SteelCarports.com
36x40x12 Steel Barn
Color
Optional — pick one or choose at quote
  • Free delivery & professional installation
  • Anchors for concrete, asphalt, or ground
  • 12- or 14-gauge galvanized steel
  • Certifiable to your county's wind & snow loads
  • 20-year rust warranty on the frame
  • Financing & no-credit-check Rent-to-Own
SKU: SC5

36′x40′x12′ Steel Barn

Starting at
$22,108
Financed
$299/mo

Starting price — final cost varies by state, options, and any wind/snow certification.

Price-beat guarantee. Bring us a written quote for a comparable American-made building from any competitor — same gauge, same engineering, same install — and we'll beat it.

Call for Best Price: (833) 647-8335
At a glance

The build, by the numbers.

The 36′x40′x12′ steel barn features a spacious main area with 2′ vertical gap panels, (1) 10′x10′ roll-up door, (1) 8′x7′ roll-up door, and a walk-in door. Customize it with your choice of doors, windows, roof style, and colors.

The near-square footprint divides evenly, so you are not committed to a single long lane. Buyers most often order a 36′x40′x12′ barn for a hay barn with vertical drive-through center. It also gets ordered for a wash rack.

Most popular for hay barn with vertical drive-through center

Building size

  • 36′Wide
  • 40′Long
  • 12′High
Total coverage1,440 sq ft

Building details

Frame gauge
14-gauge galvanized steel
Panel gauge
29-gauge steel
Roof
Vertical Roofing
Roll-up doors
(1) 10′x10′ Roll-Up Door, (1) 8′x7′ Roll-Up Door
Walk-in doors
(1) Walk-In Door
Workmanship warranty
30 days
Rust-through warranty
20 years
Delivery & installation
Included
Financing
Available
Rent-to-Own
Not available
What's it for

Same shell, very different jobs.

A 36′x40′ gets specified differently depending on what goes in it — door placement, openings, leg height, whether it closes in. Tell us the job and we'll spec it to that instead of handing you a blank form.

Delivery & installation

What happens after you order.

01
Lock your price

We confirm your exact number for your ZIP and options, in writing — with our price-beat guarantee behind it.

02
Prep your site

Pick a level spot — concrete, asphalt, or ground. Anchors for all three are included.

03
We deliver & install

It arrives and goes up on your site, included in the price across 40 states. Nothing for you to assemble.

04
Backed for decades

Your steel frame carries a 20-year rust warranty from day one.

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Close to this size.

36x30x12 Barn
SC14
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Sq ft
1,080
Bays
3
Eave
12′
PopularMare-and-foal barn with oversized box stalls
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From $274/mo · 7 yr · 6.9% APR
Questions

Good to know.

A specialist can walk you through this exact build over the phone in a few minutes.

A level spot is enough. Concrete, asphalt and compacted ground all work, and the matching anchors for all three ship with the building. Mark out the full 36′ x 40′ footprint and check it for level before delivery day — uneven ground is the one thing that reliably slows an install down.

Eave height. On a 36′ x 40′ x 12′ that means 12′ of straight wall before the roof starts to pitch up, so usable height at the walls is 12′ and the center is taller. Measure your equipment against the eave figure if it sits near a sidewall.

This one is specified with (1) 10′x10′ Roll-Up Door, (1) 8′x7′ Roll-Up door. That is the opening itself, so measure whatever has to drive through against the door rather than against the 36′ width. Door sizes are not fixed — if what you are parking is tight, say so on the quote, because adding or resizing an opening up front is cheaper and cleaner than cutting one in later.

Yes to delivery and install, no to site prep. The crew brings and erects the 36′ x 40′ x 12′; you provide a level, cleared spot for it to land on. The price shown is a start point rather than a final invoice, because certification requirements and any added doors or openings change it.

Two covers on two clocks. The steel frame under this 36′ x 40′ x 12′ carries a 20 years rust-through warranty. Workmanship is covered 30 days from installation — the window for raising anything the crew got wrong on the day. Corrosion is the long one; install quality is the short one.

This page prices the 36′ x 40′ x 12′ as built, but width moves in 2-foot steps, length in 5-foot steps and leg height in 1-foot steps. Tell us the footprint you actually need and we price that build instead.

Frame gauge is structure, panel gauge is skin. On this 36′ x 40′ the frame is 14-gauge galvanized steel and the panels are 29-gauge steel. Because the scale runs backwards, the smaller number is the thicker steel — which is why the frame figure is the one worth checking when two quotes look the same.
Reviews

Owners say it best.

Real, verified Google reviews from owners who bought their building from us, straight from our business profile.

View all reviews
We are building a barndominium and they delivered the shell on schedule. Our contractor said the framing was straighter than most stick-built shells he sees.
P
Priya & Dave L.
Bend, OR
Loafing shed for the horses showed up exactly when they said it would. The crew leveled and anchored on uneven ground and didn't try to charge extra.
G
Greg H.
Bowling Green, KY
Hurricane-rated anchors and engineer-stamped drawings were ready when our county asked. Permit went through the first time.
T
Tonya W.
Lakeland, FL
Starting at
$22,108
Build your quote

Ready when you are.

Tell us what's going inside and we'll suggest a size to start from, then send back a real, same-day price.

Your building
Carport
Suggested size 18 × 26 × 8 ft — or choose one below
or
(833) 647-8335