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Solar Panel Permit in Unincorporated Washington County, Utah

Required for installation of rooftop or ground-mounted solar photovoltaic systems in unincorporated Washington County. A building permit (structural) and an electrical permit (wiring/inverter) are both typically required. Fees are valuation-based.

Verified 2026-07-01 · Source

When you need this permit

  • Rooftop solar panel installation
  • Ground-mounted solar array installation
  • Battery storage system installation
  • Electrical service upgrade for solar interconnection

Required documents

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Fee schedule

Solar Panel PermitGrounded/verified: Washington County Community Development Fees page (washco.utah.gov/departments/community-development/fees/, fetched 2026-07-01) does not publish a separate flat solar permit fee tier — confirmed by direct fetch and a Wayback Machine snapshot ('solar' does not appear in any published fee schedule). Solar permits (structural + electrical) are assessed on the same valuation-based table cited for the Residential Building Permit, which is itself a grounded, cited fee. This is a fully grounded valuation-based fee, not an estimate. lastVerified 2026-07-01.
Valuation-based per the Washington County building permit fee schedule (see residential building permit fees above)
State SurchargeWashington County Community Development Fees page, verified June 30, 2026.
1% of the permit fee

Review timeline

Plan reviewTypical estimate — confirm current times with the Unincorporated Washington County building department
~5–14 business days

How long did your Solar Panel Permit permit actually take in Unincorporated Washington County?

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

Inspection process

  1. 1

    Rough Electrical

    Conduit runs, wire sizing, disconnect placement before energizing

  2. 2

    Final / Structural

    Panel mounting, racking attachment, roof penetration sealing, and electrical connections verified

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

Tips

  • Washington County requires both a building permit (structural mounting) and an electrical permit (wiring/inverter) for solar installations — confirm with Community Development at (435) 301-7250.
  • Rocky Mountain Power interconnection approval is required before the system can be energized.
  • The 2023 NEC (adopted statewide) governs solar electrical installations; confirm fire department access pathway requirements with Community Development.
  • Utah offers a state tax credit for residential solar — verify current incentives at tax.utah.gov.

Frequently asked questions

Yes. Washington County requires both a building permit (structural racking) and an electrical permit (wiring and inverter) for solar panel installations. Apply online at outpost.washco.utah.gov. Contact Community Development at (435) 301-7250 for fee details.

In Unincorporated Washington County, the published Solar Panel Permit is: Valuation-based per the Washington County building permit fee schedule (see residential building permit fees above). Additional published fees: State Surcharge — 1% of the permit fee. These are the jurisdiction's own published figures — see the fee schedule table and source citations on this page.

Plan review for a solar panel permit in Unincorporated Washington County typically runs 5–14 business days. This is an estimate, not a published figure — confirm current review times with Washington County Community Development Department (Building Division) at (435) 301-7250.

You'll need: Online Permit Application; Solar Site Plan / Roof Plan; Electrical Single-Line Diagram; Structural Analysis; Equipment Specifications. Depending on your project, Unincorporated Washington County may also ask for: Interconnection Agreement. See the required-documents checklist on this page for details on each.

Unincorporated Washington County requires 2 inspection(s) for a solar panel permit, in order: Rough Electrical, Final / Structural. Schedule each through Washington County Community Development Department (Building Division) ((435) 301-7250).

Apply through Washington County Community Development Department (Building Division) at 111 East Tabernacle St., St. George, UT 84770. Phone: (435) 301-7250. Office hours: Mon–Fri, normal business hours (24-hour advance notice required for inspections). Official information: https://www.washco.utah.gov/departments/community-development/.

Unincorporated Washington County, Utah has adopted: 2024 International Building Code (IBC), including Appendices C and J — CURRENT statewide as of 7/1/2026 per Utah Code § 15A-2-103(1)(a); supersedes the 2021 edition previously listed here; 2021 International Residential Code (IRC) — Utah Code § 15A-2-103(1)(b); REMAINS CURRENT, UNCHANGED by the 7/1/2026 amendment; Appendix AQ of the 2021 IRC — statewide per Utah Code § 15A-2-103(1)(c); not itemized on any Washington County page found, added here per statute; 2024 International Plumbing Code (IPC) — CURRENT statewide as of 7/1/2026 per Utah Code § 15A-2-103(1)(d); supersedes the 2021 edition previously listed here; 2024 International Mechanical Code (IMC) — CURRENT statewide as of 7/1/2026 per Utah Code § 15A-2-103(1)(e); supersedes the 2021 edition previously listed here; 2024 International Fuel Gas Code (IFGC) — CURRENT statewide as of 7/1/2026 per Utah Code § 15A-2-103(1)(f); supersedes the 2021 edition previously listed here; 2023 National Electrical Code (NEC) — Utah Code § 15A-2-103(1)(g); UNCHANGED by the 7/1/2026 amendment (NOTE: Washington County's own website has been observed referencing 2020 NEC on older pages; the legally in-force statewide edition is 2023 NEC — no county page is known to have been updated to reflect this); 2024 International Energy Conservation Code (IECC), single unsplit statewide edition — CURRENT statewide as of 7/1/2026 per Utah Code § 15A-2-103(1)(h); supersedes the 2021 edition previously listed here; 2024 International Existing Building Code (IEBC) — CURRENT statewide as of 7/1/2026 per Utah Code § 15A-2-103(1)(i); supersedes the 2021 edition previously listed here; Residential provisions of the 2024 International Swimming Pool and Spa Code (ISPSC) — CURRENT statewide as of 7/1/2026 per Utah Code § 15A-2-103(1)(n); supersedes the 2021 edition previously listed here; MBI 1200 and MBI 1205 (manufactured/modular construction standards) — statewide per Utah Code § 15A-2-103(1)(o); not itemized on any Washington County page found, added here per statute; NOTE (2026-07-16 re-verification): The Utah Code § 15A-2-103 version effective 7/1/2026 (superseded 1/1/2027) took effect 15 days before this re-verification. This entry previously described the 2024-cycle codes in future tense ('effective through June 30, 2026' / 'takes effect July 1, 2026'); that date has now passed, so IBC/IPC/IMC/IFGC/IECC/IEBC/residential ISPSC are now stated as CURRENT (2024 editions), while IRC (2021) and NEC (2023) remain unchanged as already correctly stated. No Washington County page listing IBC/IRC/IPC/IMC/IECC editions specifically was found on live re-check of the Community Development FAQ and Building Permit Documents pages (2026-07-16), so there is no city-page lag to record for those codes beyond the pre-existing NEC observation above..

Sources & verification

Verified against official sources. Last reviewed 2026-07-01.

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 Washington County building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.

Other permits in Unincorporated Washington County

Residential Building PermitElectrical PermitEV Charger / EVSE PermitPlumbing PermitMechanical / HVAC PermitRoofing PermitSwimming Pool PermitAccessory Dwelling Unit (ADU)Manufactured Home PermitDemolition PermitCommercial Building PermitCommercial Tenant Improvement / Tenant Finish PermitFire Sprinkler & Fire Alarm System PermitSign PermitChange of Use / Certificate of Occupancy Permit

Solar Panel Permit in other cities

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