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Sign Permit in Unincorporated Natrona County, Wyoming

Required for installation, replacement, or alteration of any building or freestanding sign in unincorporated Natrona County, unless specifically exempted. Reviewed jointly: the Natrona County Building Department processes the physical Sign Permit application (form-based, same combined valuation-based fee table as other trade permits), while the Natrona County Planning Department separately certifies zoning compliance under Zoning Resolution § 5.13 Sign Permit, applying the sign standards of § 3.08 Signs (size, height, setback, and district-based cumulative area limits).

Verified 2026-07-22 · Source

When you need this permit

  • Natrona County Building Sign Permit application submitted to the Building Department, specifying whether the sign is New, Replacement, or Repair
  • Type of sign identified: Building Sign, Free Standing Sign, Billboard, Roof, Canopy, Projecting, or Other, plus whether the sign has electrical service
  • Sign dimensions (width, length, height) and mounting height (distance from ground to top and bottom of sign) must be provided
  • Job valuation of the sign work must be declared for fee calculation under the county's combined valuation-based fee table
  • Sign must comply with Zoning Resolution § 3.08 Signs: freestanding/pole signs are limited to 40 ft in height and 100 sf in area per lot (one per lot, or a second up to 50 sf if the lot fronts two public streets, with 150 ft spacing from other freestanding signs), and total cumulative sign area is capped per the district-based Table 3.08-1 (based on lot road frontage and zoning district: RAM/UA, MR-1/MR-2/RR/SR/UR/UMR/MH, or C/LI/HI)
  • Certain sign types are exempt from the Sign Permit requirement per § 3.08(B)(2), including government signs, one wall sign up to 16 sf, cornerstones, historical markers, window displays of actual merchandise, and specified temporary signs — confirm exemption eligibility with the Planning Department before assuming a permit is not needed
  • Billboards (off-premise signs) require a Sign Permit issued by the Planning Department, are only allowed in the RAM, UA, C, LI, and HI zoning districts, must not exceed 680 sf (over 480 sf requires a Conditional Use Permit in C/LI/HI), may not exceed 50 ft in height, and require a landowner-authorization letter
  • Electrical work for an illuminated sign requires coordination with the county's Electrical Permit process in addition to the Sign Permit

Required documents

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Fee schedule

Sign Permit Fee (Building Department) — valuation-based (same table as all building permits)Natrona County Permit Fees, Resolution No. 45-20 — the Sign Permit application has no distinct flat fee line; charged under the same combined valuation-based schedule used for building/electrical/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
Zoning Sign Permit review fee (Planning Department)Zoning Resolution § 5.19 states application fees are set by the BoCC per an adopted fee schedule, but no separate published dollar amount specific to a Zoning § 5.13 Sign Permit was located as of this review; confirm current fee with Natrona County Planning (307-235-9447).
Not published

Review timeline

Plan review
Not published — contact the department

How long did your Sign 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

    Final

    Completed sign inspected for compliance with the approved permit, dimensions, and mounting; billboards additionally verified for wind/structural standards under § 3.08(H)

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

Tips

  • Not every sign needs a permit — Zoning Resolution § 3.08(B)(2) exempts government signs, one wall sign up to 16 sf, cornerstones, historical markers, window displays of actual merchandise, and several temporary sign categories; confirm your specific sign against the exemption list before applying.
  • Freestanding/pole signs are capped at 40 ft in height and 100 sf in area per lot — a second freestanding sign (up to 50 sf) is only allowed if your lot fronts two public streets, and it must sit at least 150 ft from any other freestanding sign on the same or adjoining property.
  • Total cumulative sign area on a property is capped by Table 3.08-1 based on your lot's linear road frontage and zoning district — commercial/industrial (C, LI, HI) districts get the most generous allowance, residential/agricultural districts (RAM, UA, MR-1, MR-2, RR, SR, UR, UMR, MH) are more restrictive.
  • Billboards are a separate, more heavily regulated category: permitted only in RAM, UA, C, LI, and HI districts, capped at 680 sf and 50 ft in height, and require a landowner authorization letter plus (over 480 sf in C/LI/HI) a Conditional Use Permit.

Frequently asked questions

Most signs do. You need both a Building Sign Permit (Building Department, valuation-based fee under Resolution No. 45-20) and zoning compliance under Zoning Resolution § 5.13. A short list of sign types is exempt from the zoning permit requirement per § 3.08(B)(2), including government signs, one small wall sign (≤16 sf), and certain temporary signs — check the exemption list first.

In Unincorporated Natrona County, the published Sign Permit Fee (Building Department) — valuation-based (same table as all building permits) is: $70 (valuation $0–$2,500) up to $905 plus $9.24 per additional $1,000 over $98,000. Additional published fees: Zoning Sign Permit review fee (Planning Department) — Not published. These are the jurisdiction's own published figures — see the fee schedule table and source citations on this page.

Unincorporated Natrona County does not publish a plan-review timeline for this permit. Contact Natrona County Building Department at (307) 235-9435 for current turnaround.

You'll need: Natrona County Building Sign Permit Application (2025). Depending on your project, Unincorporated Natrona County may also ask for: Scale drawing of proposed sign; Property owner authorization letter (billboards only). See the required-documents checklist on this page for details on each.

Unincorporated Natrona County requires 1 inspection(s) for a sign permit, in order: 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.

A freestanding/pole sign may not exceed 40 ft in height or 100 sf in area (Zoning Resolution § 3.08(E)). Total cumulative sign area on a property is further capped by Table 3.08-1, based on the lot's road frontage and zoning district. Billboards have their own separate limits: 680 sf maximum area and 50 ft maximum height.

Sources & verification

Verified against official sources. Last reviewed 2026-07-22.

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.