You are viewing the permanent link for the record currently in effect, published 2026-07-01.
Unincorporated Natrona County building permits
VerifiedUnincorporated Natrona County, Wyoming — as published 2026-07-01.
Verified 2026-07-01 · Source
Codes adopted
2024 International Building Code (IBC) — adopted by Resolution 84-242024 International Residential Code (IRC) — adopted by Resolution 90-242024 International Existing Building Code (IEBC) — adopted by Resolution 85-242024 International Fire Code (IFC) — adopted by Resolution 86-242024 International Fuel Gas Code (IFGC) — adopted by Resolution 87-242024 International Mechanical Code (IMC) — adopted by Resolution 88-242024 International Plumbing Code (IPC) — adopted by Resolution 89-242023 National Electrical Code (NEC / NFPA 70) — adopted by county resolution
Permit types & fees
Residential Building Permit (New Construction)
VerifiedRequired for new single-family dwellings and other new one- and two-family residential construction in unincorporated Natrona County. Reviewed under the 2024 IRC as adopted by the Natrona County Building Department (Resolution 90-24).
Verified 2026-07-01 · Source
Requirements
- Building permit application (Residential or Commercial) submitted to the Natrona County Building Department, in person, by mail, or online via ViewPointCloud
- Specify building type (Single Family Dwelling, Multifamily, IRC/Manufactured, HUD/Mobile Home, Commercial/Industrial), construction type (Concrete/Block, Steel, Heavy Timber, Stick Frame, Post Frame/Pole Barn), and foundation type (Crawl Space, Basement, Caissons/Piers, Concrete Slab, Shallow Monolithic)
- Water and sewer source must be identified (Public/Septic, Public/Well) — septic requires coordination with Casper-Natrona County Health Department
- Job/market valuation of work must be declared on the application — this determines the permit fee under the county's valuation-based fee table
- Contractor performing work must hold a current Natrona County contractor license (Class I, II, or III General Contractor) with active insurance on file; permits will not be approved if the contractor's license or insurance has expired
- Applicant acknowledges compliance with all Natrona County adopted Building Codes and State laws, and that the building does not violate any restrictive covenant
Required documents
- RequiredNatrona County Building Permit Application (Residential or Commercial, 2025 form)Single combined form for residential and commercial new construction, remodel, addition, and repair; requires property owner/applicant/contractor info, building/construction/foundation type, bedroom/bathroom count, sewer/water type, dimensions, and job valuation
- RequiredSite Plan Application (2025)Site plan showing property lines, setbacks, and proposed structure location, required per Natrona Next Zoning Resolution dimensional standards for the applicable zoning district
- OptionalAddress Request Form (if address not yet assigned)Required if the parcel does not yet have an assigned situs address; permit application requires either an address or parcel number and legal description
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Building Permit Fee — valuation $0–$2,500 | $70 | Natrona County Permit Fees, Resolution No. 45-20 (effective January 2024–current) |
| Building Permit Fee — valuation $2,501–$5,000 | $100 | — |
| Building Permit Fee — valuation $5,001–$7,500 | $170 | — |
| Building Permit Fee — valuation $7,501–$12,500 | $233 | — |
| Building Permit Fee — valuation $12,501–$17,500 | $294 | — |
| Building Permit Fee — valuation $17,501–$22,500 | $356 | — |
| Building Permit Fee — valuation $47,501–$52,500 | $627 | Table continues in $5,000 valuation bands from $22,500 up to $98,000 — see full Resolution 45-20 table for all bands |
| Building Permit Fee — valuation $92,501–$98,000 | $905 | — |
| Building Permit Fee — valuation over $98,000 | $905 plus $9.24 for each additional $1,000 or fraction thereof | — |
| Work done without an approved permit | Tripled original permit fee | Emergencies as defined in the adopted codes are exempt from the triple-fee penalty |
Residential Addition / Remodel Permit
VerifiedRequired for additions, remodels, basement finishes, and repairs to existing one- and two-family dwellings in unincorporated Natrona County. Uses the same combined Building Permit Application as new construction (select 'Remodel,' 'Addition,' or 'Repair' as Type of Work).
Verified 2026-07-01 · Source
Requirements
- Same Building Permit Application form as new construction; select Type of Work: Remodel, Addition, or Repair
- Declare whether work has already commenced (application asks 'Has work commenced on this project? Yes/No')
- Existing and proposed bedroom/bathroom counts must be listed for additions/remodels affecting habitable space
- Job valuation must be declared — fee is set by the same valuation-based table used for new construction
- Licensed, currently-insured Natrona County contractor required unless the property owner is performing the work themselves
Required documents
- RequiredNatrona County Building Permit Application (Residential or Commercial, 2025 form)Same combined application form used for all building permit work types
- RequiredSite Plan Application (2025)Required for additions that change the building footprint or setbacks
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Building Permit Fee — valuation-based (same table as new construction) | $70 (valuation $0–$2,500) up to $905 plus $9.24 per additional $1,000 over $98,000 | Natrona County Permit Fees, Resolution No. 45-20 — remodels/additions/repairs use the identical valuation-based schedule as new construction; no separate remodel fee line exists. |
| Compliance Inspection (if construction started without a permit) | $150 residential / $300 commercial | Resolution No. 45-20; also see Compliance Inspection Application form |
Electrical Permit
VerifiedRequired 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
Requirements
- 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
Required documents
- RequiredNatrona County Electrical Permit Application (2025)Application form for all electrical work — new construction, service changes, generators, solar/PV interconnection
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Electrical Permit Fee — valuation-based (same table as building permits) | $70 (valuation $0–$2,500) up to $905 plus $9.24 per additional $1,000 over $98,000 | 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. |
| Electrical Contractor License — Initial | $300 (Contractor); $75 (Master); $25 (Journeyman); $3 (Apprentice) | Natrona County Contractor Fees (Revised 02/21) — required license held by the electrician performing the work, separate from the permit fee itself |
| Electrical Contractor License — Annual Renewal | $75 (Contractor); $37.50 (Master); $15 (Journeyman); $3 (Apprentice) | Due by December 31 each year; renewal after February 1 requires paying the initial fee again |
Plumbing Permit
VerifiedRequired for plumbing installations, gas line work, and septic-connected plumbing in unincorporated Natrona County. Governed by the 2024 International Plumbing Code (IPC) as adopted by Resolution 89-24, and the 2024 International Fuel Gas Code for gas piping.
Verified 2026-07-01 · Source
Requirements
- Plumbing Permit Application submitted to the Natrona County Building Department
- Specify whether the work is a gas-line-only install/repair
- Water source (Public/Well) and sewer type (Public/Septic) with providers must be identified; septic system status (new install vs. existing) must be disclosed
- Nature of Project options: New Construction, Basement Finish, Addition, Remodel, Repair
- Commercial kitchen disclosure required if applicable; yard hydrant installations must be disclosed with hydrant type
- Fuel type must be specified (Natural Gas, Liquid Propane Gas, Other) for gas piping work
- Work must be performed by a Natrona County-licensed Plumbing Contractor, Master, Journeyman, or Apprentice (or Gas Fitter/Boiler Operator as applicable)
Required documents
- RequiredNatrona County Plumbing Permit Application (2025)Covers new plumbing, gas line work, water/sewer connections, and septic-related plumbing
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Plumbing Permit Fee — valuation-based (same table as building permits) | $70 (valuation $0–$2,500) up to $905 plus $9.24 per additional $1,000 over $98,000 | Natrona County Permit Fees, Resolution No. 45-20 — plumbing has no separate flat fee; charged under the same combined valuation-based schedule as building/electrical/mechanical. |
| Plumbing Contractor License — Initial | $300 (Contractor); $75 (Master); $25 (Journeyman); $3 (Apprentice); $20 (High Pressure Boiler Operator); $10 (Low Pressure Boiler Operator / Gas Fitter) | Natrona County Contractor Fees (Revised 02/21) |
| Plumbing Contractor License — Annual Renewal | $75 (Contractor); $37.50 (Master); $15 (Journeyman); $3 (Apprentice); $10 (High Pressure Boiler Operator); $5 (Low Pressure Boiler Operator / Gas Fitter) | — |
Mechanical / HVAC Permit
VerifiedRequired for heating, cooling, and fuel-gas appliance installations in unincorporated Natrona County. Governed by the 2024 International Mechanical Code (IMC, Resolution 88-24) and 2024 International Fuel Gas Code (IFGC, Resolution 87-24).
Verified 2026-07-01 · Source
Requirements
- Mechanical Permit Application submitted to the Natrona County Building Department
- Specify Applicant Type (Owner/Contractor) and fuel type (Natural Gas, Liquid Propane Gas, Other)
- Disclose whether work is being done on Casper/Natrona County Airport property (special jurisdiction flag on the form)
- Nature of Project: New Construction, Basement Finish, New Installation, or Replacement
- Quantity and type of appliance must be listed: A/C (tonnage), mini-split (tonnage), boiler (BTU), refrigeration units (tonnage), furnace (BTU), pellet stove, wood stove, gas fireplace (BTU), unit heaters (BTU), infrared/tube heat (BTU), commercial air handler (CFM), wall heater (BTU), residential/commercial clothes dryers, evaporative cooler
- Job valuation must be declared for fee calculation
Required documents
- RequiredNatrona County Mechanical Permit Application (2025)Covers HVAC equipment installation/replacement and fuel-gas appliances
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Mechanical Permit Fee — valuation-based (same table as building permits) | $70 (valuation $0–$2,500) up to $905 plus $9.24 per additional $1,000 over $98,000 | Natrona County Permit Fees, Resolution No. 45-20 — mechanical/HVAC has no separate flat fee; uses the same combined valuation-based schedule. |
| Mechanical Contractor License — Initial | $300 (Contractor); $75 (Master); $25 (Journeyman); $3 (Apprentice) | Natrona County Contractor Fees (Revised 02/21) |
| Mechanical Contractor License — Annual Renewal | $75 (Contractor); $37.50 (Master); $15 (Journeyman); $3 (Apprentice) | — |
Roofing Permit (Reroof)
VerifiedRequired for roof replacement (tear-off and reroof) on residential and commercial buildings in unincorporated Natrona County. The Building Department does not perform underlayment/decking inspections — the owner/contractor must photo-document decking and underlayment before requesting final inspection.
Verified 2026-07-01 · Source
Requirements
- Roofing Permit Application submitted to the Natrona County Building Department
- Specify roof material (Metal, Asphalt, Membrane, Other), number of squares, and use of building (Commercial/Residential)
- Disclose whether existing roofing material is being removed and whether the new roof is going over the existing roof (recover vs. tear-off)
- Owner/contractor must provide photos of decking and underlayment BEFORE requesting final inspection — the county does not send an inspector for this step
- Job valuation must be declared for fee calculation
- Work must be performed by a Natrona County-licensed Roof contractor (license class 'Roof' under Miscellaneous licensing)
Required documents
- RequiredNatrona County Roofing Permit Application (2025)Covers tear-off and recover reroofing for residential and commercial buildings
- RequiredDecking/Underlayment PhotosOwner/contractor-supplied photo documentation of the decking and underlayment condition, required before the final inspection can be requested (the county does not inspect this step directly)
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Roofing Permit Fee — valuation-based (same table as building permits) | $70 (valuation $0–$2,500) up to $905 plus $9.24 per additional $1,000 over $98,000 | Natrona County Permit Fees, Resolution No. 45-20 — roofing has no separate flat fee; uses the same combined valuation-based schedule. |
| Roof Contractor License — Initial | $150 | Natrona County Contractor Fees (Revised 02/21), 'Miscellaneous' license category |
| Roof Contractor License — Annual Renewal | $75 | — |
Solar PV Permit
VerifiedRequired for rooftop or ground-mounted residential/accessory solar photovoltaic (PV) installations in unincorporated Natrona County. Classified in the Natrona Next Zoning Resolution as a 'Solar Generator, Accessory' (Section 4.10.13) — a use PERMITTED (P) by-right in every zoning district in the county. The electrical interconnection portion is processed on the county's standard Electrical Permit Application ('Solar/PV Installation' is a listed Nature of Project option).
Verified 2026-07-01 · Source
Requirements
- Zoning: Accessory solar generators are a permitted (by-right) accessory use in ALL zoning districts per Natrona Next Zoning Resolution § 4.10.13 — no special use / conditional use permit needed for a single-property system serving up to that property
- Ground-mounted systems: must meet the applicable zoning district's minimum accessory-structure setback (or principal-structure setback if no accessory setback is specified)
- Ground-mounted systems: maximum height 25 feet
- Ground-mounted systems within 300 ft of an abutting ground-floor residential use require a Type A landscape buffer (per Zoning Resolution § 3.03 Buffering and Screening)
- All ground-mounted panels/equipment (except utility connection fencing/poles/wires) must be enclosed by a fence at least 6 ft high, with clearly visible voltage-hazard warning signs and wildlife-fencing style options
- Community/shared ground-mounted generators serving up to 10 property owners require a Special Use Permit from Natrona County Planning
- Electrical interconnection requires a county Electrical Permit — select 'Solar/PV Installation' as the Nature of Project
- Decommissioning: any accessory solar generator no longer producing energy or abandoned must be physically removed (all panels, structures, equipment) within 150 days of discontinued operation
Required documents
- RequiredNatrona County Electrical Permit Application (2025)Used for the electrical/interconnection portion of the solar installation — select 'Solar/PV Installation'
- OptionalSite Plan Application (2025)Required for ground-mounted systems to confirm setback and buffer compliance with Zoning Resolution § 4.10.13
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Electrical Permit Fee — valuation-based (same table as building permits) | $70 (valuation $0–$2,500) up to $905 plus $9.24 per additional $1,000 over $98,000 | Natrona County Permit Fees, Resolution No. 45-20 — solar interconnection is processed as an electrical permit under the same combined valuation-based schedule; no dedicated solar fee line exists. |
Accessory Dwelling Unit (ADU) Permit
VerifiedRequired for construction of an ADU on a residential property in unincorporated Natrona County. ADUs are expressly defined and regulated as a Permitted (P) accessory use in the Urban Agricultural (UA), Mountain Residential 1 & 2 (MR-1/MR-2), Suburban Residential (SR), Rural Residential (RR), and Urban Residential (UR) zoning districts under the Natrona Next Zoning Resolution § 4.11.05(A). Built under the standard county Building Permit process once zoning standards are confirmed with Planning.
Verified 2026-07-01 · Source
Requirements
- Zoning eligibility: ADU must be an accessory use to a legally permitted single-unit residential use in a district where ADUs are listed as Permitted (Table 4.02, districts include UA, MR-1, MR-2, SR, RR, UR) — confirm with Natrona County Planning Department before applying for the building permit
- Number: One (1) ADU permitted per lot as accessory to a legally permitted single-unit residential use; in the UR district, the lot must be a minimum of 2 acres
- Density in agricultural/mountain districts is expressed per-acre: e.g. UA and MR-1 allow 1 ADU per 10 acres (1 exempt ADU for agricultural-tax-status properties per 10 acres); MR-2 allows 1 ADU per 5 acres; SR and RR allow 1 ADU per lot
- Setbacks: a detached ADU must comply with the zoning district's required (principal or accessory, as applicable) setbacks; an attached ADU must comply with principal building setbacks for its district
- Height: an ADU must NOT exceed the height of the primary dwelling
- Size: an ADU must not exceed 50% of the primary dwelling's square footage OR 1,000 gross square feet of habitable floor area, whichever is SMALLER
- Occupancy: the property owner (title holder or contract purchaser) must occupy the principal dwelling as their permanent residence — owner-occupancy of the primary unit is mandatory
- Use restriction: ADUs may not be sold separately from the primary residence, and must maintain architectural consistency with the primary dwelling
- Once zoning compliance is confirmed, the ADU is built under the standard Natrona County Building Permit Application (select New Construction or Addition, per whether attached or detached) — plus separate Electrical, Plumbing, and Mechanical permits as applicable
Required documents
- RequiredNatrona County Building Permit Application (2025)Standard application; ADUs are built under this same form once zoning is confirmed — select 'New Construction' for a detached ADU or 'Addition' for an attached one
- RequiredSite Plan Application (2025)Required to confirm setback compliance and ADU placement on the lot relative to the primary dwelling
- OptionalNatrona Next Zoning Resolution — § 4.11.05(A)Governing ADU standard (definition, number, setbacks, height, size, occupancy, use restrictions); consult Natrona County Planning Department to confirm district-specific eligibility before applying
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Building Permit Fee — valuation-based (same table as new construction) | $70 (valuation $0–$2,500) up to $905 plus $9.24 per additional $1,000 over $98,000 | Natrona County Permit Fees, Resolution No. 45-20 — an ADU is charged under the same combined valuation-based building-permit fee schedule as any other new residential construction; no separate ADU fee line exists. |
Demolition Permit
VerifiedRequired for demolition of structures in unincorporated Natrona County. Uses the standard Building Permit Application process; charged a dedicated flat demolition fee (distinct from the general valuation table) per the county's adopted fee resolution.
Verified 2026-07-01 · Source
Requirements
- Submit a Building Permit Application to the Natrona County Building Department describing the demolition scope
- Disclose property owner, contractor (must hold a current Natrona County Demolition contractor license), and site address/parcel information
- Coordinate utility disconnects and any required Wyoming DEQ asbestos abatement documentation prior to demolition (DEQ asbestos program linked from the county's Adopted Building Codes quick-links)
- Demolition contractor must hold a current Natrona County Demolition license
Required documents
- RequiredNatrona County Building Permit Application (2025)Used for demolition permit applications — describe scope of work as demolition
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Demolition Permit — Residential | $75 | Natrona County Permit Fees, Resolution No. 45-20 — flat fee, separate from the general valuation table |
| Demolition Permit — Commercial | $150 | Natrona County Permit Fees, Resolution No. 45-20 — flat fee |
| Demolition Contractor License — Initial | $150 | Natrona County Contractor Fees (Revised 02/21) |
| Demolition Contractor License — Annual Renewal | $75 | — |
Commercial Tenant Improvement Permit
VerifiedRequired for interior alterations, remodels, or repairs to existing commercial/industrial buildings in unincorporated Natrona County. Uses the same combined Building Permit Application (select Building Use: Commercial; Type of Work: Remodel or Repair), reviewed under the 2024 IBC and IEBC as adopted.
Verified 2026-07-01 · Source
Requirements
- Same Natrona County Building Permit Application as residential work; select Building Use = Commercial and the applicable Type of Work (Remodel, Addition, Repair)
- Building Type on the application should reflect Commercial/Industrial
- Job valuation of the tenant improvement work must be declared for fee calculation
- Reviewed under the 2024 International Building Code (IBC, Resolution 84-24) and 2024 International Existing Building Code (IEBC, Resolution 85-24) for alterations to existing structures
- Separate Electrical, Plumbing, and Mechanical permits required for any trade work within the tenant space
- Contractor must hold the applicable current Natrona County contractor license (General Contractor Class I/II/III depending on project scope) with active insurance
Required documents
- RequiredNatrona County Building Permit Application (2025)Same combined form; mark Building Use = Commercial
- OptionalSite Plan Application (2025)May be required if the tenant improvement affects parking, access, or the building footprint
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Building Permit Fee — valuation-based (same table as all building permits) | $70 (valuation $0–$2,500) up to $905 plus $9.24 per additional $1,000 over $98,000 | Natrona County Permit Fees, Resolution No. 45-20 — commercial tenant improvements use the identical valuation-based schedule as residential work; no separate commercial fee table exists. |
| Compliance Inspection — Commercial | $300 | Applies if work commenced before permit approval |
Deck Permit
VerifiedRequired for construction of a new deck attached to a residential dwelling in unincorporated Natrona County. Processed under the standard Building Permit Application (Type of Work: Addition) and reviewed under the 2024 IRC; must comply with the accessory/principal structure setbacks of the applicable zoning district.
Verified 2026-07-01 · Source
Requirements
- Natrona County Building Permit Application submitted; select Type of Work: Addition
- Deck must comply with the applicable zoning district's building setbacks — for districts with a distinct accessory-structure setback (e.g. Suburban Residential: 5 ft side/front, 8 ft rear; Rural Residential: 5 ft side/front, 8 ft rear), attached decks generally follow principal-structure setbacks unless the district specifies otherwise
- Job valuation of deck construction must be declared for fee calculation
- Structural details (footings, ledger attachment, joist/beam sizing) reviewed under the 2024 IRC deck provisions
- Contractor must hold a current Natrona County General Contractor license if not owner-built
Required documents
- RequiredNatrona County Building Permit Application (2025)Standard form; select Addition as Type of Work for a deck
- RequiredSite Plan Application (2025)Shows deck location relative to property lines and setbacks
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Building Permit Fee — valuation-based (same table as all building permits) | $70 (valuation $0–$2,500) up to $905 plus $9.24 per additional $1,000 over $98,000 | Natrona County Permit Fees, Resolution No. 45-20 — decks have no dedicated flat fee; charged under the general valuation-based building-permit fee schedule based on declared construction cost. |
EV Charger / EVSE Permit
VerifiedNatrona County does not publish a distinct EV charger/EVSE fee line. Installing electric vehicle charging equipment requires a standard Electrical Permit from the Natrona County Building Department under the adopted 2023 NEC (which includes Article 625, Electric Vehicle Power Transfer System), billed under the same combined valuation-based fee table used for all electrical, building, plumbing, and mechanical permits (Resolution No. 45-20) — there is no separate flat electrical-permit fee. Work must be performed by, or under, a Natrona County-licensed Electrical Contractor, Master, Journeyman, or Apprentice electrician, since the county runs its own local electrical licensing program rather than using the Wyoming State Fire Marshal's statewide program.
Verified 2026-07-20 · Source
Requirements
- Electrical Permit Application submitted to the Natrona County Building Department (in person, mail, or online via ViewPointCloud) for EV charger/EVSE circuit installation
- Specify nature of building (Residential/Commercial), nature of project, and Service Type (New/Existing/Temporary) with Amps and Volts
- 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
- Governed by the adopted 2023 National Electrical Code (NEC/NFPA 70), which includes Article 625 (Electric Vehicle Power Transfer System)
- No distinct EV charger/EVSE fee line, expedited timeline, or SolarAPP+-style instant-permitting platform was found published by the county as of this review
Required documents
- RequiredNatrona County Electrical Permit Application (2025)Application form for all electrical work, including EV charger/EVSE circuit installation
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Electrical Permit Fee — valuation-based (same table as building permits) | $70 (valuation $0-$2,500) up to $905 plus $9.24 per additional $1,000 over $98,000 | Natrona County Permit Fees, Resolution No. 45-20 — same combined valuation-based schedule documented on this jurisdiction's Electrical Permit entry; no distinct EV charger/EVSE fee line is published. |
Sign Permit
VerifiedRequired 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
Requirements
- 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
- RequiredNatrona County Building Sign Permit Application (2025)Building Department form covering sign type, dimensions, electrical service, and job valuation
- OptionalScale drawing of proposed signRequired per Zoning Resolution § 3.08(K) for any sign exceeding 120 sf in area, showing height, size, and location on the building, tract, or lot, and describing existing signage on the premises; freestanding signs over 120 sf also require wind/snow load engineering specs
- OptionalProperty owner authorization letter (billboards only)Required for billboard/off-premise sign permits: a letter from the property owner granting permission and acknowledging the restrictions the billboard imposes on the property
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Sign Permit Fee (Building Department) — valuation-based (same table as all building permits) | $70 (valuation $0–$2,500) up to $905 plus $9.24 per additional $1,000 over $98,000 | 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. |
| Zoning Sign Permit review fee (Planning Department) | Not published | 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). |
Fire Alarm System Permit
VerifiedConstruction permit required from the Natrona County Fire Protection District (NCFPD) Office of the Fire Marshal before installing or modifying a fire alarm system in unincorporated Natrona County, under the adopted 2024 International Fire Code § 105.6 and NFPA 72 (2025 edition). Processed separately from the county Building Department's building/electrical permits, through the district's own NCFPDpermits.com web portal.
Verified 2026-07-22 · Source
Requirements
- Submit a Construction Permit application through the NCFPDpermits.com web portal to the NCFPD Office of the Fire Marshal before installing or modifying a fire alarm system, per adopted 2024 International Fire Code § 105.6
- Plans must be submitted for review; permit fee is based on total device count (FACP, FAAP, heat/smoke detectors, horn/strobes, beam detectors, etc.)
- Reviewed under NFPA 72 (2025 edition) as referenced by the adopted 2024 IFC
- If the installation spans multiple floors, an additional per-floor charge applies for each floor above or below the first floor
- All required inspections, including acceptance testing, must be requested in advance (24–48 hours) through the NCFPDpermits.com portal — the initial permit fee covers plan review and all required inspections
- Work started without a valid permit is subject to a doubled fee for each fire protection system installed
- Construction permits become invalid if work is not commenced within 180 days of issuance, or if work is suspended/abandoned for 180 days after commencing
Required documents
- RequiredNCFPD Fire Alarm Plan Submittal RequirementsDistrict-published checklist of plans and specifications required for fire alarm system plan review, available on NCFPDpermits.com
- RequiredFire alarm system plansEngineered plans showing device layout, panel location(s), and system design per NFPA 72
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| NEW Fire Alarm System — 1-10 devices | $200.00 | NCFPD Office of the Fire Marshal Construction Permit fee schedule, effective as of July 20, 2026; fee includes plan review and all required inspections including acceptance testing |
| NEW Fire Alarm System — 11-20 devices | $225.00 | — |
| NEW Fire Alarm System — 21-200 devices | $275.00 | — |
| NEW Fire Alarm System — 201+ devices | $375.00 | — |
| Modified Fire Alarm System — 10+ devices and/or FACP replacement | $175.00 | — |
| Additional floor charge (new or modified) | $25.00 per floor above or below the first floor | — |
| Work started without a valid permit | Doubled fee for each fire protection system installed | NCFPD Construction Permit fee schedule |
Fire Sprinkler System Permit
VerifiedConstruction permit required from the Natrona County Fire Protection District (NCFPD) Office of the Fire Marshal before installing or modifying a fire sprinkler system in unincorporated Natrona County, under the adopted 2024 International Fire Code § 105.6 and NFPA 13/13R/13D (2025 edition). Processed separately from the county Building Department's building/plumbing permits, through the district's own NCFPDpermits.com web portal.
Verified 2026-07-22 · Source
Requirements
- Submit a Construction Permit application through the NCFPDpermits.com web portal to the NCFPD Office of the Fire Marshal before installing or modifying a fire sprinkler system, per adopted 2024 International Fire Code § 105.6
- Permit fee is based on total sprinkler head count for the system being installed or modified
- Reviewed under NFPA 13/13R/13D (2025 edition) as referenced by the adopted 2024 IFC
- Fire standpipes ($25 per outlet) and fire pumps ($150 per pump) are billed as additional fees alongside the initial sprinkler permit if included in the project
- If the installation spans multiple floors, an additional per-floor charge applies for each floor above or below the first floor
- All required inspections, including acceptance testing, must be requested in advance (24–48 hours) through the NCFPDpermits.com portal — the initial permit fee covers plan review and all required inspections
- Work started without a valid permit is subject to a doubled fee for each fire protection system installed
- Construction permits become invalid if work is not commenced within 180 days of issuance, or if work is suspended/abandoned for 180 days after commencing
Required documents
- RequiredNCFPD Fire Sprinkler Submittal RequirementsDistrict-published checklist of plans and specifications required for fire sprinkler system plan review, available on NCFPDpermits.com
- RequiredFire sprinkler system plansEngineered hydraulic calculations and layout plans per NFPA 13/13R/13D
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| NEW Fire Sprinkler System — 1-10 heads | $425.00 | NCFPD Office of the Fire Marshal Construction Permit fee schedule, effective as of July 20, 2026; fee includes plan review and all required inspections including acceptance testing |
| NEW Fire Sprinkler System — 11-20 heads | $450.00 | — |
| NEW Fire Sprinkler System — 21-200 heads | $500.00 | — |
| NEW Fire Sprinkler System — 201+ heads | $600.00 | — |
| Modified Fire Sprinkler System — 20+ heads | $225.00 | — |
| Additional floor charge (new or modified) | $25.00 per floor above or below the first floor | — |
| Fire Standpipe | $25.00 per outlet | Additional fee alongside the initial sprinkler permit |
| Fire Pump | $150.00 per pump | Additional fee alongside the initial sprinkler permit |
| Work started without a valid permit | Doubled fee for each fire protection system installed | — |
Change of Use / Zoning Certificate & Certificate of Occupancy
VerifiedNatrona County does not issue a standalone 'change of use permit' product; a change of use of any building or land area is regulated through the Zoning Certificate process (Zoning Resolution § 5.12), administered by the Natrona County Planning Department, and closed out with a Certificate of Occupancy (C.O.) issued by the Building Department once the Building Official finds the completed work free of code violations.
Verified 2026-07-22 · Source
Requirements
- A Zoning Certificate must be obtained from the Applicable Director (Planning Department) before any building, structure, or manufactured home is commenced, erected, or altered, and before any building, electrical, or plumbing permit is issued, per Zoning Resolution § 5.12(B)
- Any future modification of an existing building, OR any change of use of a building or land area, requires a subsequent Zoning Certificate approval per § 5.12(E) — this is the county's mechanism for regulating change-of-use
- Exemptions from the Zoning Certificate requirement: accessory structures under 225 sf that are not on a permanent foundation and not attached to a building with a permitted use (§ 5.12(B)(1)); and internal renovations that do NOT change the use of the building (§ 5.12(B)(2))
- Zoning Certificate approval criteria: compliance with Chapter 4 use-specific standards and the applicable zoning district, the Natrona County Subdivision Resolution, and Casper/Natrona County Health Department Rules and Regulations
- A Zoning Certificate becomes void one year after issuance unless the associated use is established — established by a Building Permit having been issued and construction diligently pursued, a Certificate of Occupancy having been issued, the use physically established with supporting records, or the Zoning Certificate being renewed (§ 5.12(F))
- To close out a building permit and obtain a Certificate of Occupancy, request it from the Building Official with seven business days' advance notice; the project must be fully completed per approved plans (structural, electrical, plumbing, mechanical) and the Building Official must find no violations of the adopted codes or other laws enforced by the Development Department
Required documents
- RequiredZoning Certificate ApplicationApplication to the Natrona County Planning Department certifying that a proposed building, structure, manufactured home, or change of use complies with the Zoning Resolution; reviewed per the general application procedure in § 5.03 (completeness review, application review, decision)
- OptionalNatrona County Building Permit Application (2025)Required alongside or following the Zoning Certificate if the change of use involves construction, alteration, or trade work; also the vehicle through which a Certificate of Occupancy is ultimately requested
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Zoning Certificate application fee | Not published | Zoning Resolution § 5.19 states the Board of County Commissioners establishes application fees per an adopted fee schedule, but no distinct published dollar figure specific to a Zoning Certificate was located as of this review; Natrona County Permit Fees Resolution No. 45-20 covers Building/Electrical/Plumbing/Mechanical construction permits only, not zoning applications. Confirm current fee with Natrona County Planning (307-235-9447). |
| Certificate of Occupancy | No separate fee identified | The C.O. closes out an already-permitted building permit; the county's FAQ and Resolution No. 45-20 fee schedule do not list a distinct C.O. issuance fee separate from the underlying building permit fee already paid. |
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.