, Electrical, Plumbing, and HVAC inspections and permits are issued by the Idaho Department of Building Safety (dbs.idaho.gov/permits), not Cassia County. The County issues only the building permit for the structural/mounting portion.

Sources & verification

Verified against official sources. Last reviewed 2026-07-20.

Fees, timelines, and adopted codes are researched from each jurisdiction's published records — see how we verify. Requirements change and vary by project, so always confirm the current details with the Unincorporated Cassia County building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.

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Solar Photovoltaic (PV) Permit in other cities

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