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Electrical Permit in Unincorporated Natrona County, Wyoming

Required for electrical installations, service changes, and repairs in unincorporated Natrona County. Natrona County holds LOCAL delegated electrical enforcement authority (BLDG L/L, ELEC L/L per the WY State Fire Marshal jurisdictions chart) — the county's OWN Building Department issues and inspects electrical permits under the adopted 2023 NEC; this is NOT the WY State Fire Marshal's default statewide electrical program.

Verified 2026-07-01 · Source

When you need this permit

  • Electrical Permit Application submitted to the Natrona County Building Department (in person, mail, or online via ViewPointCloud)
  • Specify nature of building (Residential/Commercial) and nature of project (New Construction, Basement Finish, Addition, Remodel, Repair, Service New/Repair/Replacement, Backup Generator, Solar/PV Installation)
  • Service Type (New/Existing/Temporary) with Amps and Volts must be specified
  • Job valuation must be declared — fee follows the same county valuation-based fee table used for all trades
  • Work must be performed by, or under, a Natrona County-licensed Electrical Contractor, Master, Journeyman, or Apprentice electrician (license classes verified via the county's Electrical Contractor License Fee Schedule) Contractor
  • Governed by the 2023 National Electrical Code (NEC/NFPA 70) as adopted by county resolution

Required documents

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Fee schedule

Electrical Permit Fee — valuation-based (same table as building permits)Natrona County Permit Fees, Resolution No. 45-20 — electrical permits are NOT charged a separate flat fee; they use the same combined valuation-based schedule as building/plumbing/mechanical permits, based on declared job valuation.
$70 (valuation $0–$2,500) up to $905 plus $9.24 per additional $1,000 over $98,000
Electrical Contractor License — InitialNatrona County Contractor Fees (Revised 02/21) — required license held by the electrician performing the work, separate from the permit fee itself
$300 (Contractor); $75 (Master); $25 (Journeyman); $3 (Apprentice)
Electrical Contractor License — Annual RenewalDue by December 31 each year; renewal after February 1 requires paying the initial fee again
$75 (Contractor); $37.50 (Master); $15 (Journeyman); $3 (Apprentice)

Review timeline

Plan reviewTypical estimate — confirm current times with the Unincorporated Natrona County building department
~3–10 business days

How long did your Electrical Permit permit actually take in Unincorporated Natrona County?

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

Inspection process

  1. 1

    Rough-In

    Wiring, conduit, and box placement before walls are closed

  2. 2

    Final

    All devices installed, panel labeled, system energized and inspected by the county Building Department

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

Tips

  • Confirm your electrician holds a current Natrona County electrical license (Contractor/Master/Journeyman/Apprentice, or Low Voltage/Limited class) — Natrona County runs its OWN electrical licensing program separate from the Wyoming State Fire Marshal's statewide program used by most other unincorporated WY counties.
  • This differs from many other Wyoming counties (e.g. unincorporated Albany, Sweetwater, Sheridan, Uinta, Fremont) where electrical is handled by the state — in Natrona County, always use the COUNTY'S OWN application and licensing, not wsfm.wyo.gov.
  • Solar/PV installation is a listed 'Nature of Project' option directly on the electrical permit application — no separate standalone solar electrical form exists; use this Electrical Permit Application for the electrical interconnection portion of a solar project.
  • 2026-07-17 re-verification: county resolution primary source confirmed — Resolution No. 23-24 ("A RESOLUTION ADOPTING THE NATIONAL ELECTRICAL CODE, 2023 EDITION AS MODIFIED... AND REPEALING RESOLUTION 44-20"), recorded by the Natrona County Clerk 4/4/2024 (Doc. #1152904); the county's own live Adopted Building Codes webpage (natronacounty-wy.gov/339/Adopted-Building-Codes) still lists this same 2023 NEC resolution as current, with no superseding resolution. The Wyoming State Fire Marshal's statewide move to the 2026 NEC (effective 2026-07-01) does not reach unincorporated Natrona County because electrical is enforced locally here (WSFM chart: ELEC INSP/PR = L/L).

Frequently asked questions

Unincorporated Natrona County requires an electrical permit for: Electrical Permit Application submitted to the Natrona County Building Department (in person, mail, or online via ViewPointCloud); Specify nature of building (Residential/Commercial) and nature of project (New Construction, Basement Finish, Addition, Remodel, Repair, Service New/Repair/Replacement, Backup Generator, Solar/PV Installation); Service Type (New/Existing/Temporary) with Amps and Volts must be specified; Job valuation must be declared — fee follows the same county valuation-based fee table used for all trades; Work must be performed by, or under, a Natrona County-licensed Electrical Contractor, Master, Journeyman, or Apprentice electrician (license classes verified via the county's Electrical Contractor License Fee Schedule); Governed by the 2023 National Electrical Code (NEC/NFPA 70) as adopted by county resolution. If your project isn't listed, confirm with Natrona County Building Department at (307) 235-9435 before starting work.

Electrical permits use the same combined valuation-based fee table as building permits (Resolution No. 45-20): $70 for work valued $0–$2,500, scaling up to $905 plus $9.24 per additional $1,000 for work over $98,000. There is no separate flat electrical permit fee.

Plan review for an electrical permit in Unincorporated Natrona County typically runs 3–10 business days. This is an estimate, not a published figure — confirm current review times with Natrona County Building Department at (307) 235-9435.

You'll need: Natrona County Electrical Permit Application (2025). See the required-documents checklist on this page for details on each.

Unincorporated Natrona County requires 2 inspection(s) for an electrical permit, in order: Rough-In, Final. Schedule each through Natrona County Building Department ((307) 235-9435).

Apply through Natrona County Building Department at 200 N. Center St, Room 205, Casper, WY 82601. Phone: (307) 235-9435, email: Contact via natronacounty-wy.gov (email obfuscated on site; call 307-235-9435). Office hours: Monday–Friday, 8:00 AM–5:00 PM. Official information: https://www.natronacounty-wy.gov/170/Building-Inspection.

Unincorporated Natrona County, Wyoming has adopted: 2024 International Building Code (IBC) — adopted by Resolution 84-24; 2024 International Residential Code (IRC) — adopted by Resolution 90-24; 2024 International Existing Building Code (IEBC) — adopted by Resolution 85-24; 2024 International Fire Code (IFC) — adopted by Resolution 86-24; 2024 International Fuel Gas Code (IFGC) — adopted by Resolution 87-24; 2024 International Mechanical Code (IMC) — adopted by Resolution 88-24; 2024 International Plumbing Code (IPC) — adopted by Resolution 89-24; 2023 National Electrical Code (NEC / NFPA 70) — adopted by county resolution. Local amendments apply — see the Unincorporated Natrona County overview page for the full list.

The Natrona County Building Department issues and inspects its own electrical permits under the adopted 2023 NEC — confirmed by the Wyoming State Fire Marshal's 'Local and State Jurisdictions' chart, which lists Natrona County as 'L/L' (local) for both Building and Electrical inspection/plan-review. This is NOT the state electrical program used in some other Wyoming counties.

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

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Electrical Permit in other cities

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