Bolthole Index

Weston County, Wyoming

Building permits, zoning and land rules in Weston County, Wyoming

56Index Score / 100
#13 of 23 in Wyoming

Unincorporated Weston County, Wyoming does not require a general county building permit and has no county zoning, but subdivision rules and state permits still apply12. Wyoming DEQ permits septic systems in Weston County, and the State Engineer permits wells34. Certain public, commercial, assembly, fire-protection, alternative-energy and fuel-storage projects require State Fire Marshal review before work begins5.

At a glance

Building permit
No general Weston County permit; State Fire Marshal review applies to specified project categories15
Zoning
No county zoning in unincorporated Weston County; subdivision and state rules still apply2
Septic permits
Required through Wyoming DEQ for installation, repair or replacement6
Well permits
Required from the Wyoming State Engineer before drilling or spring development begins4
RV / tiny home living
County occupancy rules were not confirmed; ask the County Clerk before relying on the lack of zoning2
Minimum home size
No county zoning-based minimum in unincorporated areas; other requirements may apply7
Subdivision
Regulated unless exempt; county applications carry a $25 fee89
County-road access
Weston County Road & Bridge permits approaches in county rights-of-way10

Who to call

Also useful

Weston County Clerk (Planning Board application intake)

Intake for Weston County Planning Board applications, including subdivision applications

307 746-4744

1 West Main Street, Newcastle, Wyoming 82701

Online permits →

Roads & driveways

Weston County Road & Bridge

Permits for roadway approaches, overhead line crossings, road bores and pipelines in county rights-of-way

307-746-2642

23 County Shop Road, Newcastle, WY 82701

Contact details are copied from each office’s official page and were checked against it on September 28, 2026.

Do you need a building permit in Weston County, Wyoming?

An ordinary home on unincorporated land does not go through a general Weston County building-permit program1. That does not mean every project is permit-free: Wyoming requires State Fire Marshal plan review for listed projects, including certain public-access and multistory buildings, places of assembly, fire-protection work, alternative-energy installations and aboveground fuel facilities5. Covered work must receive a state permit to construct before it begins, followed by inspection and the applicable occupancy or compliance document51112. Wyoming has also adopted statewide building and related codes for construction subject to state enforcement13. For a house project that includes a well, septic system or county-road approach, those components each have their own permit path even though Weston County does not issue a general house permit4610.

Who handles building and land permits in Weston County?

Weston County has no general building department for an ordinary home in an unincorporated area1. The Weston County Clerk receives Planning Board applications, and subdivision applications must arrive ten business days before the meeting to make the agenda1415. Weston County Road & Bridge handles roadway approaches and related work in county rights-of-way1610. Wyoming DEQ is the permitting authority for small wastewater facilities in Weston County, while the Wyoming State Engineer handles groundwater permits34. Projects in the State Fire Marshal's listed categories go through state plan review and permitting before construction5. Ask the County Clerk which application path applies if a parcel division, incorporated municipality or unusual use is involved14.

Does Weston County have zoning?

Unincorporated Weston County has no county-administered zoning; the county says subdivision regulations are its only current local land-use regulations2. Accordingly, county zoning does not set a minimum dwelling size, minimum lot size, setback, lot-coverage limit or building-height limit in unincorporated areas717181920. Those conclusions are limited to county zoning controls; subdivision, wastewater, floodplain, state and incorporated-municipality requirements can still affect a parcel1718. Land divisions remain regulated unless an exemption applies, and the county recognizes single land division, minor subdivision, major subdivision and planned unit development paths8. A proposed subdivision improvement that encroaches on a waterway, wetland or flood plain must show that the proper permits were obtained from the governing authority21.

How do septic permits work in Weston County?

Wyoming DEQ, rather than a Weston County office, permits small wastewater facilities in Weston County3. A permit is required to install, repair or replace a small wastewater system, and construction cannot start until the permitting authority issues authorization6. The general permit covers individual or commercial systems treating less than 2,000 gallons of domestic sewage per day, and a completion certificate goes to DEQ after installation6. Conventional-system criteria require seasonal high groundwater, bedrock or impervious clay at least 4 feet below the proposed leachfield bottom and a percolation rate greater than 5 but less than 60 minutes per inch22. Only 20.1% of county soils are rated without severe limits for a conventional drain field, so make the site evaluation an early feasibility step23. We could not confirm whether DEQ requires a separate pre-cover or final field inspection; ask DEQ when it authorizes the installation.

Can you live in an RV or tiny home in Weston County?

We could not confirm a Weston County rule that affirmatively allows or prohibits living in an RV, tiny home, manufactured home or accessory dwelling on private land. The absence of county zoning in unincorporated Weston County answers zoning-based controls, but it does not settle occupancy, sanitation, state-code or municipal requirements2. Unincorporated Weston County has no zoning-based minimum dwelling size, although septic, subdivision, floodplain and state requirements may still apply7. Before buying or moving a unit onto land, ask the Weston County Clerk whether the location or proposed use triggers any Planning Board process14. Also confirm wastewater approval with Wyoming DEQ and obtain a groundwater permit before drilling a well64. State Fire Marshal plan review expressly covers site plans for RV, camping, mobile-home and similar parks or areas, so a multi-unit or park proposal is different from an unanswered single-parcel occupancy question5.

Building a home in Weston County: what are the steps?

  1. Confirm that the parcel is outside an incorporated municipality and ask the Weston County Clerk whether a land division or Planning Board application applies214.
  1. Screen the project against the State Fire Marshal's plan-review categories before design or construction begins5.
  1. Apply to Wyoming DEQ and obtain authorization before installing, repairing or replacing the septic system6.
  1. Submit the groundwater application and receive the State Engineer's approved permit before drilling a well or developing a qualifying spring4.
  1. Apply to Weston County Road & Bridge if the driveway will create an approach in a county right-of-way1610.
  1. If dividing the tract, choose the applicable subdivision path, pay the published $25 application fee and deliver the application ten business days before the Planning Board meeting8915.

What should you check before buying land in Weston County?

Start with water and wastewater feasibility: annual precipitation averages 15.7 inches, severe drought occurs in 18.2% of years, and only 20.1% of soils are rated without severe limits for a conventional drain field242523. A groundwater well needs State Engineer approval before drilling, while a septic installation needs DEQ authorization before work starts46. Check legal access and identify who owns the road, because Weston County's approach permit applies to county rights-of-way rather than every private, municipal or state road10. Review flood maps and wetlands if subdivision improvements are planned, because encroachment on a waterway, wetland or flood plain requires evidence of the proper governing-authority permits21. The county's effective property-tax rate is about 0.7%, with a median annual bill near $1,4602627. Federal land covers 20.2% of Weston County, so verify the surveyed boundary, easements and neighboring ownership on the actual parcel28.

Watch-outs

  • No general county building permit does not mean no permits: state review applies to specified projects, and septic, wells and county-road approaches have separate approvals56410.
  • We could not confirm a countywide rule for RV, tiny-home, manufactured-home or accessory-dwelling occupancy; ask the Weston County Clerk and the relevant state permitting agency before relying on the absence of zoning142.
  • The published subdivision fee schedule is labeled 2023, so confirm the current $25 amount with the County Clerk before filing914.

Sources

  1. Weston County - Planning and Zoning (2026 county census)
  2. Planning and Zoning | Weston County, quoted and re-checked
  3. Small Wastewater Systems, quoted and re-checked
  4. General Processes, quoted and re-checked
  5. Article 1 - Department of Fire Prevention and Electrical Safety, quoted and re-checked
  6. Small Wastewater Systems, quoted and re-checked
  7. Planning and Zoning | Weston County, quoted and re-checked
  8. Weston County Subdivision Rules and Regulations, amended 7-17-2012, quoted and re-checked
  9. Fees | Weston County, quoted and re-checked
  10. Road & Bridge | Weston County, quoted and re-checked
  11. Article 1 - Department of Fire Prevention and Electrical Safety, quoted and re-checked
  12. Article 1 - Department of Fire Prevention and Electrical Safety, quoted and re-checked
  13. Rules and Statutes | Wyoming State Fire Marshal, quoted and re-checked
  14. Weston County Clerk (Planning Board application intake) (westongov.com)
  15. Planning and Zoning | Weston County, quoted and re-checked
  16. Weston County Road & Bridge (westongov.com)
  17. Planning and Zoning | Weston County, quoted and re-checked
  18. Planning and Zoning | Weston County, quoted and re-checked
  19. Planning and Zoning | Weston County, quoted and re-checked
  20. Planning and Zoning | Weston County, quoted and re-checked
  21. Weston County Subdivision Rules and Regulations, quoted and re-checked
  22. Conventional Septic Systems Application Package, quoted and re-checked
  23. Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
  24. Annual precipitation: Bolthole Index county data
  25. Share of years in severe drought: Bolthole Index county data
  26. Effective property tax rate: Bolthole Index county data
  27. Median property tax bill: Bolthole Index county data
  28. Federal land share: Bolthole Index county data

Written September 28, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.

Found land here? Start a Property Hunt →

County locator

Weston County in Wyoming

56
County map
Weston County highlighted among the Wyoming counties · colored by Index score

How Weston County scores

Seclusion86100% ev.
Self-Sufficiency20100% ev.
Admin Boringness8490% ev.
Durability47100% ev.
Property Autonomy74100% ev.
Carry Cost86100% ev.

Evidence strength: 98%. This reports direct-source completeness and fallback use; it is separate from the score and is not a confidence interval. How it works →

$252kTypical home
0.7%Property tax
$953Land / acre
15.7"Annual rain
18.2% of yrsSevere drought
10 / yr (+8.4)Mid-century 100°F days
20.3 daysMid-century dry spell
0.93" (+5%)Mid-century 1-day rain
1.32×Wildfire change factor
100%Forward climate coverage
$2,043Home insurance / yr
2.7% / yrInsurance growth
1.19%Nonrenewal rate
county median (2+ published ZIPs)Insurance basis
434Radius comparison (15 mi)
2.8People / sq mi
20.2%Federal land
60.8%Land at 15% slope or less
20.1%Septic soil without severe limits
281,992 acWorkable land screen
9.1%Wooded land
12.7 tonsBiomass / forest ac
45°FAvg temp

Scout Weston County

Camp here before you commitBook a few nights nearby on Hipcamp →Already own land here?Earn money hosting campers — get $100 when you become a Hipcamp host →

Some links are affiliate or referral links — we may earn a commission, at no cost to you.

Property hunt

Find land. Bring the promising ones back.

Search live inventory elsewhere, then cost and vet each candidate here. No copied listings, account, or paid data feed.

View your full hunt →
ZillowLand & lotsRealtor.comLand listingsLandSearchRural & vacant land

Each button opens a current land search for Weston County. Listing sites control their own results and filters.

Analyze a property
Add setup-cost allowances

Use rough quotes or placeholders. Blank fields count as $0.

Working estimate

—land + entered setup costs
Asking $ / acre
—
Setup allowance
—
All-in $ / acre
—

A planning estimate, not a valuation or contractor quote. The USDA benchmark includes farm land and buildings; it is context, not a parcel comp.

Before an offer

Parcel due diligence

0/8 checked

Saved properties and checklist progress stay on this device. Bolthole Index does not receive them.

Answers from the rulebook for Weston County

What the ordinances and state agencies actually say — one answer per question, each quoted from the official source and independently re-checked.

Weston County rules

  • County-wide zoningAbsent (with conditions)

    County-administered zoning across Weston County; incorporated municipalities may administer separate municipal zoning.

    • The county page states that the county's only current local land-use regulations are subdivision regulations.
    • County subdivision regulations and applicable Wyoming state land-use rules may still apply.
    • Municipal zoning rules may apply inside incorporated municipalities.
    “With this in mind, the only local land use regulations that the county currently has are subdivision regulations.”
  • Local zoningAbsent

    County-administered local zoning in unincorporated Weston County, Wyoming.

    • The county states that its only current local land-use regulations are subdivision regulations.
    • Subdivision regulations and applicable state-agency requirements still apply.
    • This claim does not determine zoning regulations administered by incorporated municipalities within Weston County.
    “the only local land use regulations that the county currently has are subdivision regulations.”
  • Zoning districtsNot published

    County zoning districts in unincorporated Weston County.

    • The county states that its only current local land-use regulations are subdivision regulations.
    • Subdivision, floodplain, septic, road-access, municipal, state, and federal requirements may still apply.
    • This claim does not address zoning districts adopted by incorporated municipalities.
    “Weston County is in the minority when it comes to using or not using zoning as a means for resolving and managing land use matters. With this in mind, the only local land use regulations that the county currently has are subdivision regulations.”
    One more reviewed finding on this topic
    • Not published — County-administered zoning districts in unincorporated Weston County.
      “Weston County is in the minority when it comes to using or not using zoning as a means for resolving and managing land use matters. With this in mind, the only local land use regulations that the county currently has are subdivision regulations.”
  • Minimum dwelling sizeNone

    County zoning-based minimum dwelling-size requirements in unincorporated Weston County.

    • The county page states that its only current local land-use regulations are subdivision regulations; this conclusion addresses zoning-based dwelling-size controls and does not determine requirements imposed by subdivision, health, wastewater, state building, or municipal rules.
    • Incorporated municipalities may impose their own requirements.
    “the only local land use regulations that the county currently has are subdivision regulations.”
    One more reviewed finding on this topic
    • None — County zoning-based minimum dwelling-size requirements in unincorporated Weston County.
      “With this in mind, the only local land use regulations that the county currently has are subdivision regulations.”
  • Minimum lot sizeNone

    County zoning-based minimum lot-size requirements in unincorporated Weston County.

    • This absence conclusion is limited to county zoning-based controls; subdivision review requirements, statutory subdivision exemptions, wastewater/septic requirements, and incorporated-municipality rules may apply.
    • Wyoming law separately exempts certain dispositions involving parcels of 35 acres or larger, subject to access and utility easement requirements.
    “With this in mind, the only local land use regulations that the county currently has are subdivision regulations.”
  • SetbacksNone

    County zoning-based setback requirements in unincorporated Weston County.

    • The county page states that its only current local land-use regulations are subdivision regulations; this conclusion addresses zoning-based setback controls and does not determine site-design standards that may apply under subdivision regulations or other state or municipal rules.
    • Incorporated municipalities may impose their own requirements.
    “the only local land use regulations that the county currently has are subdivision regulations.”
    One more reviewed finding on this topic
    • None — County zoning-based setback requirements in unincorporated Weston County.
      “With this in mind, the only local land use regulations that the county currently has are subdivision regulations.”
  • Lot coverageNone

    County zoning-based lot-coverage requirements in unincorporated Weston County.

    • The county page states that its only current local land-use regulations are subdivision regulations; this conclusion addresses zoning-based lot-coverage controls and does not determine building-envelope or other subdivision standards.
    • Incorporated municipalities may impose their own requirements.
    “the only local land use regulations that the county currently has are subdivision regulations.”
    One more reviewed finding on this topic
    • None — County zoning-based lot-coverage requirements in unincorporated Weston County.
      “With this in mind, the only local land use regulations that the county currently has are subdivision regulations.”
  • Building heightNone

    County zoning-based building-height requirements in unincorporated Weston County.

    • The county page states that its only current local land-use regulations are subdivision regulations; this conclusion addresses zoning-based height controls and does not determine state building, fire, subdivision, or municipal standards.
    • Incorporated municipalities may impose their own requirements.
    “the only local land use regulations that the county currently has are subdivision regulations.”
    One more reviewed finding on this topic
    • None — County zoning-based building-height requirements in unincorporated Weston County.
      “With this in mind, the only local land use regulations that the county currently has are subdivision regulations.”
  • Septic permitRequired

    Conventional small wastewater treatment and disposal systems in Weston County treating less than 2,000 gallons per day of domestic wastewater.

    • The application package is for conventional systems only: standard trench or bed-type disposal systems using stone and pipe or chambers.
    • Seasonal high groundwater, bedrock, or impervious clay layers must be four feet or more below the proposed leachfield bottom.
    • Soil percolation rates must be greater than 5 minutes per inch and less than 60 minutes per inch.
    • Non-conventional systems may require a different process; systems exceeding 2,000 gallons per day or involving wastewater not entirely domestic are outside this application package.
    • For Weston County, completed packages are submitted to DEQ Water Quality Division, 2100 W. 5th Street, Sheridan, WY 82801.
    • Construction authorization is required before proceeding; the application includes a WQD authorization stamp.

    domestic wastewater flow: < 2000 gallons per day (Systems at or above this threshold require a different process.) · seasonal high groundwater, bedrock, or impervious clay depth below proposed leachfield: >= 4 feet · soil percolation rate: 5 to 60 minutes per inch (Must be greater than 5 and less than 60 minutes per inch.)

    “Small Wastewater Treatment Facility Application for Permit to Construct. Use this application ONLY for small wastewater treatment facilities treating less than 2,000 gallons per day of domestic wastewater.”
  • Agricultural exemptionAvailable (with conditions)

    A sale or other disposition of land for agricultural purposes, or adjustment of property lines for agricultural purposes, in unincorporated Weston County.

    • The exemption is subject to the statutory anti-evasion condition: it does not apply if the method of sale or disposition is adopted to evade the subdivision provisions.
    • The county subdivision exemption form cites Wyoming Statutes 18-5-303.
    • Other exemptions listed in the county form include transfers greater than 35 acres, whole-tract transfers of 35 acres or less without a division or split, certain immediate-family transfers, court-created divisions, security instruments, incorporated cities or towns, transfers to the state or political subdivisions, and railroad rights-of-way.
    • Agricultural land tax classification is a separate matter and may require additional statutory criteria, including agricultural use and revenue thresholds.

    statutory citation: W.S. 18-5-303 (Subject to the anti-evasion condition.)

    “A division which is a sale or other disposition of land for agricultural purposes or affects the alignment of property lines for agricultural purposes;”
  • Subdividing landRegulated (with conditions)

    Land divisions and subdivisions in Weston County, especially unincorporated areas subject to county subdivision authority.

    • The county states that its only local land-use regulations are subdivision regulations and that its planning office manages division of lands throughout the county.
    • A subdivision resulting in more than five parcels is a Major Subdivision requiring a Preliminary Plat and subsequently a Final Plat.
    • The preliminary-plat checklist requires submission of sewage-system and water-supply evaluations to the Wyoming Department of Environmental Quality under Chapter 23 procedures.
    • The checklist requires publication of notice once each week for two weeks within 30 days before filing, mailed notice to owners within 1,000 feet at least 14 days before the hearing, six copies of the Preliminary Plat, and a 30-day public-review period.
    • Approval of a Preliminary Plat is effective for 12 consecutive calendar months, except phased developments over more than 12 months; for such phased developments, land without a Final Plat within 36 consecutive months cannot proceed until a new Preliminary Plat is approved.
    • Wyoming law provides exemptions, including certain agricultural-purpose dispositions, family transfers, incorporated-city or town land, and parcels of 35 acres or larger subject to statutory access and utility-easement requirements.

    major subdivision threshold: > 5 parcels (A subdivision resulting in more than five parcels is a Major Subdivision.) · adjacent-owner notice distance: 1000 feet (Certified return-receipt mailing at least 14 days before the hearing.) · preliminary-plat approval period: 12 consecutive calendar months (Phased development over a period of more than twelve months is governed by a 36-month rule.) · phased final-plat deadline: 36 consecutive calendar months (A new Preliminary Plat must be submitted and approved before proceeding.)

    “With this in mind, the only local land use regulations that the county currently has are subdivision regulations. It is the responsibility of this office to manage the division of lands throughout the county.”
    2 more reviewed findings on this topic
    • Regulated (with conditions) — Subdivision and land division in unincorporated Weston County.
      “A subdivision resulting in more than five (5) parcels is defined as a Major Subdivision”
    • Regulated (with conditions) — Land divisions and subdivisions in unincorporated Weston County that are not exempt under Wyoming law.
      “No person shall sell land subject to subdivision regulation under this article, record a plat or commence construction of a subdivision without first obtaining a subdivision permit”
  • Driveway accessRequired

    Roadway approaches and access driveways connecting to Weston County rights-of-way.

    • The county Road and Bridge Department administers permitting for roadway approaches in county rights-of-way.
    • The source does not establish requirements for driveways connecting only to municipal, state, or private roads.
    “Permitting Our department is responsible for permitting such activities as roadway approaches, overhead line crossings, road bores, and pipelines in our rights of way.”
    One more reviewed finding on this topic
    • Required — Roadway approaches and access driveways connecting to Weston County rights-of-way.
      “Permitting Our department is responsible for permitting such activities as roadway approaches, overhead line crossings, road bores, and pipelines in our rights of way. Whether it be a new landowner or homeowner requiring an approach, or a service company laying a pipeline, we provide timely service and assistance in permitting so the installed facility meets the permittee’s needs as well as preserves the functionality and integrity of our roads.”
  • Building in a floodplainRequired

    Proposed subdivision improvements in Weston County that encroach upon waterways, wetlands, or flood plains.

    • The requirement applies when proposed improvements would encroach upon waterways, wetlands, or flood plains.
    • The applicant must provide evidence that proper permits have been received from the applicable governing authority.
    • The cited rule does not establish a countywide floodplain permit requirement for development outside subdivision improvements.
    “Where the proposed improvements would encroach upon any waterways, wetlands or flood plains, evidence that the proper permits have been received”
  • Permit feesPublished (with conditions)

    Subdivision permits administered through the Weston County Clerk and Planning and Zoning process.

    • The fee page is labeled 2023.
    • The published fee is for a sub-division permit; this claim does not establish fees for other permits administered by other authorities.

    sub-division permit fee: 25 USD · fee schedule year: 2023

    “Weston County Clerk’s Office Fees 2023 CERTIFICATES OF TITLE [...] Sub-division Permit | $25.00”
  • Permit processPublished (with conditions)

    Subdivision applications for unincorporated land in Weston County.

    • The county planning page states that applications must be delivered to the Weston County Clerk ten business days before the Planning Board meeting.
    • Applications received after the requested time will not be added to the agenda.
    • The county states that its only local land-use regulations are subdivision regulations.
    • The published forms page lists Preliminary Plat, Final Plat, Minor Subdivision, and Single Land Division applications.

    advance delivery deadline: 10 business days (before the Planning Board meeting) · application fee: 25 USD

    “The Weston County Planning Board requires all applications to be delivered to the Weston County Clerk ten business days prior to their meeting. If applications are not received by the time requested the applicant will NOT be added to the Weston County Planning Board agenda.”
    One more reviewed finding on this topic
    • Partial — Subdivision-related applications and land division in unincorporated Weston County.
      “The Weston County Planning Board requires all applications to be delivered to the Weston County Clerk ten business days prior to their meeting. If applications are not received by the time requested the applicant will NOT be added to the Weston County Planning Board agenda.”

Wyoming rules that apply here

  • Building permitLimited

    New construction, remodeling, and aboveground flammable or combustible fuel-storage-tank installation in Wyoming, including applicable projects in Weston County, within the categories listed by W.S. 35-9-108(a).

    • Before work begins, the owner or designated representative must submit plans to the state fire marshal for review for the listed project categories.
    • Covered categories include state or local government buildings; public buildings over 5,000 square feet including basement; multistory public buildings; child-care centers housing more than 10 children; public bars, lounges, restaurants, night clubs, lodge halls, theaters, churches, or public meeting places regardless of size; and public or private aboveground fuel-dispensing facilities.
    • The requirement does not apply to municipalities or counties granted fire-safety enforcement authority under W.S. 35-9-121.
    • Plan review is not required for remodeling exempt from permitting under the International Code; specified remodeling affecting built-in fire-protection systems remains subject to review, including projects under $40,000 and projects costing $40,000 or more.
    • No covered construction or remodeling may begin until plans are approved; phased plan review is permitted.

    public-building floor area threshold: > 5000 square feet (including basement) · child-care occupancy threshold: > 10 children · remodeling cost threshold: < 40000 USD (review required when the remodeling affects a built-in fire-protection system; projects costing $40,000 or more are also subject to review and fees) · plan-approval deadline: 21 working days (if the state fire marshal does not notify the sender of violations, plans are approved as submitted)

    “Plans shall be submitted to the Department of Fire Prevention and Electrical Safety for Review and Approval before any work shall commence. [...] Fees shall be paid prior to issuance of a Permit to Construct. [...] No work shall be done before the Permit to Construct is issued.”
  • Building code adoptedAdopted (with conditions)

    Statewide Wyoming adoption of the listed International building and related codes, including construction subject to state code enforcement.

    • The State of Wyoming states that it adopted the 2024 International Codes on June 28, 2024.
    • The listed statewide codes include the 2024 International Building Code, along with the 2024 International Fire, Fuel & Gas, Mechanical, and Existing Building Codes and the 2026 National Electrical Code.

    adoption date: 2024-06-28 · International Building Code edition: 2024 edition · National Electrical Code edition: 2026 edition

    “The State of Wyoming, on June 28, 2024 adopted the 2024 International Codes.”
  • InspectionsRequired

    Covered new construction and remodeling projects in Wyoming, including applicable projects in Weston County, after state fire-marshal plan review.

    • The state fire marshal must inspect covered buildings after construction or remodeling and determine conformance with the plan review or amended plan review.
    • The inspection and state-fire-marshal certificate requirements are subject to the exceptions in W.S. 35-9-108(h), (q), and W.S. 35-9-118.
    • Local governments with granted enforcement authority may replace state plan-review and inspection authority.
    • For aboveground flammable or combustible fuel-storage tanks, the state fire marshal inspects the premises and issues a letter of compliance rather than a building certificate of occupancy.
    “Except as provided under subsections (h) and (q) of this section and W.S. 35-9-118, after new construction or remodeling of buildings is completed, the state fire marshal shall inspect the building and determine conformance with the plan review or amended plan review.”
  • Certificate of occupancyRequired

    Newly constructed buildings in Wyoming, including applicable projects in Weston County, that are subject to state fire-marshal plan review and inspection.

    • A certificate of occupancy is issued if the state fire marshal finds conformance with the plan review or amended plan review.
    • A remodeled building receives a letter of compliance instead of a certificate of occupancy.
    • No newly constructed or remodeled covered building may be used or occupied before the certificate of occupancy or letter of compliance is issued.
    • The requirement is subject to the exceptions in W.S. 35-9-108(h), (q), and W.S. 35-9-118.
    • For aboveground flammable or combustible fuel-storage tanks, the state fire marshal issues a letter of compliance rather than a certificate of occupancy.
    “If he finds conformance, the state fire marshal shall issue a certificate of occupancy for a newly constructed building and a letter of compliance for a remodeled building. No newly constructed or remodeled building shall be used or occupied until the state fire marshal has issued a certificate of occupancy or letter of compliance.”
  • Who permits septicState

    Small wastewater facilities, including individual or commercial sewage disposal systems, in Weston County where DEQ is the permitting authority.

    • The DEQ page identifies Weston County as a county where DEQ is the permitting authority.
    • Other jurisdictions may have different permitting authorities, forms, or additional information requirements.

    domestic sewage treatment threshold: < 2000 gallons per day

    “DEQ authorizes permits to construct for small wastewater facilities, defined by Wyoming Statutes 35-11-103(c)(ix), that are located in Campbell (commercial systems only), Carbon, Niobrara, Platte, and Weston Counties where DEQ is the permitting authority.”
    One more reviewed finding on this topic
    • Mixed (with conditions) — Small wastewater facilities, including septic tanks and leachfields, throughout Wyoming.
      “DEQ authorizes permits to construct for small wastewater facilities, defined by Wyoming Statutes 35-11-103(c)(ix), that are located in Campbell (commercial systems only), Carbon, Niobrara, Platte, and Weston Counties where DEQ is the permitting authority. The permitting authority for other jurisdictions may require different forms or additional information.”
  • Well permitRequired

    Construction of a groundwater well or development of a qualifying domestic or stock spring in Weston County.

    • An approved permit must be received before drilling or spring-development activities commence.
    • Wells must be drilled by a Wyoming-licensed water-well drilling contractor, and pumps must be installed by a Wyoming-licensed pump-installation contractor.
    • Applications for wells or springs in a groundwater control area are subject to public notice and comment.
    • A Statement of Completion and Description of Well or Spring, Form U.W. 6, is required within 30 days after the well is completed, including pump installation, and ready for use.
    • Local ordinances may require minimum acreage for construction of a well.

    domestic groundwater permit fee: 50 USD · stock groundwater permit fee: 50 USD · U.W. 6 filing deadline: 30 days after completion (including pump installation and readiness for use)

    “Wells and Springs - Before you drill a well, or develop a spring* (that flows less than or equal to 25 gallons per minute (gpm) and will be used f or D omestic and/or Stock W atering use only), you must submit an "Application for Permit to Appropriate Ground Water", or U.W. 5 Form, to the Ground Water Division and receive an approved permit prior to commencement of any drilling or spring development activities.”
    2 more reviewed findings on this topic
    • Required — Construction of a water well or other means of obtaining underground water for beneficial use in Weston County, subject to Wyoming statewide rules.
      “Any person who intends to acquire the right to beneficial use of any underground water in the state of Wyoming, shall, before commencing construction of any well or other means of obtaining underground water or performing any work in connection with construction or proposed appropriation of underground water or any manner utilizing the water for beneficial purposes, shall file with the State Engineer an application for a permit to make the appropriation (i.e., an Application for Permit to Appropriate Ground Water, or a U.W. 5 Form) and shall not proceed with any construction or work until a permit is granted by the State Engineer (W.S. 41-3-930).”
    • Required — Construction of a groundwater well or development of a spring in Wyoming, including domestic and stock wells or springs flowing at most 25 gallons per minute.
      “Wells and Springs - Before you drill a well, or develop a spring* (that flows less than or equal to 25 gallons per minute (gpm) and will be used f or D omestic and/or Stock W atering use only), you must submit an "Application for Permit to Appropriate Ground Water", or U.W. 5 Form, to the Ground Water Division and receive an approved permit prior to commencement of any drilling or spring development activities.”
  • county zoning authorityGeneral

    County regulation of the location and use of buildings and structures and the use, condition of use or occupancy of land in unincorporated areas of Wyoming.

    • The authority is exercised by each board of county commissioners for the unincorporated area of the county.
    • County zoning may not contravene the zoning authority of an incorporated city or town.
    • A zoning resolution or plan may not prevent a use or occupancy reasonably necessary for extraction or production of mineral resources.
    • A board may not require land use or physical development to be consistent with a local land use plan unless the applicable plan provisions have been incorporated into local zoning regulations.
    • Minimum lot size requirements or other zoning measures may not prevent residential or agricultural uses authorized for land divisions exempt from subdivision requirements under W.S. 18-5-303(a)(i).
    • Private schools meeting the statutory requirements may not be regulated differently from public schools: certification by the professional engineer or architect of record, capacity for fifty (50) students or more, and ownership and operation by a not-for-profit entity.
    “To promote the public health, safety, morals and general welfare of the county, each board of county commissioners may regulate and restrict the location and use of buildings and structures and the use, condition of use or occupancy of lands for residence, recreation, agriculture, industry, commerce, public use and other purposes in the unincorporated area of the county.”
  • county building authorityLimited

    County enforcement and interpretation of local or state fire, building, existing-building, and electrical safety standards, including residential construction in unincorporated areas, when the county obtains local enforcement authority under W.S. 35-9-121.

    • A county must apply for local enforcement authority and receive delegation from the state fire marshal by letter.
    • Before initial delegation, the state fire marshal must determine that the county has adopted minimum standards by ordinance or resolution equivalent to or more stringent than applicable department standards.
    • If the county fails to adopt new standards within six (6) months after department adoption, or fails to maintain standards at least meeting statewide standards, enforcement authority immediately reverts to the department.
    • For fire and building code enforcement, inspectors employed or contracted after July 1, 2010 must be certified by the International Code Council or the International Conference of Building Officials.
    • If electrical-code authority is requested, an electrical inspector must be certified by the International Code Council or International Association of Electrical Inspectors and licensed by Wyoming as a journeyman or master electrician.
    • If the county fails to maintain a required certified inspector, enforcement authority reverts to the department one hundred twenty (120) days after the inspector leaves.
    • A local governmental entity may assume sole plan-review authority and sole construction-inspection authority on approved plans, subject to the statutory certification requirements.
    • If local code provisions are more stringent than adopted state codes, the local code prevails.
    • The statute grants authority to enforce and interpret building standards; it does not establish that every Wyoming county universally requires a residential building permit without county-specific implementation.

    new standards adoption deadline: 6 months (following adoption of new standards by the department) · certification applicability date: July 1, 2010 (inspectors employed or contracted after this date) · authority reversion period after certified inspector leaves: 120 days

    “The state fire marshal shall delegate complete authority to municipalities and counties which apply to enforce and interpret local or state fire, building, existing building standards or electrical safety standards which meet the requirements of this section. The state fire marshal shall notify the governing body of the municipality or county of the minimum standards and requirements of this act and W.S. 16-6-501 and 16-6-502 and transfer jurisdiction and authority by letter.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission — ask the county directly.

  • Owner-builder exemption — Owner-builder exemption from building-permit, inspection, or certificate-of-occupancy requirements in Weston County.
  • Living in an RV — RV occupancy on private land in Weston County, including unincorporated areas
  • Camping on your land — Temporary camping on private land in Weston County
  • Tiny homes — Tiny-home occupancy in Weston County
  • Manufactured homes — Manufactured-home occupancy in Weston County
5 more unanswered
  • Accessory dwellings
  • Septic inspection
  • Off-grid sanitation
  • Mandatory utility hookup
  • Short-term rentals

Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.

Living off-grid in Weston County, Wyoming

Is Weston County a good place to live off-grid or homestead?

Weston County scores 56/100 on the Bolthole Index, a solid county profile. Its strengths: manageable long-term carry cost and deep seclusion — about 434 people within 15 miles. Watch-outs: thin water margin (15.7″/yr rainfall).

Do you need a building permit in Weston County, Wyoming?

Weston County does not require a county building permit for a home in unincorporated areas, and it has no county-wide zoning. Onsite septic is permitted by Wyoming Department of Environmental Quality (DEQ), Small Wastewater Systems. These answers are quoted from official sources and independently re-checked. Rules change and cities within the county differ — always confirm with the county before you buy or build.

How much does land cost in Weston County, Wyoming?

Land in Weston County runs about $953 per acre, based on the latest county data.

What is the water situation in Weston County?

Weston County gets about 15.7" of rain a year, with severe drought in roughly 18.2% of years.

How remote is Weston County?

A typical private-land location has about 434 people within 15 miles and 301,049 within 100 miles. These radius catchments are the published fallback where road routing is unavailable.

Off-grid gear

Going off-grid in Weston County means bringing your own water and power. The kit we’d start with:

These are affiliate links — we may earn a commission, at no cost to you. As an Amazon Associate, Bolthole Index earns from qualifying purchases.

How Weston compares in Wyoming

Compare side-by-side →See all 23 Wyoming counties ranked →