SteelCarports.com
36x40x12 Storage Building
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: SC134

36′x40′x12′ Storage Building

Starting at
$20,650
Financed
$280/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.

This 36′x40′x12′ A-frame vertical roof building offers ample space with two 10′x10′ framed openings, and ten 36"x80" framed openings, providing easy access, ventilation, and natural light.

It is close to square, which keeps the floor easy to divide instead of forcing everything into one line. Openings come framed and ready, with the doors chosen and priced separately when you quote it. The most common thing we quote a 36′x40′x12′ for is a service garage with a wash bay at one end. Second most common: boat storage.

Most popular for service garage with a wash bay at one end

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
A-Frame Vertical Roof
Framed openings
(2) 10′x10′ Framed Openings, (10) 36′x80′ Framed Openings
Workmanship warranty
30 days
Rust-through warranty
20 years
Delivery & installation
Included
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.

Similar products

Close to this size.

Questions

Good to know.

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

No concrete required. A 36′ x 40′ x 12′ cover anchors to concrete, asphalt or compacted ground, and the right anchors for whichever you have are included. What matters is that the 36′ x 40′ area is level and clear when the crew arrives.

On this 36′ x 40′ x 12′ the 12′ is eave height — base rail up to where the roof meets the sidewall, which is the height of the legs. The peak sits higher because the roof is pitched. Check clearance against the eave and against the door opening, never against the peak.

A framed opening is a door-sized gap with the structural framing already built around it and no door hung in it. You get the opening; you decide later whether to hang a door there or leave it open for drive-through access. This build is specified with (2) 10′x10′ framed Openings, (10) 36′x80′ framed openings.

Delivery and professional installation are both in it — the crew sets the 36′ x 40′ x 12′ on your site. What it does not cover is getting that site ready: leveling, and the concrete if you are pouring a pad. That happens before the crew arrives, by you or a local contractor. Treat $20,650 as the starting figure; options and your county's wind and snow certification move it.

The 20 years figure is rust-through on the frame, which is the structural cover and the one that matters over the life of a 36′ x 40′ building. Separately, the install itself is warranted 30 days, so anything that looks wrong when the crew leaves should be raised inside that window.

It is not a fixed size. Starting from this 36′ x 40′, width changes in 2-foot steps and length in 5-foot steps, and the 12′ legs move a foot at a time. Give us the size you need and we quote that one.

Two different parts. The frame is the tubing carrying the load of this 36′ x 40′ x 12′ — 14-gauge galvanized steel. The panels are the skin screwed to it, 29-gauge steel. Lower gauge number means thicker steel, so the frame is always the heavier of the two. Compare frame to frame across quotes; that is the number that decides how a building stands up.
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
$20,650
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