40×40 Metal Building: Here’s Why It’s Probably Your Perfect Fit

Thinking About A 40×40 Metal Building?

If you are like most folks who end up with a 40×40 metal building, you are not just buying “a shed.”

You are buying breathing room.

Room for trucks and tractors, side gigs and hobbies, inventory and hay, the boat you keep meaning to use more, or the tools that keep disappearing into random corners of the property.

A 40×40 metal building gives you about 1,600 square feet of wide open, clear span space that can flex from garage to shop to barn to business as your life changes. That is why this footprint has become one of the most popular “sweet spot” sizes in the metal building world.

In this guide, we will walk through what a 40×40 metal building really is, what fits in it, realistic cost ranges for 2026 planning, when it is the right size and when it is not, and how to plan and design one with Get Carports.

What Is A 40×40 Metal Building, Exactly?

A 40×40 metal building is a steel structure that is 40 feet wide and 40 feet long, for a footprint of 1,600 square feet.

It is typically framed in steel, engineered for your local wind and snow loads, and finished with metal roof and wall panels. You can leave it open like a big carport, partially enclosed, or fully enclosed as a garage, barn, shop, or commercial space.

Quick Size And Square Footage Breakdown

• Width: 40 feet
• Length: 40 feet
• Footprint: 1,600 square feet

Common leg or wall heights: roughly 10 to 16 feet or more, depending on use and local codes

To picture it, imagine:

• Roughly the size of a modest small warehouse bay
• About the area of a mid-sized neighborhood grocery store aisle section
• Enough room to park three or four vehicles and still walk around them comfortably.

Common Building Styles In This Size

Most 40×40 metal buildings fall into one of these styles:

• 40×40 metal garage

Great for two to four vehicles, tools, and storage. Many people choose a fully enclosed garage with two or three roll up doors on the front and a walk-in door on the side.

• 40×40 metal shop

Popular for mechanics, fabricators, woodworkers, and side businesses. Clear span steel framing keeps the interior open so you can set up lifts, benches, and machines without interior posts getting in the way.

• 40×40 metal barn or ag building

Farmers and ranchers often use this size for equipment, hay, feed, and smaller livestock areas. A 40 foot width works well for pulling in tractors, balers, and implements.

• 40×40 combo building

One common layout is an enclosed garage on one side and open lean-to or covered parking on the other. This lets you protect daily drivers under cover while keeping the enclosed area for tools, toys, or higher-value equipment.

At Get Carports, we can design a 40×40 as a commercial metal building with tall roll-up doors, as a multi-vehicle garage, or as a barn with lean tos and extra doors. For example, a 40x40x16 commercial metal building can include a vertical roof, two 12×12 roll-up doors, a walk-in door, and bracing on every leg.

Common Building Styles In This Size

Most 40×40 metal buildings fall into one of these styles:

• 40×40 metal garage

Great for two to four vehicles, tools, and storage. Many people choose a fully enclosed garage with two or three roll up doors on the front and a walk-in door on the side.

• 40×40 metal shop

Popular for mechanics, fabricators, woodworkers, and side businesses. Clear span steel framing keeps the interior open so you can set up lifts, benches, and machines without interior posts getting in the way.

• 40×40 metal barn or ag building

Farmers and ranchers often use this size for equipment, hay, feed, and smaller livestock areas. A 40 foot width works well for pulling in tractors, balers, and implements.

• 40×40 combo building

One common layout is an enclosed garage on one side and open lean-to or covered parking on the other. This lets you protect daily drivers under cover while keeping the enclosed area for tools, toys, or higher-value equipment.

At Get Carports, we can design a 40×40 as a commercial metal building with tall roll-up doors, as a multi-vehicle garage, or as a barn with lean tos and extra doors. For example, a 40x40x16 commercial metal building can include a vertical roof, two 12×12 roll-up doors, a walk-in door, and bracing on every leg.

What Can You Actually Fit In A 40×40 Metal Building?

Vehicle And Equipment Examples

With 1,600 square feet, a 40×40 metal building can handle quite a bit. Here are some real-world scenarios:

Typical residential use

• Three full-size pickups parked side by side along the 40-foot wall, plus storage racks along the back
• Two pickups and a bass boat on a trailer, still with room for a workbench and tool storage
• A couple of daily drivers, a side-by-side or ATV, and a mower fleet for a lawn care side business

Farm and ranch use

• One mid-sized tractor with implements, a skid steer, and a hay trailer
• Round bale storage on pallets, plus feed, fencing supplies, and a small tack area
• Smaller livestock pens or kidding stalls along one side and open equipment space on the other

Contractor or small business use

• Work truck, enclosed tool trailer, and pallet space for materials
• Room for a small crew shop with benches and storage, plus a bay for indoor loading
• Inventory storage for e-commerce or local service companies

Industry examples from metal building suppliers show 40×40 shops used as mechanic bays, RV storage, barns, and light commercial spaces, all within this same footprint.

Layout Ideas For Garages, Shops, And Hobby Spaces

How you arrange that space matters more than the raw square footage. A few common layouts:

Three car garage with work zone

• Two 10×10 or 10×12 roll-up doors for daily vehicles
• One wider or taller door for a truck, lifted Jeep, or trailer
• Workbench and shelving along the back wall
• Small storage closet or future bathroom framed in a corner

Combo shop and toy storage

• Front third reserved for vehicles and UTVs, with three doors
• Back two thirds set as open shop area with central workbench island
• Loft storage over a portion of the space if the height allows

Hobby barn or “toy box”

• Boat and trailer on one side
• Classic car and motorcycle row on the other
• Central detail bay with good lighting and water stub outs

With clear span framing, you can move walls, racks, and benches over time without fighting interior columns.

When 40×40 Might Feel Too Small Or Too Big

A 40×40 metal building is generous, but it is not infinite.

It may feel too small if:

• You own larger farm equipment like combines, big articulated tractors, or big square balers
• You plan to park multiple RVs or buses indoors
• You want to combine a full commercial shop with a separate office and retail area inside one shell

In those cases, you may want to look at a 40×60 or larger footprint so you can keep drive lanes and work areas comfortable.

On the other hand, 40×40 can feel too big if:

• You just need a simple two car garage with light storage
• Your lot, HOA, or setbacks are tight
• Your budget is limited and you would rather start with a smaller building and expand later

If that is you, a 24×30, 30×30, or 30×40 metal building may accomplish your goals for less money and less concrete. Get Carports already sees strong demand for 30×40 buildings for garages, barns, and workshops, since that size balances current needs with future flexibility.

How Much Does A 40×40 Metal Building Cost In 2026?

No one can predict exact 2026 steel prices, but you can plan with solid ballpark ranges. Metal building costs move with steel markets, engineering requirements, and labor. Industry sources show that as of the mid 2020s, typical 40×40 metal building kit prices often fall somewhere between about 16 and 25 dollars per square foot for the building shell, depending on the design and supplier.
Installed or turnkey projects that include concrete, erection, and some finish work usually land higher per square foot.
Use the numbers below as planning tools, not locked in quotes. For an exact price from Get Carports, you will want a custom quote for your state, height, and options.

Shell Or Kit Cost Ranges

• Industry pricing guides and suppliers commonly show 40×40 metal buildings in these ranges:
• Basic 40×40 kit or shell
• Roughly 16 to 25 dollars per square foot for many standard packages
• At 1,600 square feet, that suggests a broad example range from about 25,000 up into the 40,000 range, depending on height, load requirements, and design complexity

Keep in mind:

Taller buildings cost more than shorter ones
Fully enclosed buildings cost more than open carports
Vertical roofs and heavier gauges cost more than lighter, regular style roofs

Get Carports provides real-time pricing through our online estimator and product pages, adjusted for your state and certification requirements, rather than one flat national price.

Installed Or “Turnkey” Cost Including Slab

When you add concrete, labor, and finish work, the total cost per square foot goes up.

• A typical 40×40 concrete slab at about 4 to 6 inches thick is often estimated in the range of 4 to 8 dollars per square foot for materials and labor. That puts many 40×40 slabs in the neighborhood of about 6,000 to 12,000 dollars, depending on soil conditions, local rates, and thickness.
• Some national pricing guides suggest that turnkey steel buildings, including kit, slab, delivery, and erection, often land between about 24 and 43 dollars per square foot for many use cases.

That implies that a completely finished 40×40 metal building with slab might reasonably fall in a wide planning band from the upper 30,000s into the 60,000 range or more, again depending on local codes, features, and interior finish.

Get Carports includes delivery and installation in the building price in many service areas, which can make your installed cost more predictable and lower than a pure “kit only” approach where you hire separate crews.

Key Factors That Move The Price Up Or Down

Several big levers affect your 40×40 price:

1. Location and local codes

• High wind or heavy snow zones often require certified buildings, heavier framing, and more anchors.

1. Building height and design

• Taller legs, clearances for RVs, and complex rooflines raise steel usage.
• Simple rectangles are more economical than irregular shapes.

1. Enclosed vs open

• Open carports are far cheaper than fully enclosed shops with roll up doors, windows, and wall sheeting.

1. Roof style

• Regular and horizontal A frame roofs are usually more budget friendly.
• Vertical roofs add strength and shed rain and snow better, at a higher price.

1. Gauges, insulation, and finishes

• Heavier 12 gauge framing and 26 gauge panels cost more than lighter options.
• Insulation, framed openings, interior liner panels, and upgraded doors all add to the total.

1. Site work and utilities

• Grading, fill, drainage, power, water, and septic are usually separate from the building quote.

Because of all of these variables, the best move is to treat online price ranges as a planning tool, then get a custom quote for your specific site and wish list.

7 Reasons A 40×40 Metal Building Is A Sweet Spot Size

1. Enough Room For Multi Vehicle Parking And A Real Workspace

Many metal building buyers start with “I need a three car garage” and end up with a 40×40.

With 40 feet of width, you can:

• Park three vehicles with space between doors
• Leave a full depth workbench or storage zone along a wall
• Add a small trailer, mower, or ATV without making the space feel tight

For farmers or contractors, the same footprint easily fits one or two work trucks plus a skid steer or tractor.

2. Clear Span Interior That Is Easy To Rearrange

Pre engineered metal buildings are often designed as clear span structures, meaning no interior load bearing posts interrupt the floor area.

That matters when your life changes:

• Today you may want an open shop.
• In five years you may frame in an office in one corner.
• In ten years you may convert half the building into a small business space.

With steel framing doing the heavy lifting, you can move interior partitions and storage around without worrying about hidden load paths.

3. Good Cost Per Square Foot Versus Smaller Sizes

You pay for every foundation and every delivery. Once the trucks roll and the crew is on site, going from a 30×40 to a 40×40 often adds less than people expect on a per square foot basis, yet gives you 400 extra square feet.

Many cost guides show that larger footprints often drop the average price per square foot compared to very small buildings, because fixed costs are spread over more area.

In other words, a 40×40 can be the point where you get a lot more space for a modest step up in total budget.

4. Works For Residential, Farm, And Light Commercial

You rarely meet someone who regrets having “too many” uses for their building.
A 40×40 metal building fits comfortably into:

• Residential
  • Three-car garage with storage
  • Backyard hobby shop or man cave
  • Toy box for RVs, boats, and side by sides
• Agricultural
  • Hay or feed storage
  • Smaller equipment barn
  • Livestock shelter plus feed room
• Light commercial
  • Service shop, repair bay, or small fabrication space
  • Small warehouse or inventory storage
  • Mixed-use office plus shop shell

Industry blogs consistently point out that 40×40 buildings show up on farms, commercial sites, and residential properties because they adapt so well across sectors.

5. Easy To Add Lean Tos, Porches, Or A Small Office

A square 40×40 layout makes it simple to attach:

• Open lean tos for additional covered parking or equipment
• Wrap around porches or overhangs
• A framed entry bump out or small office

You can plan these from day one or leave room to add them later as your needs grow. Many suppliers show 40×40 barns with open side wings or enclosed centers with side sheds, built exactly this way.

6. Straightforward To Insulate And Finish Out

Compared to very wide clear span structures, a 40 foot width is friendly for many standard insulation and liner panel systems.

• Wall and roof insulation can be added at installation or later.
• Interior framing for drywall or metal liner panels is simple because of the regular framing grid.
• Electrical runs, plumbing, and HVAC distribution are easier to plan in a compact rectangle.

If you want a conditioned workshop or finished office inside your 40×40, you are starting with a very workable shell.

7. Resale And Property Value Benefits

Appraisers and real estate agents often highlight usable outbuildings as a plus, especially in rural and exurban markets.

A 40×40 metal building can:

• Make your property more attractive to buyers with hobbies, trades, or farm equipment
• Compete with stick built garages at a lower maintenance cost
• Provide documented value through engineering, warranties, and durable steel construction.

While exact value impact varies by market, you are usually not wasting money when you add secure, versatile, covered space.

When You Should Consider A Different Size

Signs You Should Step Up To 40×60 Or Larger

You may want a 40×60, 50×60, or even 40×80 building if:

• You own large Class A motorhomes, buses, or tall fifth wheel RVs and you want wide, tall bays
• Your farm equipment includes larger combines, air seeders, or multiple big tractors
• You are planning a serious commercial shop with multiple bays and drive through traffic
• You want to combine full office build out plus large shop area in one single shell

Larger footprints help keep safe circulation space around big machines and provide better separation between clean office or retail zones and louder work areas.

A smaller building may be smarter if:

• You only need to park two vehicles and keep some tools dry
• Your lot has setback or coverage limits that restrict larger buildings
• You want to keep the concrete and steel budget minimal and do not plan to grow into the space
• You are experimenting with a side business and want to stay conservative at first

Get Carports already offers 30×40 metal buildings that many homeowners and small farms find ideal when they do not need the full 40×40 footprint.

When in doubt, list every vehicle, piece of equipment, and future use you can think of, then sketch footprints on graph paper at both sizes. That exercise alone often makes your decision obvious.

Must-Know Planning Steps Before You Order

Before you lock in a 40×40 metal building, a little homework will save you stress and money.

Check Local Codes, Permitting, And HOA Rules

• Call your city or county building department to ask about:
  • Required permits
  • Setbacks from property lines and other structures
  • Maximum height
  • Snow and wind load requirements
• If you have an HOA, review rules on:
  • Outbuilding size and height
  • Exterior colors and siding appearance
  • Placement, driveway connections, and visibility

Get Carports offers certified buildings that are engineered to meet specified wind and snow loads for your location, with warranties tied to the engineer-certified drawings provided at installation.

Site Prep, Slab Planning, And Access For Delivery

Before the building crew arrives you will typically need:

• A level, compacted pad with proper drainage
• A concrete slab laid out to the exact building dimensions or a bit larger if desired
• Room for delivery trucks to get in, unload, and turn around

Concrete thickness, reinforcement, and vapor barriers should be chosen with your local contractor based on soil and use. The heavier the vehicles or equipment, the more important it is to design the slab right.

Get Carports provides free delivery and installation for many structures, along with professional on site assembly, which makes coordinating your build day significantly easier.

Picking Roof Style, Doors, Windows, And Colors

With Get Carports you can pick from multiple roof styles and a wide color palette that can be previewed in 3D:

• Roof styles
  
  • Regular roof
  • A frame horizontal
  • Vertical roof for better drainage and maximum durability
• Doors and openings
  
  • Roll-up doors sized to your vehicles or equipment
  • Walk in doors for everyday access
  • Frame outs for future overhead doors or glass storefronts
• Windows and natural light
  
  • Fixed windows for light only
  • Functional windows for light and ventilation
• Colors and trim
  
  • Match your home or existing buildings
  • Go with classic barn red and white trim
  • Choose modern combinations like black roof, white or gray walls, and contrasting trim

Getting these details right can make the difference between “just a big box” and a building that looks like it belongs on your property.

Next Steps: How To Design Your Own 40×40 Metal Building

Example Custom Options To Consider

When you sit down to design your 40×40, think through options like:

• Building height: Will you ever want a lift, RV, or tall equipment inside
• Roof style: regular, A-frame, or vertical, based on your climate and budget
• Number, size, and placement of garage doors
• Walk-in door locations for daily traffic
• Windows or translucent panels for light
• Insulation now or later
• Interior partitions or a framed office area
• Lean tos or porches for extra covered space
• Color scheme for roof, walls, trim, and wainscot

Get Carports makes it easy to test sizes, roof styles, and color combos using our online estimator so you can see how your 40×40 will look before you order.

What To Bring To A Quote Call

When you are ready to talk with a Get Carports building specialist, having a few details ready speeds things up:

• Property zip code and whether the site is level or sloped
• Desired size, height, and general use
• Rough sketch showing door and window locations you prefer
• Any known local code or HOA requirements
• Whether you want certified engineering
• Whether you plan to insulate now or in the future
• Your rough budget range

With that information, we can walk you through realistic options, refine the layout, and provide a custom quote that reflects your state, load requirements, and chosen features.

Conclusion

If a 40×40 metal building sounds like the right fit, you are closer than you think.

You can:

• Use the Get Carports online builder to sketch your 40×40 metal building in a couple of minutes
• Save and share your design with family, partners, or your contractor
• Request a quote or call our team to talk through options, financing, and scheduling

Get Carports offers quality materials, comprehensive warranties, free delivery and installation in many areas, and flexible financing options, all designed to make owning a 40×40 metal building more straightforward and affordable.

FAQs

Is A 40×40 Metal Building Big Enough For 3 Cars And A Workshop?

Yes, in most cases a 40×40 metal building is very comfortable for three vehicles plus a real work area.

You can typically park:

• Three full size trucks or SUVs along the 40 foot side, with space between doors
• Or two daily drivers and a third bay reserved for a boat, trailer, or project car

That still leaves room for:

• A continuous workbench along the back wall
• Tool chests, shelving, and compressors
• Possibly a small office, bathroom, or storage room framed in a corner

If you want totally separate spaces for parking and a large, dedicated shop with multiple workstations, a 40×60 may feel more generous. But for a three car garage with a serious hobby zone on the same slab, 40×40 is a proven winner.

How Tall Should A 40×40 Metal Building Be?

There is no one right height, but here are practical guidelines:

• 10 to 12 foot legs
  
  • Good for standard pickups, SUVs, and half ton work trucks
  • Works for most basic shops and storage buildings
• 12 to 14 foot legs
  
  • Better for larger tractors, tall trailers, and lifts
  • Gives you room for mezzanines or overhead storage
• 16 foot or taller
  
  • Often chosen for RV storage, bus garages, or tall commercial doors
  • Allows for interior cranes, tall pallet racking, or big overhead doors
    

Get Carports already offers 40x40x16 commercial metal buildings with tall roll up doors, and we can design other heights based on your location and intended use.

When in doubt, think hard about the tallest thing you might ever want indoors, then add a little margin. It is almost always cheaper to build height in now than to wish for it later.

Can A 40×40 Metal Building Be Insulated And Finished Like A Regular Shop?

Absolutely.

A 40×40 metal building is an excellent starting point for a finished, comfortable shop space:

• You can add roof and wall insulation to help control temperature and condensation.
• Interior framing can support drywall, plywood, or metal liner panels.
• Electrical, plumbing, HVAC, and even epoxy floors can be installed just as they would be in a traditional shop.

The big advantages of a metal shell are:

• Engineered structure with clear span framing
• Durable exterior that resists rot, pests, and many weather challenges
• Faster erection compared to many stick built options

Tell your Get Carports specialist that you plan to finish the interior so we can help size doors, windows, and insulation options to match your plans.