Great Western Contracting

Most Builders, Build to Code. As Your ICF Home Builder of Gillette WY, We Build to Last.

Your property deserves a builder who plans for Campbell County conditions, not just minimum standards.

  • Licensed, bonded, and insured
  • Authorized Nudura ICF installer and Lester Buildings dealer
  • Award-winning historic preservation craftsmanship
  • Straight answers before any commitment
  • Responds within one business day
CALL TO PLAN YOUR GILLETTE PROJECT

Ready to Build? Let's Talk.

Tell us about your land, your project, and what you want to build. Great Western Contracting will get back to you within one business day.

  Great Western Contracting

Most Builders, Build to Code. As Your ICF Home Builder of Gillette WY, We Build to Last.

Your property deserves a builder who plans for Campbell County conditions, not just minimum standards.

  • Licensed, bonded, and insured
  • Authorized Nudura ICF installer and Lester Buildings dealer
  • Award-winning historic preservation craftsmanship
  • Straight answers before any commitment
  • Responds within one business day

Ready to Build? Let's Talk.

Tell us about your land, your project, and what you want to build. Great Western Contracting will get back to you within one business day.

icf home builder sheridan Wy construction project
Reviewing plans for the ICF home builder Sheridan WY project

Built on Experience. Backed by Results.

Wyoming's Climate Demands More Than a Standard Builder

“The right ICF home builder for Wyoming land is the one who has worked it. Who knows the frost depth, the wind, the fire risk, and what it takes to build something that holds up for decades.”

You are about to make one of the biggest decisions of your life on one of the best pieces of land in the country. The builder you choose will either protect that investment or complicate it. Great Western Contracting has spent 30 years across Northeast Wyoming earning the kind of trust that only comes from doing the work right, telling the truth before the contract is signed, and standing behind every project long after the crew leaves the site.

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30+

Years of Wyoming Construction Experience

  • Family owned and operated, rooted in Sheridan County
  • Award-winning historic preservation craftsmanship
  • Licensed, bonded, and insured
  • Fiduciary mindset: your best outcome, not the highest contract

What Clients Are Saying About Great Western Contracting


Client Testimonial

"Jason helped us with the commercial permitting process and inspections as a design/build commercial contractor. My family was involved in every stage and together, we were able to keep costs down and keep things progressing." 


Rebecca Mancini, Owner of Bino's Corner


Client Testimonial

"I have been around the construction industry more than 50- years. Jason is one of the most knowledgeable people I have met over that time. He is honest, he prices things accordingly, and he is very creative in his design work." 


Dan Keller, Cottage Grove LLC,


Client Testimonial

“We looked at several builders before we found Jason. What stood out right away was that he listened and was completely upfront about what things would cost. He never pushed us toward anything we did not need. The home turned out better than we imagined, and our heating bills are a fraction of what we paid in our old house. We tell everyone we know.”


— Sheridan County homeowner, ICF custom home


"Jason helped us with the commercial permitting process and inspections as a design/build commercial contractor. My family was involved in every stage and together, we were able to keep costs down and keep things progressing." 


Rebecca Mancini, Owner of Bino's Corner


"I have been around the construction industry more than 50- years. Jason is one of the most knowledgeable people I have met over that time. He is honest, he prices things accordingly, and he is very creative in his design work." 


Dan Keller, Cottage Grove LLC,


Building in the Energy Capital of Wyoming Takes a Different Kind of Builder

Gillette wears its identity proudly. The Energy Capital of the Nation. Coal and oil and gas money built this town, and the people here know what it means to work hard and expect things to last. When you build in Campbell County, you are not building for show. You are building for the long haul, on high plains land where the wind comes across open ground without a windbreak and the winters can drop forty below without much warning. As your ICF home builder, we plan every project around those real conditions. We have worked in this region long enough to know that a building planned for milder conditions will show its weaknesses here fast.


Whether you are building a forever home on acreage east of town, relocating to Wyoming and starting fresh on land you have already chosen, or investing in a property you plan to pass down, the planning conversation matters more than anything else. Being a custom home builder serving Gillette WY, we start every project by understanding what you need the building to do, what the site demands of it, and what your goals look like twenty years from now. That conversation costs nothing. Getting the foundation of the project wrong costs everything.

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    Campbell County is attracting buyers who want Wyoming land without Jackson Hole prices. The acreage is real, the taxes are low, and the lifestyle is genuinely open. If you are coming from out of state and planning from a distance, working with an ICF concrete home builder who manages the process clearly matters more than it does anywhere else. We communicate without being chased down. We deliver what we said we would.


LET'S GET STARTED

 ICF Concrete Homes Built for Campbell County Winters and Wyoming Fire Risk

If you are building a home in the Gillette area, the wall system is one of the decisions that will affect every day you live there. Most buyers do not think about it until the first winter utility bill arrives. A standard framed wall tops out at R-19 before thermal bridging through the studs reduces that further. It offers roughly 45 minutes of fire resistance. As a custom home builder, we help you understand what the ICF wall system delivers differently: R-26 continuous insulation with no thermal bridging, an airtight envelope, and a minimum 4-hour fire resistance rating. Those specifications change how the building performs for every decade you own it.


The wall system difference shows up before the first heating bill arrives. A home built with the ICF system holds temperature overnight without the heating system cycling constantly. It stays quiet when wind crosses open ground. The airtight envelope keeps the cold outside where it belongs. We bring the Nudura system to every custom home project with hands-on experience from real Wyoming builds. The exterior can be finished in stone, stucco, siding, or wood. The home looks exactly like the one you have been picturing. The difference lives inside the wall.


For buyers thinking about fire risk, the ICF wall rating matters in Campbell County the same way it matters in Sheridan County. Wildfire risk across Northeast Wyoming is documented and has been rising. As a concrete home builder, we help you understand how the wall system connects to your insurability and your long-term ownership costs. Some homeowners have seen meaningful insurance savings because of the fire-resistant wall assembly. That conversation is worth having before the plans are drawn.

Post Frame and Pole Barn Buildings Across Campbell County

Campbell County landowners know the value of a building that works as hard as the operation it supports. If you own acreage outside Gillette and want living space connected to a shop or working area, a barndominium is one of the most practical answers available. Being a barndominium builder serving Gillette WY, we plan these projects around how your property actually works. Not a standard floor plan rotated to fit the site. The door heights set for the equipment you own. The living quarters planned as a home, not an afterthought. The whole building oriented for the wind and snow conditions on your specific piece of ground.


When you need a working structure without the living quarters, a pole barn gives you more open span space per dollar than almost any other building method. Clear span interiors mean you can park, store, and work without columns getting in the way. As a pole barn builder, we walk the site before the layout is set. The high plains east of Gillette have wind exposure that affects how a building needs to be oriented and engineered. Getting that right during planning is free. Fixing it after the posts are in the ground is expensive.


Rural buyers in this region are choosing barndominiums because they solve a problem that a standard house and a separate shop cannot. Everything connects. The work and the living are on the same property under one roof, and the layout can be planned around how you actually move through your day. When we discuss your barndominium build, we help you figure out where the transition between living and working belongs, how the whole structure connects to the site, and what the planning needs to account for before anything is ordered. That early conversation prevents the regrets that show up after the building is finished.


As an authorized Lester Buildings dealer and award winning post frame builder, we bring an engineered building system backed by the only lifetime structural warranty in the wholesale post frame industry to every project in this region. Every Lester project is configured to the specific snow loads, wind loads, and post embedment requirements of your site. That engineering is specific to your property. It is not pulled from a generic spec sheet written for a different part of the country.

Commercial Construction for Campbell County Business Owners

A commercial building in an energy industry town has to handle hard daily use. Heavy equipment. Trucks that need real turning room. Floors rated for serious loads. A structure that performs through Wyoming winters without becoming a maintenance problem that cuts into your operating budget. As a commercial contractor, we bring licensed, bonded, and insured commercial construction capability to the Gillette area. We help you figure out which construction method fits the building before the design gets too far along to change it.


ICF concrete makes sense for commercial buildings where fire resistance, sound control, and long-term energy performance drive the ownership decision. Post frame makes sense when large open spans, fast build timelines, and practical cost per square foot are the priority. Some commercial projects use a combination of both. Being a commercial builder, we help you run that comparison honestly based on your specific project. The goal is a building that serves your operation for decades, not a method that happens to be easiest to sell.


Commercial buyers check references carefully and expect a contractor who comes to the first conversation prepared. Licensing, bonding, and insurance documentation should be ready before you ask. We handle permit coordination, inspection scheduling, and site-specific insurance as standard parts of every commercial project. You should not have to manage those things yourself. We keep the project moving and keep you informed at every stage.

historic building restoration gillette wy

Historic and Specialty Restoration in Campbell County

Not every project in Campbell County is new construction. Older commercial buildings, family properties, and structures that carry real history sometimes need more than a standard renovation. They need someone who understands what the building has been through, can read what is salvageable versus what has already failed, and approaches the work with the patience that genuine restoration requires. As a building restoration contractor serving Gillette Wyoming, we bring award-winning preservation craftsmanship to projects where the details matter as much as the finished result.


Restoration work in older buildings almost always reveals more than the surface shows. Framing that has shifted. Past repairs that were done quickly and created new problems. Materials that cannot be matched without real skill. As a building restoration contractor, we start every restoration project the same way: understanding what the building has before recommending what it needs. That means a realistic picture of scope and cost before any commitment is made.

Which Building Method Is Right for Your Project?

Choosing the right construction method has real long-term consequences for safety, comfort, energy costs, and insurability on Campbell County land. Wildfire risk in Sheridan County is higher than 92 percent of all U.S. counties according to the U.S. Forest Service, and the open high plains around Gillette carry their own wind and weather exposure. Winters drop well below zero. A home planned without those realities in mind starts at a disadvantage from day one. This comparison is not about steering you toward one answer. It is about giving you the information you need to make the right choice for your land, your use, and how long you plan to own it.

Factor Standard Stick Frame ICF Concrete Home Lester Post Frame
Fire Resistance Approx. 45 minutes Minimum 4-hour rated wall, 6-inch concrete core Engineered metal and post system supports fire-conscious design
Wind Resistance Standard code loads Up to 250 mph (Nudura specification) Engineered for open spans and rural site conditions
Insulation Max R-19, thermal bridging through studs R-26+ continuous, no thermal bridging, airtight envelope Insulation packages available for finished and working spaces
Energy Performance Higher heating costs in cold climates 30 to 58 percent reduction in heating and cooling demand Efficient for large buildings when properly insulated
Sound STC 35 to 40, wind and exterior noise audible STC 50+, concrete mass reduces exterior noise significantly Varies by insulation and interior finish
Best Fit Standard residential builds Forever homes, fire-resistant retreats, energy-efficient custom homes Ranch shops, equipment buildings, stables, garages, barndominiums

A forever home buyer building on acreage near Gillette has different priorities than a rancher who needs a working shop on Campbell County land. An out-of-state buyer focused on long-term energy costs and durability may find the ICF concrete wall system is the clearest answer. A rural landowner who needs practical open-span space may find a Lester post frame building is exactly right. Great Western Contracting helps you work through that comparison before any money is committed. If you are weighing options and want to know whether an ICF home builder is the right fit for your project, that conversation costs nothing. Use the build cost calculator to explore a starting range.

Why Homeowners Choose Great Western Contracting

Straight answers before any commitment

Trusted across Sheridan County and Northeast Wyoming

Authorized Nudura ICF installer and Lester Buildings dealer

Award-winning preservation craftsmanship

Your best interest, not the highest contract

Fast Response.Responds within one business day

Built on Honesty. Backed by 30 Years of Experience.

Built in Gillette. Part of the Energy Corridor.

Great Western Contracting is based in Sheridan and has been working across Northeast Wyoming for 30 years. Campbell County is part of that region, and the work we have done there reflects the same standards we bring to every project closer to home. As a pole barn builder Gillette WY and custom home builder serving the broader region, we understand what makes a project on open Campbell County ground different from one on a sheltered Sheridan County lot. Wind exposure, site access, soil conditions, and rural utility planning all look different out here, and those differences shape how a project should be planned from the first conversation.


Jason Szewc has spent his career building across this region, earning the kind of reputation that only comes from doing the work right and standing behind it after the crew leaves the site. The Historic Society Award for Preservation, the work on some of the most significant properties in Northeast Wyoming, and 30 years of honest project delivery across every building type we offer are what you are getting when you call Great Western Contracting. As a commercial builder and custom home builder serving Campbell County, we bring that same standard to every project in this region regardless of size or type.

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Site-First Planning

We assess your land, your access, and your site conditions before a single plan is drawn. Your property shapes the project, not the other way around.

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Licensed, Bonded, and Insured

Full documentation ready before work begins. No chasing, no guessing, no surprises on credentials.

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Experienced Team

From design and planning through the final walkthrough, you have a skilled crew with decades of Wyoming construction experience behind every decision on your build.

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Built for Wyoming Conditions

Every project is engineered for the specific snow loads, wind exposure, and frost depth of your site. Wyoming is not a mild climate and we do not build like it is.

Ready to Build? Let's Talk.

Tell us about your land, your project, and what you want to build. Great Western Contracting will get back to you within one business day.

Ready to Build? Let's Talk.

Tell us about your land, your project, and what you want to build. Great Western Contracting will get back to you within one business day.

Ready to Build Something That Lasts in Campbell County?

The best time to ask questions about a project in the Gillette area is before the design is locked in. Wall systems, floor specs, site placement, and construction method are all easier and cheaper to get right during planning than to fix after construction begins. As a custom builder serving this region, we start every conversation by understanding the land, the use, and what the building needs to do for years after we leave the site.


Bring the property and the goal. We will help you figure out the rest. Contact us today to get started.

Frequently Asked Questions About Building in Gillette WY


See some common questions and answers below, or call us at 307-667-0672

  • Is ICF construction worth it for a home in Campbell County?

    For most buyers building a long-term home in Campbell County, the answer is yes. The upfront cost of ICF construction carries a modest premium over standard framing, typically three to ten percent more for the structural shell. What comes with that premium changes the comparison significantly. A minimum 4-hour fire resistance rating on every exterior wall. R-26 continuous insulation with no thermal bridging. An airtight envelope that holds temperature overnight in ways a standard framed wall cannot. A home that stays noticeably quieter when wind moves across open ground. As a concrete home builder, we help you run that comparison honestly using your specific project, your site, and your long-term ownership picture rather than national averages that may not reflect what building in this region actually looks like.

  • What should I look for when hiring a custom home builder in Campbell County?

    Start with verified experience in the specific type of construction you need. Ask to see completed projects similar to yours and speak directly with past clients rather than relying on testimonials the contractor selected. Ask how they handle the planning conversation before any commitment is made, and pay attention to whether they are asking the right questions about your land, your goals, and your long-term plans. We approach every first conversation as a planning session, not a sales call. Licensing, bonding, and insurance documentation should be available immediately, not something you have to ask for twice. A builder who treats the first conversation as an opportunity to understand your project rather than close a deal is worth taking seriously.


  • Can an ICF home be designed in any architectural style?

    Yes. The ICF wall system is structural and insulating. What the building looks like from the outside is entirely a design decision. Stone, brick, stucco, siding, wood accents, and virtually any exterior cladding system works over an ICF wall. The interior is framed and finished identically to any custom home. Drywall, trim, flooring, cabinetry, and all interior finishes are the same. The difference is in the wall behind the finish, and that difference shows up in your utility bills and your comfort every day you live in the home. As a concrete home builder, we can show you finished ICF homes in a range of architectural styles so you can see exactly what the construction method looks like when it is done well before you commit to it.


  • How does barndominium financing work in Wyoming?

    Financing a barndominium depends on how the structure is classified and which lender you are working with. A barndominium with finished living quarters that meets residential standards can qualify for construction-to-permanent financing and other conventional home loan products in many cases. The key is how the building is described and appraised, and lenders who are familiar with rural Wyoming properties and post frame construction are more likely to have programs that work for this structure type.  Great Western Contracting has worked with buyers across Northeast Wyoming on this question and can point you toward lenders in this region who understand what you are building. Starting the financing conversation early, before the design is finalized, gives you the most flexibility and prevents the design from getting ahead of what your financing will support.

  • What documentation should I expect from a commercial contractor?

    In the first conversation with a commercial contractor you should be able to tell immediately whether you are dealing with a licensed, bonded, and insured operation. A professional commercial contractor does not make you ask for that documentation. It is a baseline fact about how the business operates, and any hesitation around providing it is worth paying attention to. At the project level, once construction is underway, you should expect permits to be pulled, site-specific insurance certificates to be in place, and inspections to be managed proactively. You should not have to track those things down yourself. Great Western Contracting handles all of that as a standard part of every commercial project because that is what a serious commercial buyer deserves from their contractor.


  • What site conditions matter most for a pole barn in Campbell County?

    As a pole barn builder Gillette WY who has worked on rural sites across this region, Great Western Contracting looks at several site factors before any layout is set. Wind exposure on open Campbell County ground is real and affects how the building is oriented and how the framing is engineered. Frost depth varies across the region and determines how posts need to be set to avoid movement from freeze-thaw cycles. Drainage around the foundation and at the main entrance affects daily usability more than most people realize until they are dealing with a mud situation every spring. Rural road access determines whether concrete trucks and material deliveries can reach the site during the build window, and that needs to be assessed before a schedule is set. We walk the site before the layout is finalized because all of those conditions are easier to plan around than to fix after construction is done.


  • How long does post frame construction take in Wyoming?

    Post frame construction timelines depend on the size and complexity of the building, permit timelines, material lead times, and the Wyoming construction calendar. Concrete work is temperature-dependent and needs to be scheduled within the reliable pour window that runs roughly mid-April through October. Post frame construction itself is generally faster than concrete-heavy methods because it is less dependent on curing time and can continue through weather conditions that would pause other types of work. Great Western Contracting gives you a realistic timeline estimate during the planning stage based on your specific project with Wyoming weather conditions factored in from the start. If you are planning around a firm date, whether that is a business opening, a move-in, or a seasonal deadline, the construction timeline is one of the first things to establish so everything downstream can be scheduled around it.

  • What should I expect when restoring an older building in Campbell County?

    Older buildings almost always reveal more than the surface shows once work begins. Framing that has shifted over decades. Past repairs that were done quickly and are now creating new problems. Materials that cannot be matched without real skill and sourcing effort. A building restoration contractor worth hiring will prepare you for that reality during the planning conversation rather than presenting it as a surprise once the walls are open. Great Western Contracting starts every restoration project by understanding what the building has been through before recommending what it needs. That means a realistic picture of scope and cost before any commitment is made, so you are making decisions based on honest information rather than optimistic estimates that grow once work begins.


Start Planning Your Project Today

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