Irontown Modular · Authorized Dealer · Built in Spanish Fork, Utah, delivered across Wyoming

Prefab Homes in Wyoming

My Cozy Outdoors is your authorized Irontown Modular dealer and your one contact through move-in. Irontown, the seller of record, builds your home in Spanish Fork, Utah.

  • From $276,800 with delivery and crane set for 250 miles.
  • Delivery included to Evanston, Rock Springs and Star Valley.
  • Two to four bedrooms and 1,165 to 2,198 sq ft.
  • Built to the residential code, with stamped engineered plans.
  • You buy from Irontown; My Cozy Outdoors is your one contact.
Irontown Modular prefab mountain home at Misty Mountain Court in Montana's Big Sky region, pictured in snow

Will a prefab home work on your lot? Three quick checks

Confirm these three things before you order, with MCO helping you think them through.

Does your zoning allow a house here?

Inside a city, a house is a permitted use on a residential lot, within the zone’s lot size, setback, height and design rules. County rural districts set acreage minimums and how many homes a parcel may hold. Seven counties have no zoning at all; there your recorded covenants are the only design rule. Confirm the zone and your parcel’s legal status with the county before you order.

Can the modules reach your lot?

Modules are about 15 ft wide, so your lot needs a truck route, a staging area and a crane pad. The carrier collects the oversize permit at the port of entry, moves in daylight and uses a pilot car if the permit requires it. Interstate 80 wind closures and mountain pass limits shape the route, and Yellowstone National Park is not a delivery route. Irontown reviews the route in the feasibility phase.

Do you have sewer, or will you need septic and a well?

Without sewer, your septic permit comes first, through your county program or the Department of Environmental Quality (DEQ). System size follows bedroom count. You need a permit from the State Engineer‘s Office before drilling a well. Ask your county early.

Confirm your property requirements before ordering
This page is a starting point for planning a full-size home. MCO helps and advises but takes no responsibility for zoning, permits, impact fees, septic approval or code compliance. Before ordering, confirm your parcel, plan and use with city or county planning and building offices, and septic approval with the health department. MCO strongly recommends contacting those offices and can share the code sections it found and suggest questions.

Prefab homes and cabins for Wyoming

Explore two to four bedrooms across 1,165 to 2,198 sq ft. Choose a family home, a cabin or a mountain layout. Designer starting finishes can change to Modern, Balance or Rustic through your quote.

Irontown Modular Walker prefab home

Walker

1,165 sq ft · 2 bed, 2 bath · one story · from $276,800

Two bedrooms, a generous kitchen and dining area, porch entry choices and a basement option.

See the Walker plan

Irontown Modular San Conejo prefab home

San Conejo

1,250 sq ft · 2 bed, 2 bath · one story · from $296,300

Spanish-style two-bedroom home with an island kitchen and a suite opening onto an optional full-depth deck.

See the San Conejo plan

Irontown Modular Aspen prefab home

Aspen

1,255 sq ft · 3 bed, 2 bath · one story · from $296,700

Three-bedroom cabin with open living space, a porch and an optional basement stair.

See the Aspen plan

Irontown Modular Berkeley 1 prefab home

Berkeley 1

1,268 sq ft · 3 bed, 2 bath · two story · from $297,800

Traditional two-story home, 15 ft wide, with living downstairs and three bedrooms upstairs; local width rules need attention.

See the Berkeley 1 plan

Irontown Modular Berkeley 2 prefab home

Berkeley 2

1,268 sq ft · 3 bed, 2 bath · two story · from $297,800

Contemporary Berkeley layout with bold rooflines, distinctive windows and an optional garage level below.

See the Berkeley 2 plan

Irontown Modular Donner 1300 prefab home

Donner 1300

1,315 sq ft · 3 bed, 2 bath · one story · from $330,900

The Aspen cabin layout with a modern exterior, separated bedrooms and a fireplace spot.

See the Donner 1300 plan

Irontown Modular Spirit prefab home

Spirit

1,320 sq ft · 2 bed, 2 bath · one story · from $306,300

Two-bedroom modern home with a low roofline, large kitchen island and covered porch turning the corner.

See the Spirit plan

Irontown Modular Donner 1560 prefab home

Donner 1560

1,576 sq ft · 3 bed, 2 bath · one story · from $416,300

Three-bedroom family home with a big living room, full-height kitchen cabinets and entry-side mud and laundry space.

See the Donner 1560 plan

Irontown Modular Bunkhouse prefab home

Bunkhouse

1,588 sq ft · 2 bed, 1 bath finished, plus an unfinished upstairs bunk room and bonus room · two story · from $379,300

Two-story cabin with two finished downstairs bedrooms, unfinished upstairs bunk and bonus rooms, and decks on both floors.

See the Bunkhouse plan

Irontown Modular Thatcher prefab home

Thatcher

1,860 sq ft · 3 bed plus an office, 2 full baths and a powder room · one story · from $423,200

Craftsman home with three bedrooms, an office or fourth bedroom, a big kitchen, mud room and covered porch.

See the Thatcher plan

Irontown Modular Mill Creek prefab home

Mill Creek

2,198 sq ft · 3 bed, 2 bath · one story · from $502,100

Spacious one-story home with three bedrooms, a study, full front porch and rear primary suite.

See the Mill Creek plan

Mountain and cabin plans

Aspen, Donner 1300 and the two story Bunkhouse are finished cabin modules built and set by Irontown, not kits. You can change the Designer finish to Modern, Balance or Rustic in your quote.

Rock Springs, Rawlins, Evanston, Riverton and Casper have 24 ft width rules that may apply inside city limits. Both Berkeley plans are 15 ft wide, so ask first; all other plans are at least 24 ft wide.

PlanSizeRoomsStoriesFootprintFrom (Multi-State Designer Series)
Walker1,165 sq ft2 bed, 2 bathOne42 ft x 27 ft$276,800
Eagle Landing 12201,220 sq ft3 bed, 2 bathOne65 ft x 20 ft including the attached two car garageUtah only
San Conejo1,250 sq ft2 bed, 2 bathOne46 ft x 28 ft$296,300
Aspen1,255 sq ft3 bed, 2 bathOne24 ft x 52 ft$296,700
Berkeley 11,268 sq ft3 bed, 2 bathTwo48 ft x 15 ft, two story$297,800
Berkeley 21,268 sq ft3 bed, 2 bathTwo48 ft x 15 ft, two story$297,800
Donner 13001,315 sq ft3 bed, 2 bathOne56 ft x 24 ft 6 in$330,900
Spirit1,320 sq ft2 bed, 2 bathOne46 ft x 28 ft$306,300
Donner 15601,576 sq ft3 bed, 2 bathOne64 ft 6 in x 36 ft 6 in$416,300
Bunkhouse1,588 sq ft2 bed, 1 bath, plus unfinished upstairsTwo36 ft x 26 ft, two story$379,300
Thatcher1,860 sq ft3 bed plus office, 2.5 bathOne48 ft x 63 ft$423,200
Mill Creek2,198 sq ft3 bed, 2 bathOne55 ft x 53 ft$502,100

Modular homes in Wyoming: prices and delivery

Multi-State Designer Series starting prices run from $276,800 for Walker to $502,100 for Mill Creek. They include modules, delivery and standard crane set for the first 250 miles from Spanish Fork, reaching Evanston, Kemmerer, Green River, Rock Springs, Afton and Thayne. Beyond that, transportation costs $12.75 per mile per truckload. Extra transportation per load is about $600 to Jackson, $2,300 to Casper, $2,800 to Cheyenne and $3,900 to Gillette. A two-module home doubles those figures.

Approximate road miles from the factory
Estimated delivery beyond the 250 included miles
Starting price, delivered and set, plus estimated extra miles

Estimate only. Multi-State Designer Series starting price with standard delivery and crane set. Beyond 250 miles the rate is $12.75 per mile per truckload; a full-size home ships as two to four modules on separate trucks and is stitched together on your foundation, and your written quote confirms the count. Foundation, site work, stitch, utilities, permits, fees, engineering, pilot cars and sales tax are not included.

Choose your nearest town, plan and estimated truckloads in the calculator. Full-size homes travel as two to four modules on separate trucks. The written quote confirms the load count, route and any pilot cars before construction.

What the starting price includes

  • Finished modules in the Designer finish series.
  • International Residential Code construction with engineered, stamped plans for your permit.
  • Delivery for the first 250 miles from Spanish Fork.
  • The standard crane and set on your foundation.
  • Help from Irontown’s interior designer with your finish selections.
  • Irontown’s 10 year limited structural warranty.

Costs not in the home price

These are items the general contractor, city and county charge for, quoted by the contractor and city, not by MCO.

  • Land.
  • Site preparation and grading.
  • Foundation or basement built to the structural engineer’s specifications.
  • Utility trenches and water, sewer or septic, electrical and gas connections.
  • Stitching and finishing the seams between modules.
  • Steps, porches, decks and garages outside the plan, plus driveways and landscaping.
  • Building, review, electrical, septic and well permits; tap, connection and applicable housing mitigation fees.
  • Site and foundation engineering.
  • Applicable tax.
  • Transport touch-ups such as drywall cracks, caulk and door adjustments, outside warranty coverage; transport insurance covers major transit damage.

Your side of the budget includes land, foundation, site work, stitch, utilities, permits, tap fees, site engineering and applicable tax. The general contractor prices on-site work, and the city or district supplies its charges. MCO does not quote those items.

An impact fee is a one-time city or county charge for public services. Wyoming has no state impact fee law; most cities and counties charge none. City or district water and sewer fees are paid at hookup. For a 3/4 inch meter, Riverton charges $765 water and $398 sewer; Laramie charges $3,021 and $2,811. Jackson charges every new detached home size-based housing mitigation, paid in lieu below one unit. Unincorporated Teton County exempts homes up to 3,000 sq ft.

Wyoming taxes the first sale of a factory-built home; the written quote shows how tax is handled for your sale. Once set on its foundation, your home is real property. The county assessor adds its value to your parcel the year it appears. The homeowner exemption has its own residence and filing rules, so ask the assessor.

Not a manufactured home, and why that matters in Wyoming

Your home is not a manufactured home built to the federal HUD code, a mobile home or a kit. Irontown builds sections to the International Residential Code used by Wyoming cities and counties with building programs. A crane sets them on your permanent foundation. On this page, prefab and modular mean the same thing.

Wyoming calls this a transportable home, including a modular home. Only manufactured homes built to the federal HUD code get vehicle titles; yours gets none. No state modular program, label, plan review or inspector exists. Your city or county building department permits and inspects foundations, utilities, set and stitch. It chooses how to check factory work: its own inspection, an inspection agency’s report or an engineer’s letter. Irontown settles this with your city or county during feasibility.

Without a building department, no house building permit applies; the state issues your electrical wiring permit. Once set, your home is permanent real property, assessed with your land. Homeowner exemptions have residence and filing rules. Most buyers use construction loans that convert to mortgages. Your lender decides whether conventional, Federal Housing Administration (FHA) or Department of Veterans Affairs (VA) programs apply.

Built for Wyoming: snow, wind and earthquakes

Wyoming has no statewide residential code or state snow, wind or earthquake figures for houses. Cities and counties with building programs set their own. During pre-construction, Irontown’s engineers design for your site, using your city or county’s published figures where available. You have nothing to calculate.

How much snow your roof must carry

A snow load is the weight of snow your roof must carry, in pounds per square foot (psf). Your city or county prints its own figure: Cody 20 psf with 30 recommended, Casper, Green River, Laramie and Sheridan 30, Laramie County 32, Evanston 40 or 60 in the basins, Lincoln County 50 to 100 by zone, and Jackson 93. Natrona County uses 100 psf at 6,000 ft and above on Casper Mountain, because ground snow rises with elevation. Irontown’s engineers design your roof and structure to your figure.

Wind and earthquakes

Most Wyoming cities design for winds of 105 to 115 miles per hour. Green River, Laramie, Cheyenne, Sheridan and Gillette publish 115 miles per hour. Earthquake design levels around Jackson, Star Valley and Evanston are higher than on the plains, and the stamped plans carry them. Irontown’s engineered plans are stamped for your site’s loads during pre-construction, the same requirement a site-built home meets.

Wildfire rules depend on where your lot is

Wyoming has no state house sprinkler mandate or wildfire construction code; rules are local. Jackson requires a wildland-urban interface permit from Jackson Hole Fire and Emergency Medical Services (EMS) before your building permit. Rawlins adopts a wildland interface code; Natrona County applies wildfire rules on Casper Mountain. Defensible space is cleared, maintained ground around your home; State Forestry Division guidance calls for at least 100 ft. Irontown addresses your lot’s wildfire rules in engineered plans during pre-construction.

Irontown homes in the neighboring states

Irontown builds in Spanish Fork and delivers and sets homes across Wyoming. Its photo pages show homes in the neighboring states: the Misty Mountain Court home in Montana’s Big Sky region, pictured at the top of this page, the Deer Valley, Utah mountain home and the Deeth, Nevada ranch home. The photos below look inside it. See all Residential Projects

Misty Mountain Court, a Modern Mountain Getaway

Misty Mountain Court, a Modern Mountain Getaway

Big Sky region

Two-story mountain living in the Big Sky region, pictured in snow.

See the Misty Mountain Court, a Modern Mountain Getaway photos

Deer Valley Mountain Home, 2017

Deer Valley Mountain Home, 2017

Deer Valley, Utah · 2017

A Deer Valley mountain home with a pool table, office and media room.

See the Deer Valley Mountain Home, 2017 photos

Deeth, Nevada Modular Home, 2010

Deeth, Nevada Modular Home, 2010

Deeth, Nevada · 2010

Exterior views of a Deeth ranch home with a porch and three dormers.

See the Deeth, Nevada Modular Home, 2010 photos

Inside the Misty Mountain Court home

Living room of the Misty Mountain Court Irontown modular home in Montana, with large windows onto the snowy mountainsKitchen of the Misty Mountain Court modular home in Montana: white cabinets, black countertops and a breakfast barOpen living, dining and kitchen area of the Misty Mountain Court modular home in Montana, with the staircasePrimary bedroom of the Misty Mountain Court modular home in Montana, with windows onto the snowy mountains

See all the Misty Mountain Court photos and floor plans

From feasibility to delivery

Irontown’s phases total about five to seven months: 1 to 2 weeks, 2 to 3 months, then 12 to 16 weeks. Your city or county reviews permits alongside pre-construction; timing varies. Your contractor’s site work adds time. Interstate 80 wind closures and winter affect delivery.

  1. Feasibility reviewIrontown · 1 to 2 weeksYour $2,000 review is credited to your contract. It covers virtual site and route reviews, budget, schedule, building requirements, financing assistance and contractor support.
  2. Pre-construction and permitsIrontown and your city or county · 2 to 3 months plus permit reviewIrontown visits your site, engineers stamped plans for your snow, wind, earthquake and wildfire rules, and helps you choose finishes. Your contractor applies for the building permit, or the state electrical wiring permit where your county issues none.
  3. Site and foundationYour contractorYour contractor handles grading, the engineered foundation, utility trenches and connections. This work is timed to delivery.
  4. Factory build, delivery and setIrontown · 12 to 16 weeksIrontown builds, ships and crane-sets your modules under an oversize permit obtained at the port of entry. The delivery window accounts for Interstate 80 wind closures and winter.
  5. Stitch and finishYour contractorYour contractor connects and weatherproofs the modules, finishes the seams inside and out, and connects and tests the systems.
  6. Inspections and keysYour city or county and your contractorFinal inspections apply where a building department exists. Your contractor completes the punch list, walkthrough and handover of documentation and keys. Warranty support follows.

Who does what

Irontown ModularIrontown is your seller of record and builds your modules in Spanish Fork. It handles feasibility and pre-construction, supplies stamped plans, ships and sets your modules, and backs the warranty.
My Cozy OutdoorsYour authorized dealer is your single contact from first question to move-in. MCO helps with plans, your quote, delivery pricing, lender and contractor introductions, and your factory visit.
Your general contractorYour contractor separately prices site work, foundation, utilities, permit applications, stitch, finish and inspections. Wyoming has no state general contractor licence; your city or county may require one. Electricians are state-licensed.
Your city or countyWhere it runs a building department, it permits and inspects the foundation, utilities, set and stitch, and decides how to check the factory-built part. It keeps zoning, setbacks, snow and wind figures and design review. Where there is none, the state issues the electrical wiring permit, the county or the Department of Environmental Quality the septic permit, and the State Engineer’s Office the well permit.

Your general contractor handles the site

Your general contractor handles site work, foundation, utilities, stitch and finish, priced separately from your home. Wyoming has no state general contractor licence; some cities license or register contractors, and the state licenses electricians. Irontown has connections to some general contractors, so contact MCO to see whether we can recommend one in your area. The feasibility review includes contractor support. State law does not restrict you from building your own home, but your city or county’s permit and occupancy conditions can apply.

Are you a general contractor building homes for clients? Email support@mycozyoutdoors.com to join the MCO contractor network.

Financing your modular home

Most buyers use a construction loan that converts to a mortgage after the home is set and finished. Your lender releases funds in draws as work progresses. Your lender decides whether Federal Housing Administration (FHA), Department of Veterans Affairs (VA) or conventional programs apply.

Irontown’s referral lenders understand modular construction and its draw schedule. They are external references, not financing offered by Irontown. MCO does not lend or promise approval. Ask MCO for an introduction with your quote.

City and county starting points

Before ordering, you must confirm requirements with city or county planning and building offices, and septic with the county program.

City rows apply inside city limits. County rows cover unincorporated areas of that county. These notes identify permitting offices, local constraints and selected published charges for planning modular homes in Wyoming.

Zoning, delivery route and site detailsThe longer notes behind the three checks above

Inside city limits, single-family homes are permitted uses on residential lots subject to the zone’s rules. Minimum lot size, setbacks, height, coverage, design review and HOA requirements shape the choice. County rural residential and agricultural districts have acreage minimums and dwelling-per-parcel rules; some agricultural districts require an additional land-use decision. Several counties have no zoning. A parcel’s status under county subdivision law is confirmed with the county before ordering.

Delivery needs a suitable truck route, staging area and crane pad. The carrier obtains the oversize permit at the port of entry, follows daylight rules and uses a pilot car if the permit requires it. Interstate 80 wind closures and mountain pass restrictions affect routing. Yellowstone National Park is not a delivery route. Winter timing is planned during feasibility; a winter or windy-season delivery can wait for a weather window.

Rural lots need septic permission from the county program or Department of Environmental Quality and a State Engineer permit for a well. Ground snow loads vary with elevation. Snow, wind, seismic conditions and applicable wildfire rules are addressed in the engineered plans during pre-construction.

Southwest Wyoming, inside the included delivery miles: Evanston, Green River, Rock Springs and Star ValleyEvanston, Uinta County, Lincoln County, Green River, Rock Springs, Sweetwater County, Sublette County
City or countyPermit office, fees and review time we found
EvanstonEngineering and Planning and Development issues permits; roof snow loads are 40 psf, or 60 psf in basins. Ask whether Code 7-52.1‘s 24 ft width rule applies to your 15 ft wide Berkeley plans; stormwater fees are $575 to $2,875 per acre. Phone 307-783-6470.
Uinta CountyThe county issues no building permit for a house; land-use certificates cost $25, or $50 with an address. Modular homes qualify as dwellings and every plan clears minimum sizes; well and septic lots need 1 acre, and septic permits cost $150. Phone 307-783-0318. Source: Uinta County Land Use Resolution 2023, Chapter 5 (minimum dwelling size) and Chapter 3 (Land Use Certificate)
Lincoln CountyThe county issues no building permit for a house; Planning and Development charges $250 for its land-use Residential Construction Permit. Modular homes need permanent perimeter foundations without chassis; recommended ground snow loads are 50 to 100 psf, and septic permits cost $300. Phone 307-885-3106. Source: Lincoln County Land Use Regulations, Chapter 7 (definitions: modular home; Land Use Table)
Green RiverThe Building Division permits modular homes as single-family dwellings without a width rule. Ground snow is 30 psf and wind is 115 mph; your permit requires a $100 review deposit, and water and sewer connection fees follow annual resolutions. Phone 307-872-6140. Source: Green River Zoning Ordinance, Land Use Table 1.111 (site-built and modular dwellings), Section 1.7 (definitions) and City Code 7-17 (building code)
Rock SpringsThe Chief Building Inspector issues building and electrical permits; your house permit costs $1,100. Ask how Code 157.145‘s 24 ft width rule affects every plan, especially the 15 ft wide Berkeley plans; plans must show the mine subsidence classification. Phone 307-352-1540.
Sweetwater CountyThe county issues no building permit for a house; its $50 zoning permit follows septic permission. Modular homes need permanent code-compliant foundations; lots without central water and sewer need 2 acres, and you must ask whether R-1 allows modular homes. Phone 307-872-3914. Source: Sweetwater County Zoning Resolution (amended Feb. 18, 2025), Sec. 3.H (residential permits), Sec. 21.206 (modular home) and the District Use Chart
Sublette CountyThe county issues no building permit for a house; development permits cost $150 and septic permits $200. Modular homes count as dwellings; ask about 15 ft wide Berkeley plans before choosing, and rural residential lots require 2 to 20 acres. Phone 307-367-4375. Source: Sublette County Zoning and Development Regulations, Chapter I Sec. 6 (definitions: modular home) and Chapter IV Sec. 3 (permit decision)
Jackson Hole and Teton CountyJackson, Teton County
City or countyPermit office, fees and review time we found
JacksonPlanning and Building permits homes; code ground snow is 93 psf. Every new detached home owes size-based housing mitigation, paid in lieu below one unit; water costs $783 to $1,564 and sewer $2,812 to $5,623 by bedrooms, with no modular restrictions. Phone 307-733-0440. Source: Jackson Land Development Regulations, Division 6.3 (affordable workforce housing standards) and 6.1.4
Teton CountyThe Building Division issues permits; your site’s snow load comes from the ASCE Hazard Tool. Detached homes up to 3,000 sq ft are exempt from housing mitigation, and the factory-structure fee is $430 per modular unit, with no width rule. Phone 307-732-8200. Source: Teton County Land Development Regulations, Division 6.3 (affordable workforce housing standards: 3,000 sq ft detached single-family exemption)
Rawlins, Laramie and the Interstate 80 corridorRawlins, Carbon County, Laramie, Albany County
City or countyPermit office, fees and review time we found
RawlinsThe Building Division permits modular homes as single-family homes; water and sewer taps each cost $1,000 for a 3/4 inch meter. Ask whether the 24 ft width rule in 19.24.015 reaches your 15 ft wide Berkeley plans. Phone 307-328-4500, extension 1014. Source: Rawlins Municipal Code 19.08.490 (definitions: modular home), 19.24.015 and 19.08.184
Carbon CountyThe county issues no building permit for a house beyond zoning review, treating modular homes as houses. RRA and FPSR require 5 acre lots and one dwelling per 10 acres; nonfarm RAM houses need a $300 conditional use permit or rezoning. Phone 307-328-2651. Source: Carbon County Zoning Resolution of 2015 (amended 2020), Section 4.4 (RAM district uses), Section 7.4 (building permit) and definitions
LaramieCode Administration issues building and electrical permits for modular dwellings without a width rule. For your 3/4 inch meter, water costs $3,021 and sewer $2,811, plus a $731.40 meter package. Phone 307-721-5271. Source: Laramie Municipal Code 15.28.030 (definitions: IBC/IRC modular home), Table 15.10-1 and 15.24.010 (design criteria)
Albany CountyThe county issues no building permit for a house beyond its $300 zoning certificate, which covers modular houses. Rural residential lots need 5 acres with one dwelling per 10 acres; your septic permit costs $400. Phone 307-721-2568. Source: Albany County Zoning Resolution (definitions: single-family dwelling including modular homes) and the zoning certificate fee schedule
Cheyenne and southeast Wyoming: Wheatland and TorringtonCheyenne, Laramie County, Platte County, Goshen County
City or countyPermit office, fees and review time we found
CheyenneBuilding Permitting and Licensing gives review comments in about 10 business days; new homes incur $400 residential enhancement and $1,029.82 per-unit fees. The Board of Public Utilities sets water and sewer tap fees; building officials determine factory-work review after foundation permitting and inspection. Phone 307-637-6265. Source: Cheyenne City Code Chapter 15.36 (prefabricated buildings), 15.10.020 (design criteria) and 15.08.030 (permit fees)
Laramie CountyPlanning and Development issues house permits, reviewing paid applications in 10 business days. Your modular home needs an inspected foundation, an IRC letter and final inspection; LU rural lots need 5.25 acres, and ground snow is 32 psf. Phone 307-633-4303. Source: Laramie County Residential Code, Chapter 45 (prefabricated buildings) and Land Use Regulations (definitions: modular home)
Platte CountyThe county issues no ordinary building permit for a house; zoning certificates cost $20 and DEQ permits septic. Class I allows one dwelling per lot; nonfarm rural RAM houses may need special use permission costing $250 plus notice costs, or $300 rezoning. Phone 307-322-1330. Source: Platte County Land Use Rules and Regulations (2025), 4.05.020 (Class I lots) and 8.05.010 (RAM district)
Goshen CountyThe county issues no building permit for a house and has no zoning; it handles septic and county-road approach permits. You still need a lawful parcel and applicable well and state electrical wiring permits, and must follow recorded restrictions. Phone 307-532-3852. Source: Goshen County Planning and GIS (no zoning regulations or building inspections; subdivision regulations)
Casper and central Wyoming: Douglas and LuskCasper, Natrona County, Converse County, Niobrara County
City or countyPermit office, fees and review time we found
CasperBuilding Inspection requires factory wiring inspection; ground snow is 30 psf, and plan checks cost $280. Ask how it files your 15 ft wide Berkeley plans outside Code 17.08.010‘s 24 ft modular definition; water and sewer permits each cost $35. Phone 307-235-8254.
Natrona CountyDevelopment permits modular houses after a $50 zoning certificate, without a width rule. Roof snow is 30 psf below 6,000 ft and 100 psf at 6,000 ft and above; rural residential lots need 5 acres for one primary dwelling. Phone 307-235-9447. Source: Natrona County Resolution 90-24 (adoption of the residential code, design values and permit valuation) and the Zoning Resolution (definitions: modular home)
Converse CountyThe county issues no building permit for a house and has no zoning; Special Projects issues $200 septic permits. You still need applicable county-road access, address, well and state electrical wiring permits, and must follow mapped floodplain rules and recorded covenants. Phone 307-358-1990. Source: Converse County Permits and Regulations (septic, approach access and address permits)
Niobrara CountyThe county issues no building permit for a house; DEQ permits septic and the state permits electrical wiring. Class I allows one dwelling per lot; ask Planning and Zoning whether your Class V house needs the $40 zoning change and hearing. Phone 307-334-2211. Source: Niobrara County Planning and Zoning Manual (2019): zoning classes and the change of zoning application
Riverton, Lander and the Wind River Basin: Thermopolis and WorlandRiverton, Fremont County, Hot Springs County, Washakie County
City or countyPermit office, fees and review time we found
RivertonThe building official issues permits; water costs $765 and sewer $398 for a 3/4 inch meter. Ask whether your 15 ft wide Berkeley plans meet the 24 ft width and 850 sq ft minimums in 17.28.010. Phone 307-857-7712.
Fremont CountyThe county issues no building permit for a house; wastewater permits cost $650 and residential driveway permits $125. Factory-built homes on foundations count as single-family homes; you must follow covenants, floodplain rules and well and electrical requirements, with separate Wind River Reservation zoning. Phone 307-332-1077. Source: Fremont County Planning Department, Building Codes and Certificates of Occupancy
Hot Springs CountyThe county issues no building permit for a house; septic applications precede construction by at least 14 days. Factory-built homes count as single-family dwellings; land-use category changes need a free Land Use Change Permit, so ask the Planner about agricultural parcels. Phone 307-864-2961. Source: Hot Springs County Land Use Plan (2020, amended 2022), Sec. 4-4 to 4-9 (Land Use Change Permit)
Washakie CountyThe county issues no building permit for a house; septic permits cost $100 and the state permits electrical wiring. Your module on a permanent foundation falls outside its chassis-built mobile-home definition; ask the Planner whether earlier zoning remains effective. Phone 307-347-6778. Source: Washakie County Subdivision and Development Regulations (2024), Sec. 2.01 definitions
Cody, Powell and the Big Horn BasinCody, Park County, Big Horn County
City or countyPermit office, fees and review time we found
CodyThe Building Division treats modular homes like site-built dwellings for zoning, without a width rule. Ground snow is 20 psf with 30 psf recommended; your residential plan review costs $250, and water and sewer charges apply. Phone 307-527-3476. Source: Cody Code of Ordinances 10-2-1 (definitions: modular home equivalent to a site-built home)
Park CountyThe county issues no building permit for a house beyond its $75 zoning check; septic permits cost $250. Modular homes count as site-built homes without width or size minimums; snow recommendations are 20 to 30 psf, with studies at higher elevations. Phone 307-527-8540. Source: Park County Development Standards and Regulations (2025), Chapter II definitions (modular home) and Chapter IV Sec. 4.a (Building and Zoning Permit)
Big Horn CountyThe county issues no building permit for a house; Land Planning charges $50 for development permits, septic permits cost $150 and addresses $125. Factory-built homes on foundations count as single-family homes; your free driveway permit takes 2 to 3 weeks. Phone 307-568-2424. Source: Big Horn County Land Planning: Development Application (2026)
Sheridan, Gillette and northeast Wyoming: Buffalo, Sundance and NewcastleSheridan, Sheridan County, Johnson County, Gillette, Campbell County, Crook County, Weston County
City or countyPermit office, fees and review time we found
SheridanThe Building Division permits modular homes as dwellings without a width rule. Water investment fees are $132 and sewer $273 per 250 sq ft, plus $570 for a 3/4 inch connection package; ground snow is 30 psf and wind 115 mph. Phone 307-674-5941. Source: Sheridan City Code Appendix A (Zoning), Section 2 (definitions: modular home) and Section 7-2 (building code)
Sheridan CountyThe county issues no building permit for a house outside its enforcement area and newer subdivisions; zoning certificates cost $150. Ask Public Works how it permits modular homes; unsewered residential lots need 2 acres, or 5 in groundwater protection areas. Phone 307-675-2420. Source: Sheridan County Zoning Rules and Regulations (amended Aug. 5, 2025), Section 6 (districts) and the Building Standards
Johnson CountyThe county issues no building permit for a house and has no zoning; new septic permits cost $200, or $250 for non-conventional systems, plus $50 per inspection. Every system needs an engineer’s stamped plans; covenants, floodplain rules and well and electrical permits remain. Phone 307-684-1907. Source: Johnson County Planning and Zoning: Small Wastewater Treatment Facility Regulations (amended April 21, 2026)
GilletteThe Building Division permits modular homes as single-family dwellings without a width rule. For meters up to 1 inch, water costs $1,081 plus $919 and sewer $3,000; roof live load is 30 psf and wind is 115 mph. Phone 307-686-5260. Source: Gillette Zoning Code (Dec. 17, 2024), Section 11 (definitions: modular home) and City Code Chapter 5
Campbell CountyThe county issues no building permit for a house outside platted subdivisions; electrical, plumbing, mechanical and septic permits still apply. Public Works treats modular homes as single-family dwellings; residential permits are free, and zoned A-L land allows one dwelling per 10 acres. Phone 307-682-1970. Source: Campbell County Zoning Regulations (Chapter 7) Section 5 (definitions: single-family dwelling, modular home) and Chapter 4 Building Rules
Crook CountyThe county issues no building permit for a house and has no zoning; septic permits cost $200 with review in 10 to 15 days. You still need applicable addresses, county-road access, well and electrical permits, and must follow recorded covenants. Phone 307-283-4548. Source: Crook County Planning letter of Nov. 27, 2024 (Zoning and Building Permit Information)
Weston CountyThe county issues no building permit for a house; applications go through the County Clerk, and DEQ permits septic. You need a legal parcel, room for a replacement septic field and applicable electrical and $50 well permits, and must follow covenants. Phone 307-746-4744. Source: Weston County Growth and Development (subdivision regulations; no zoning or building code)

How Wyoming regulates a factory-built home

These state rules shape your project, and the section references are here for your building department.

  • Wyoming law calls this a transportable home, which includes a modular home. There is no state modular program, label or plan review. Where your city or county runs a building department, it decides how to check the factory-built part: its own inspection, an inspection agency’s report or an engineer’s letter. Irontown settles that with your office during feasibility.W.S. 31-1-101; 31-2-501; 35-9-121
  • Wyoming has no statewide residential code. Your city or county building department issues permits and inspects site work. Without a building department, no building permit applies to your house. County land-use rules still apply, and the state issues your electrical wiring permit.35-9-108; 35-9-121; 35-9-120
  • Fremont, Big Horn, Converse, Goshen, Johnson, Crook and Weston counties have no zoning or building code. You still need a legal parcel and applicable septic, well and electrical permits. Recorded covenants, mapped floodplain rules and access requirements still apply.18-5-201; 35-11-301; 41-3-930
  • The Fast Track Permits Act covers cities and counties with zoning and residential codes. They have 10 business days for completeness notices and 30 calendar days for decisions. Requests for information pause the clock. A missed deadline counts as approval, but inspections still apply.16-13-101; 16-13-102
  • Cities control zoning; counties choose whether to zone. Rural districts decide minimum acreage and how many homes your parcel can hold. Confirm your parcel’s legal status with the county before ordering. Read recorded covenants too: they can restrict home size, factory construction and design.15-1-601; 18-5-301; 18-5-303; 34-1-154
  • Wyoming has no state impact fee law. Water and sewer connection fees are set by the city or district: Riverton charges $765 and $398, and Gillette $1,081 plus $919 for water and $3,000 for sewer. Jackson charges every new detached home a size-based housing mitigation, and unincorporated Teton County exempts homes up to 3,000 sq ft.15-7-602; published city and county fee schedules, September 2026
  • Wyoming taxes the first sale of a factory-built home, and the written quote shows how tax is handled for your sale. Once set on a permanent foundation, the home is real property and the county assessor adds it to your parcel.39-15-103; 39-11-101; 39-13-103; 39-11-105
  • Without sewer, get your septic permit first through your county program or the Department of Environmental Quality. System size follows bedroom count. If your lot needs a well, address that first too. The State Engineer’s Office must issue your well permit before drilling.35-11-304; Chapter 25; 41-3-907
  • Wyoming has no state general contractor licence; your city or county’s requirements apply. The state licenses electricians. State law does not restrict owner-builders, but local conditions apply. A contractor must give you written notice of the right to lien before receiving any payment.15-1-103; 35-9-122; 35-9-123; 29-2-112

Visit the Spanish Fork factory

Walk through finished modules and see finish choices in Spanish Fork, about an hour south of Salt Lake City International Airport, with direct flights from Jackson, Casper and Cody. Driving takes about two hours from Evanston via Interstate 80, three and a half from Rock Springs, five and a half from Jackson, seven from Casper and seven and a half from Cheyenne. Ask MCO about arranging your visit.

Looking for something smaller? See our modular ADU homes (400 to 1,200 sq ft backyard homes and casitas) and park model homes (cabins for resorts and RV lots).

Common Questions

Irontown’s Multi-State Designer Series starting prices run from $276,800 for Walker to $502,100 for Mill Creek. Delivery and crane set include 250 miles, reaching southwest Wyoming. Beyond that, extra transportation is per truckload: about $600 to Jackson or $2,800 to Cheyenne. Land, site work, foundation, stitch, utilities, permits, engineering and tax are extra.

No. This modular home is factory-built to the International Residential Code and set on a permanent foundation. Wyoming calls it a transportable home, including a modular home. It is not built to the federal HUD code and gets no vehicle title.

Wyoming has no state modular program. Where a local building department exists, it reviews factory work its own way and inspects site work. Many counties issue no house building permit. The approach for your project is settled during feasibility; where no building department exists, the state issues the electrical wiring permit.

Irontown lists 1 to 2 weeks for feasibility, 2 to 3 months for pre-construction, and 12 to 16 weeks for construction and delivery. Local permit review adds time. Site readiness, weather and route restrictions can affect delivery.

Wyoming has no state impact fee law; most jurisdictions charge none. Water and sewer connection fees vary locally. Jackson charges size-based housing mitigation for every new detached home, paid in lieu below one unit; unincorporated Teton County exempts detached homes up to 3,000 sq ft.

Rural districts set acreage and dwelling limits, and the parcel must be legally created. Unzoned counties still have septic, well, electrical, floodplain and covenant requirements. Mountain snow loads vary by elevation; engineered plans address those loads, wind and applicable wildfire rules. Access also affects feasibility.

Many buyers use construction financing with staged draws that converts to a mortgage after completion. Ask your lender about FHA, VA or conventional options. MCO can introduce Irontown’s external referral lenders with your quote; financing approval is not promised.

Yes. A general contractor handles foundation, utilities, delivery coordination, stitch and finishing. Wyoming has no state general contractor licence, but local requirements apply and electricians are state-licensed. Feasibility includes contractor support; MCO can discuss whether a recommendation is available in your area.

Thatcher offers 1,860 sq ft from $423,200; Mill Creek offers 2,198 sq ft from $502,100. Prices include delivery and crane set for 250 miles from Spanish Fork, reaching Evanston, Green River, Rock Springs and Star Valley. Beyond that, transport adds $12.75 per mile per truckload. These homes need several truckloads; use the calculator for your town. Your contractor and your city or county price land, foundation, site work, permits and fees separately.

Starting prices are the same statewide, from $276,800 for Walker. Rock Springs delivery adds nothing. Casper adds about $2,300 per truckload, or $4,600 for two modules; Cheyenne adds about $2,800 per truckload. Your city or county’s charges also differ. Casper charges $280 for plan checks and $35 each for water and sewer permits. Cheyenne adds $400 for residential enhancement and $1,029.82 per unit. Rock Springs charges a flat $1,100 building permit.

Not a full-size Irontown plan: Walker starts at $276,800. MCO’s modular ADU homes start lower: Mysa 500 offers one bedroom and 497 sq ft from $142,600. Both include delivery and set for 250 miles. Your city or county decides whether zoning allows a smaller home on your lot. Where your county has no zoning, recorded covenants decide.

No. Irontown finishes modules in its factory, then delivers and crane-sets them. Aspen offers 1,255 sq ft from $296,700; Donner 1300 offers 1,315 sq ft from $330,900. The two story Bunkhouse offers 1,588 sq ft from $379,300. Delivery includes 250 miles, reaching Afton and Thayne in Star Valley. Beyond that, each truckload adds about $600 to Jackson, $2,300 to Casper and $2,800 to Cody.

Snow load is the weight your roof must carry, in pounds per square foot (psf). Published figures include Cody’s 20 psf, Jackson’s 93 and Natrona County’s 100 at 6,000 ft and above. During pre-construction, Irontown engineers your home for your city or county’s figures. Green River, Sheridan and Gillette specify winds of 115 miles per hour. Earthquake design levels around Jackson, Star Valley and Evanston are higher, and your stamped plans carry them.

Once set on its permanent foundation, your home is a permanent building and real property, not a vehicle or titled manufactured home. Your county assessor values it with your land. Homeowner exemptions have residence and filing rules. Buyers use construction loans converting to mortgages, as with site-built houses. Your lender decides whether conventional, Federal Housing Administration (FHA) or Department of Veterans Affairs (VA) programs apply.

Some lots have no truck route or crane pad, and wind or winter can set the delivery window. Irontown’s feasibility review checks both before you commit. The two Berkeley plans are 15 ft wide and five cities set a 24 ft width rule. Ask first; the other plans are at least 24 ft wide. Your contractor and your county price the foundation, site work and fees, so the total takes a few calls. This page’s budget list shows what to ask for. The project runs in phases over several months, not one purchase. This page’s timeline shows who does what.

Sometimes. Your carrier applies for an oversize permit, collects it at the port of entry and travels in daylight. It uses a pilot car if the permit requires it. Interstate 80 closes to light, high-profile loads in strong wind, and mountain passes have seasonal limits. Yellowstone National Park is not a delivery route. Irontown plans delivery during feasibility around your foundation readiness. A winter or windy-season delivery can wait for a weather window.

Fremont, Big Horn, Converse, Goshen, Johnson, Crook and Weston have no zoning or building code. Twenty of Wyoming’s twenty-three counties issue no house building permit outside cities. There, nobody inspects the house; Irontown still uses the International Residential Code and stamped plans. You need a legal parcel, applicable floodplain compliance and any listed county zoning or land-use certificate. Septic permission comes from your county program or the Department of Environmental Quality (DEQ). Wells need the State Engineer’s Office permit before drilling; state electrical wiring permits remain.

You can walk through modules on the line and see the finish series at the Spanish Fork factory, an hour south of Salt Lake City International Airport, with direct flights from Jackson, Casper and Cody. By road it is two hours from Evanston, three and a half from Rock Springs, five and a half from Jackson and seven from Casper. Irontown’s photo pages show homes in the neighboring states, and this page shows the Misty Mountain Court home in Montana inside and out. Contact MCO to arrange a visit.

Your starting price includes finished Designer modules, engineered stamped plans, delivery for 250 miles, the standard crane and set, and the warranty. Budget separately for land, foundation, site work, stitch, utilities, septic and well, permits and fees, engineering, and tax shown on your quote. Your contractor and your city or county price those items. MCO does not quote them.

Walker and Aspen offer basements; Berkeley 2 offers a garage level; Bunkhouse offers an upstairs bath. Phase 2 includes limited design customization. Your quote prices Designer, Modern, Balance or Rustic finishes, with Irontown’s interior designer helping during pre-construction. Your contractor builds garages, porches and decks outside the plan on site.

Irontown builds, ships and sets your modules. Your contractor builds the foundation to the structural engineer’s plans and handles the stitch and finish. Irontown’s feasibility review includes contractor support. Irontown has connections to some general contractors, so contact MCO to see whether we can recommend one in your area.

Irontown’s phases total about five to seven months. Feasibility takes 1 to 2 weeks; pre-construction and engineered plans, 2 to 3 months; building, shipping and setting, 12 to 16 weeks. Your city or county reviews permits alongside pre-construction. Where the Fast Track Permits Act applies, complete applications need decisions within 30 calendar days. Cheyenne and Laramie County publish about 10 business days for review comments. Wind closures and winter affect delivery; your contractor also needs time to finish your site.

Rules were read in September 2026. This summary is not legal advice or approval. Rules change, and local offices decide how they apply. You are responsible for confirming zoning, permits, impact fees, septic approval and code compliance for your parcel, plan and use before ordering. MCO helps and advises but takes no responsibility for those matters.

Request your Wyoming home quote

Tell MCO your lot location, county and preferred plan. Add your nearest town, bedroom needs and any delivery or site details you already know so we can discuss the home, transportation and next steps.

Prefer to talk? Call or text +1 (307) 200-8752, Monday to Saturday, 9am to 5pm PST, or email support@mycozyoutdoors.com.





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