Steel Frame Barndominium: Cost, Sizes, and What Buyers Need to Know

People often toss around the word "gauge" when discussing metal buildings, but few stop to consider what it really means. For steel, its gauge is a system of determining how thick it is. The smaller the number, the thicker the material.

What Is Gauge?

Most metal buildings utilize 14-gauge steel for their framing. It’s light, sturdy, and can hold its own in most scenarios. However, some environments with higher wind speeds and snowfall demand thicker 12-gauge framing to carry the load and pass local building requirements.

And while you might not notice much of a difference in performance at first, that beefier framing makes it a lot harder for nature to bend or twist your structure out of shape.

Key Highlights

• 12-gauge = thicker and stronger
• 14-gauge = good for most small to mid-size builds
• Lower gauge = better wind and snow performance
• 12-gauge holds shape longer under stress
• Often comes with a better warranty
• Price bump is small compared to the upgrade in strength

Steel Gauge Chart

How Gauge Impacts Loads

Thicker framing doesn’t just sound tougher. It is tougher. Heavier steel stands up better to snow buildup, hard gusts, and the added stress from longer spans.

Engineers run the numbers for wind and snow loads based on ASCE 7 standards. Using this system, buildings can be rated for anywhere from 115 to 170 mph winds and 20–60 psf snow loads.

The local requirements for wind and snow loads depend on location, open exposure, and roof pitch. For example, a building sitting on a hill or near the coast deals with more pressure than one behind trees.

Upgrading to 12-Gauge Framing

At what point should you consider upgrading?

• High Wind Speeds

If your metal building will sit in an area with high wind speed calculations, you may need to upgrade to thicker framing to prevent swaying or failure.

• Heavy Snow Regions:

If you expect to see your fair share of deep snows this winter, upgrading your framing thickness is a smart move.

• Longer, Bigger Buildings:

Longer spans put more stress on the frame of your pre-engineered metal building.

• Certification Needs

Higher wind or snow ratings often call for thicker 12-gauge.

• Lower Maintenance:

Thicker steel can last longer and require fewer repairs over the course of its life.

Cost and Warranty Changes with Framing Upgrades

You can expect a small price increase when you upgrade from 14-gauge to 12-gauge framing. You pay for thicker steel, heavier anchors, and reinforced braces to match it. Usually, you’re looking at around 10–15% more on the framing side.

However, that extra spend often gets you a longer rust-through warranty, sometimes 25 years instead of 20. The thicker galvanizing takes longer to wear down, especially in damp or coastal areas.

So, while the up-front cost stings a little, you’re getting fewer repairs, less movement, and a frame that won’t quit early. In the long run, it’s usually worth every bit.

Frequently Asked Questions about Framing Gauges for Metal Buildings

Do you have questions about framing gauge, and which thickness is best for you? Below, we’ve answered some of the questions we see on this subject the most:

Is 12-GA stronger than 14-GA?

Answer: Yeah. It’s thicker, heavier, and stiffer under load.

What’s the real thickness difference?

Answer: 12-ga steel is about 0.1046 inches thick, while 14-ga runs around 0.0747 in.

Does 12-GA automatically mean better wind or snow ratings?

Answer: Not by itself. The full design, including anchors, trusses, and layout, plays a role. But thicker framing helps you hit higher numbers.

Does the 20-year rust warranty only cover 12-GA?

Answer: Usually, the heavier gauge gets longer coverage. Some 14-ga options still offer 20 years, but 12-ga often goes a few years beyond that.

A landowner in Tennessee ordered a 40x60 steel frame barndominium last year. Shell was delivered and installed in about three weeks. The total project, from ground break through interior rough-in, ran closer to seven months.

That gap between shell timeline and total project timeline is where buyers most often get surprised. The steel structure is the fast part. Site prep, the concrete slab, permits, and interior finishing are where the calendar stretches, and where the budget adds up beyond the shell quote.

We build and install steel barndominium shells across the country. What follows covers how they're sized, what they cost, how steel compares to wood frame construction, and what your site needs before your building arrives.

Key Highlights

• A steel frame barndominium from us is the complete exterior shell: framing, roof, wall panels, and any doors and windows you spec into your order. Interior finishing is a separate project on your end.
• Common footprints run from 30x50 to 60x80. Most buyers land between 40x60 and 50x80 for a combined shop-and-living build.
• We engineer-certify our steel shells to meet local wind and snow load requirements across most U.S. states.
• Shell cost varies by size, roof style, certification, and add-ons. Foundation, site prep, permits, and interior work are separate budget items.
• Financing and rent-to-own options are available for qualified buyers.
• Call (208) 572-1441 to price out your build, or design your barndominium shell at EngineeredMetalBuildings.com.

What a steel frame barndominium shell actually includes

The shell is the structure, not the finished home

When you order a steel frame barndominium from us, you're ordering the exterior structure. That's the steel framing, metal wall panels, roof system, and any openings you specify, including roll-up doors, walk doors, and windows. We deliver it and install it on your prepared site.

Interior finishing is a separate project. Electrical, plumbing, insulation, interior wall framing, drywall, and flooring all happen after the shell is standing and closed in. Most buyers hire that work out to a contractor. Some do it in phases over a year or two. The sequence matters: shell first, everything else after.

Shell pricing versus total project cost

The shell quote and the total project budget are two different numbers. Buyers who treat them as the same number run into problems.

Your full project budget includes the shell, site grading, a concrete slab or other foundation, permit fees, engineering drawings if your county requires them, and interior finishing costs. Some of those line items are hard to estimate without knowing your county and your specific site. But understanding that they exist as separate budget categories is the most practical thing to have straight before you start pricing.

Common sizes and layout configurations for metal barndominiums

Shop-forward layouts

Shop-forward barndominiums put most of the square footage into the work area and keep the living section compact. A 40x60 building with a 40x40 shop and a 40x20 living area is a common starting point for landowners whose primary need is workspace, with on-site sleeping quarters as a convenience.

Farmers, ranchers, and contractors tend to go this route. You get a genuinely oversized shop for how you actually use it and keep the residential side functional without driving up the total build cost.

Living-forward layouts

Living-forward setups flip the ratio. A 50x80 with a 50x60 residential section and a 50x20 shop or utility bay works well for buyers who want a full-size home with a serious attached workspace. More square footage goes to the living side, and the shop is sized for a realistic personal use rather than a full commercial operation.

Neither configuration is objectively better. It depends on what you're actually building the structure for. Call (208) 572-1441 and walk us through your use case. We can size the footprint around what your property and your plans need, not a generic default.

What does a steel frame barndominium cost?

There's no fixed price we can publish here that means anything. Steel pricing shifts with the market, and certification requirements vary enough by region that a per-square-foot estimate without knowing your state and county is a rough guess at best. Call (208) 572-1441 for a current quote on your specific size and location.

What we can tell you is what drives the number up or down.

The biggest cost drivers

Size is the clearest factor. Larger footprints cost more because there's more material, more framing, and more roof. A 60x80 shell runs noticeably higher than a 40x60.

Roof style is the next significant variable. Vertical roof panels are the right choice for most applications, particularly in areas with real snow or significant rainfall. They handle weather better than regular-style or horizontal panels over the long run. They also add to the base price. If you're in a high-snow or high-wind area, the vertical roof isn't optional. It's what the building needs.

Engineer certification is a line item most buyers need. If your county requires stamped engineering drawings for a building with residential occupancy, those drawings cost money. Counties vary significantly. Some rural parcels have almost no oversight. Others have full residential permit processes. Knowing your county's requirements before you order saves time and budget surprises. Our post on how building codes and snow loads affect cost covers this in more detail.

What the shell price doesn't cover

Your shell quote covers the structure. The rest of your project budget still needs to account for:

• Site preparation: grading, leveling, and drainage
• Foundation: usually a poured concrete slab, sized and reinforced for your building footprint and local soil conditions
• Permit fees and plan review, which vary by county and occupancy classification
• Interior finishing: insulation, rough-in electrical and plumbing, drywall, and flooring

None of that is a hidden cost. It's just not in the shell quote. Buyers who budget only the shell price and skip these line items run into problems at every stage after the building goes up.

Steel frame vs. wood frame: the honest tradeoffs

Wood-frame barndominiums exist and some people prefer them for interior finish flexibility. Here's how the two construction methods compare on the factors that matter to most buyers:

Steel wins on durability and long-term maintenance costs. A shop that's doing real work, storing equipment, running power tools, housing livestock in an adjacent bay, takes on a lot of wear over decades. Steel handles that better than wood in most climates, and it's substantially better in termite-heavy states like Alabama, Georgia, and Florida.

What your site needs before installation day

Your land needs to be graded and level before we arrive. The building pad should be clear and accessible by delivery equipment. On rural properties, this matters more than people expect. A soft gravel drive that handles a pickup truck can create real problems for a flatbed and a forklift, especially after rain.

If you're doing a concrete slab, it should be fully cured before we schedule installation. We won't install on fresh concrete. Get the pour done early, let it cure completely, and have the pad ready before you call to lock in your install date.

Our site preparation guide covers exactly what the crew needs when they show up. Read it early in your planning process, not the week before delivery.

Financing and rent-to-own for steel barndominiums

If paying for the shell upfront is the hold-up, we have options. Financing is available through Acorn Finance. Rent-to-own lets you get your building on the ground with monthly payments instead of the full purchase price at signing.

Call (208) 572-1441 and we can walk through what payment structures are available and what the qualification process looks like. Financing details are also available on the financing page.

A steel frame barndominium is a practical, durable option for landowners who want combined shop-and-living space built to handle real use over decades. The shell is the fast, predictable part of the project. Site prep, the slab, permits, and interior finishing take more time and more planning.

If you have a general sense of your footprint and your layout, the fastest next step is to design it at EngineeredMetalBuildings.com or call (208) 572-1441. We'll work through the options, quote your shell, and walk you through what the site needs before your build date.

You know you need a carport. You've figured out the size, roughed out a spot on your property, maybe even started looking at roof styles. But then you hit the open carport vs enclosed metal carport question and stall out. It's a legitimate fork in the road, and the wrong choice costs you either money you didn't need to spend or protection you realize you needed after the first hard winter.

We build both. Here's exactly how they differ, what each one is built to do, and how to figure out which one fits your situation.

Key highlights

• An open metal carport has a steel roof and frame with no side walls. An enclosed carport adds steel panels on the sides and ends, plus a door or roll-up entry.
• Open carports cost less upfront and go up faster. They're a solid choice for covered parking in mild or dry climates.
• Enclosed carports protect against wind-driven rain, dust, theft, and temperature swings. They're closer in function to a garage than a covered parking spot.
• Partially enclosed carports let you close off two or three sides and leave one open. A lot of buyers land here because it balances airflow with protection.
• Both open and enclosed carports come in vertical roof, horizontal roof, and A-frame styles from Engineered Metal Buildings.
• Permit requirements often differ between the two. Enclosed structures are more likely to trigger a local permit check. Your county building department has the final word.
• Ready to choose? Call us at 208-572-1441 or design your building at engineeredmetalbuildings.com.

Need help choosing the right carport setup? Explore our custom metal carports or call 208-572-1441 to talk through open, partially enclosed, and fully enclosed options.

What makes a carport "open" vs "enclosed"?

Open carports: a roof, a frame, and nothing blocking the sides

An open metal carport is exactly what it sounds like. You've got a steel roof supported by vertical legs. Nothing on the sides. Nothing on the ends. Wind, air, and light pass through freely.

That's a feature, not a flaw, depending on what you're parking under it. Open carports let moisture evaporate, prevent heat buildup in warmer months, and give you easy pull-through access from any direction. They're widely used for cars, trucks, farm equipment, utility trailers, and boat storage in areas where the main threat is sun and rain from above, not wind-driven weather from the sides.

Our metal carports start with this open configuration and go up from there.

Enclosed carports: steel panels, walls, and a real entry point

An enclosed metal carport has the same roof and frame as an open carport, with steel panels covering the sides and at least one endwall with a door or roll-up opening.

Some enclosed carports are fully closed on all four sides. Others are closed on three sides with one end left fully open for drive-through access. The walls are the same 14-gauge steel used in the frame, so you're not just adding a visual barrier. You're adding an actual weather barrier.

Functionally, a fully enclosed carport starts to look a lot like a metal garage. The practical difference is mainly the entry setup and interior height, though we can build enclosed carports with garage doors, walk-in doors, and windows if you need them.

Want to compare real layouts? Start with an open carport category, then compare enclosed options like the 20x20x7 Closed Carport before you finalize your design.

The real-world difference in protection

A roof overhead keeps hail off your hood and sun off your interior. That covers most of what people want from a carport in a calm climate.

But weather doesn't always come straight down. A Texas thunderstorm rolls in sideways. A Colorado wind event blows road grit under an open structure for six hours straight. A Florida afternoon storm dumps 3 inches in 45 minutes and half of it goes horizontal. Open carports handle vertical weather well. Enclosed carports handle everything else.

There's also the security angle. An open carport doesn't do much to discourage someone from walking up to your vehicle at 2 a.m. A locked enclosed carport at least slows that down. Tools, riding mowers, ATVs, and anything else that lives under the roof are much better protected behind a wall than exposed on all sides.

Temperature is another thing buyers don't always think about until it's too late. In direct southern sun, a car parked under an open carport still heats up significantly because radiant heat comes off the ground and surrounding surfaces. An enclosed carport with proper ventilation cuts that down. Same story in cold climates: side walls block wind chill from sitting on your engine block overnight.

Building for rough weather? Review EMB’s snow and wind load guidance before choosing between open sides, partial enclosure, or a fully enclosed carport.

When an open carport makes sense for your property

Go open when your primary goal is shade and rain coverage, and your climate cooperates.

Farmers pulling combines and tractors in and out of a covered spot all day long don't want to deal with doors. Open carports give you that fast, unrestricted access. Pull in from any direction, leave from any direction. Wide-span open carports work well for two or three pieces of equipment parked side by side.

Open carports also make sense when you're covering an RV seasonally and airflow matters. Moisture that gets trapped under a tight enclosure can work against you if you're not ventilating properly. An open structure around an RV lets it breathe while keeping UV and rain off the roof.

Budget is a real factor too. Open carports contain less material, which means lower cost. If you're covering a second vehicle or a utility trailer and you don't need security, an open carport is hard to beat on a dollar-per-square-foot basis.

Covering an RV, camper, or trailer? Compare RV carports or design your own RV cover with the 3D Building Estimator.

When an enclosed metal carport is the better choice

You need an enclosed carport when you're storing anything valuable enough to lock up, anything sensitive to weather, or anything that benefits from climate separation.

Classic cars and collector vehicles belong in enclosed structures. So do boats during off-season storage, motorcycles in states with hard winters, and work trucks loaded with equipment. Anything you'd feel uncomfortable leaving open on your property for a week should be behind walls.

If you're in a coastal area, the Great Plains, or anywhere with serious windstorm exposure, enclosed carports are worth the extra investment. Wind-driven rain isn't slowed down by an open frame. And once debris starts moving at 60 mph, open sides aren't doing anything to protect what's parked inside.

Contractors and small business owners often use enclosed carports as a combined parking and storage solution. Lock the roll-up door on the end, and you've got a secure workspace that doesn't require the full footprint of a commercial building. We build those in widths up to 40 feet and custom lengths. Call 208-572-1441 if you need something sized for commercial use.

Worth checking: your homeowner's insurance policy may rate vehicles differently based on storage type. Some carriers offer better rates for fully enclosed vs open carport storage. Your agent can confirm what applies to your coverage.

Need enclosed storage instead of basic cover? Compare enclosed carport layouts with our metal garages, or call 208-572-1441 for help choosing the right structure.

Open vs enclosed metal carport: side-by-side comparison

Ready to price both options? Use the 3D Building Estimator to test size, roof style, colors, doors, windows, and enclosure options before requesting your quote.

What about partially enclosed carports?

A lot of buyers end up here. Close off the back and both sides, leave the front open. Or close three sides and put a roll-up on the fourth. You get most of the weather protection of a fully enclosed structure with easier access than a traditional garage.

We build these regularly. A common setup is a carport with the two long sidewalls closed and both short ends left open for drive-through. This works well for long farm sheds, equipment storage, and RV covers where you need a clear front-to-back path without full enclosure on every side.

You can also do a combo unit: an enclosed section attached to an open lean-to on one side. The enclosed half holds your vehicles or valuables, the open lean-to gives you covered work space alongside it. That kind of layout solves a lot of problems at once.

If you're not sure what configuration actually fits your property and how you plan to use it, call 208-572-1441. We talk through these setups constantly and can help you decide before you commit to a design.

Need a mix of storage and open workspace? Browse ready-made metal building models or ask our team about a combo carport layout.

Ready to design your carport?

Build it your way at engineeredmetalbuildings.com or call 208-572-1441 for help choosing the right setup for your property.

Design before you buy. Use EMB’s 3D Building Estimator to customize your carport size, roof style, colors, doors, windows, and enclosure options online.

Want monthly payment options? Review EMB financing, check Rent-To-Own metal buildings, or call 208-572-1441 for help with your carport quote.

The bottom line on open vs enclosed

Open carports are built for easy access and basic overhead coverage. Enclosed carports are built for real security and all-weather protection. Most buyers who answer honestly about what they're parking and where they live end up knowing which one they need pretty quickly.

If you're still on the fence, a partially enclosed setup with two or three closed sides often splits the difference cleanly. And if you're in a high-wind or severe weather region, don't underestimate what adding walls does for the long-term condition of what you're protecting.

Design your carport at engineeredmetalbuildings.com or call 208-572-1441. We'll help you size it, configure it, and get it installed on your property.

Get your carport sized and quoted today. Start with our metal carports, compare enclosed options in the shop, or design your own building with the 3D Building Estimator.