SteelCarports.com
18x40 Colonial Utility Building
Color
Optional — pick one or choose at quote
SKU: SC195

18′x40′ Colonial Utility Building

Starting at
$13,425
Financed
$182/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
Included on every build
  • 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
At a glance

The build, by the numbers.

This 18′x40′x9′ A-frame colonial utility building features a 10′ enclosed section, (3) 9′x8′ side frame outs with 45° cuts, a 6′x6′ door, and a walk-in door.

No windows are specified, so daylight is something to raise at quote if you want it. The most common thing we quote an 18′x40′x9′ for is a vacation cabin shell on a wooded lot. Second most common: a studio addition.

Most popular for vacation cabin shell on a wooded lot

Building size

  • 18′Wide
  • 40′Long
  • 9′High
Total coverage720 sq ft

Building details

Framed openings
(3) 9′x8′ Framed Openings
Roll-up doors
(1) 6′x6′ Roll Up Door
Walk-in doors
(1) Walk-in door
Workmanship warranty
30 days
Rust-through warranty
20 years
Delivery & installation
Included
What's it for

Same shell, very different jobs.

A 18′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.

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 18′ x 40′ footprint and check it for level before delivery day — uneven ground is the one thing that reliably slows an install down.

On this 18′ x 40′ x 9′ the 9′ 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.

This one is specified with (1) 6′x6′ roll up door. That is the opening itself, so measure whatever has to drive through against the door rather than against the 18′ 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.

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 (3) 9′x8′ framed openings.

$13,425 covers the building, the delivery and the install crew. It does not cover site work — leveling the 18′ x 40′ area, or pouring a slab if this one is going on concrete. Those happen before install day. Options and local wind and snow certification are the two things that move the number.

The 20 years figure is rust-through on the frame, which is the structural cover and the one that matters over the life of an 18′ 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 18′ x 40′, width changes in 2-foot steps and length in 5-foot steps, and the 9′ legs move a foot at a time. Give us the size you need and we quote that one.
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
$13,425
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