18x20 Outdoor Garage

SKU: INVT-000060
Long Star Steel Long Star Steel Long Star Steel Long Star Steel Long Star Steel
Payment as low as:
$280.00/Mo
Starting Price
$6,705.00
*Price may vary based on your state, add-ons, local wind and snow ratings
Call for best pricing
(678) 304-4388
(678) 304-4388
18 Width
20 Length
9 Height
Certified Building
Easy Financing
Delivery & Installation Included
DESIGN IN 3D
DESIGN IN 3D
18x20 Outdoor Garage
18x20 Outdoor Garage
18x20 Outdoor Garage
Certified Building
Easy Financing
Delivery & Installation Included
DESIGN IN 3D
DESIGN IN 3D
Building Description
Building Colors
Building Add-ons

Looking for a compact yet spacious solution? Look no further!

This 18×20 steel garage with 12′ height is often chosen when vertical clearance matters more than extra floor space. The footprint stays compact, but the added height makes a difference for taller vehicles, equipment, or overhead storage. It works well for a single vehicle without feeling boxed in, and there’s still room to move around once the door is shut.

The vertical roof helps keep water and debris moving off instead of sitting, which matters even on smaller buildings over time. A full enclosure keeps everything protected, while the door and window layout keeps access simple and the interior from feeling closed off. If you’re planning a setup like this, LongStar Steel can review your site conditions and intended use to make sure the height and layout make sense before anything is finalized.

18×20 Outdoor Garage Specs:

  • Building Type: Steel Garage

  • Overall Size: 18′ W × 20′ L × 12′ H

  • Total Covered Area: 360 sq. ft.

  • Roof Style: Vertical Roof

  • Roof Pitch: 4/12

  • Installation Surface: Concrete

  • Certification: Built to local wind and snow code requirements

  • Frame Gauge: 14 GA Galvanized Steel

  • Ends: Fully Enclosed

  • Sides: Fully Enclosed

  • Panel Orientation: Horizontal Wall Panels

  • Roof Panels: 29 Gauge Steel, Charcoal (10-Year Panel Warranty)

  • Wall Panels: 29 Gauge Steel, Ivory (10-Year Panel Warranty)

  • Trim Color: White

  • Wainscot: Rustic Red, 29 Gauge Steel

  • Garage Door: (1) 10′ × 8′ Roll-Up Door

  • Garage Door Color: Satin White

  • Garage Door Location: Front Wall

  • Walk-In Door: (1) 34″ × 80″ Steel Man Door

  • Walk-In Door Location: Left Wall

  • Windows: (2) 24″ × 36″ Steel Windows

  • Window Location: Left Wall

  • Ideal for single-vehicle storage, equipment storage, residential garage use, tall vehicle or equipment clearance

Standard (10 & 40 Years)
  • Berry
  • Black
  • Bright White
  • Charcoal
  • Cocoa Brown
  • Hawaiian Blue
  • Rustic Red
  • Ivy Green
  • Light Gray
  • Saddle Tan
  • Taupe
  • Ivory
  • Galvalume
Premium (40 Years)
  • Buckskin
  • Burnished Slate
  • Dark Red
  • Evergreen
  • Gallery Blue
  • Light Stone
  • Copper Penny
  • Matte Black
Long Star Steel
Doors
(Walk-in, Roll-up, Garage)
From roll-up garage doors to walk-in entry doors, you can include as many as you need to access your things easily.
Long Star Steel
Windows
Improve your building's ventilation and light with our regular and premium-grade window options.
Long Star Steel
Insulation
No matter where you call home, your building should be comfortable. Our selection of insulation options can help you keep your structure cool, dry, and ready for anything life throws your way.
Long Star Steel
Roof Extensions
(Lean-tos, Overhangs)
Add porch covers and lean-to additions for extra coverage and protection from the elements.
Long Star Steel
Vents & Skylights
If you're working in a dark or fume-heavy environment, vents and skylights can give you the airflow and light needed to get the job done.
Long Star Steel
Color Screws
Use color-matching screws and hardware to protect your building from rust and add a touch of flair.

Looking for a compact yet spacious solution? Look no further!

This 18×20 steel garage with 12′ height is often chosen when vertical clearance matters more than extra floor space. The footprint stays compact, but the added height makes a difference for taller vehicles, equipment, or overhead storage. It works well for a single vehicle without feeling boxed in, and there’s still room to move around once the door is shut.

The vertical roof helps keep water and debris moving off instead of sitting, which matters even on smaller buildings over time. A full enclosure keeps everything protected, while the door and window layout keeps access simple and the interior from feeling closed off. If you’re planning a setup like this, LongStar Steel can review your site conditions and intended use to make sure the height and layout make sense before anything is finalized.

18×20 Outdoor Garage Specs:

  • Building Type: Steel Garage

  • Overall Size: 18′ W × 20′ L × 12′ H

  • Total Covered Area: 360 sq. ft.

  • Roof Style: Vertical Roof

  • Roof Pitch: 4/12

  • Installation Surface: Concrete

  • Certification: Built to local wind and snow code requirements

  • Frame Gauge: 14 GA Galvanized Steel

  • Ends: Fully Enclosed

  • Sides: Fully Enclosed

  • Panel Orientation: Horizontal Wall Panels

  • Roof Panels: 29 Gauge Steel, Charcoal (10-Year Panel Warranty)

  • Wall Panels: 29 Gauge Steel, Ivory (10-Year Panel Warranty)

  • Trim Color: White

  • Wainscot: Rustic Red, 29 Gauge Steel

  • Garage Door: (1) 10′ × 8′ Roll-Up Door

  • Garage Door Color: Satin White

  • Garage Door Location: Front Wall

  • Walk-In Door: (1) 34″ × 80″ Steel Man Door

  • Walk-In Door Location: Left Wall

  • Windows: (2) 24″ × 36″ Steel Windows

  • Window Location: Left Wall

  • Ideal for single-vehicle storage, equipment storage, residential garage use, tall vehicle or equipment clearance

Standard (10 & 40 Years)
  • Berry
  • Black
  • Bright White
  • Charcoal
  • Cocoa Brown
  • Hawaiian Blue
  • Rustic Red
  • Ivy Green
  • Light Gray
  • Saddle Tan
  • Taupe
  • Ivory
  • Galvalume
Premium (40 Years)
  • Buckskin
  • Burnished Slate
  • Dark Red
  • Evergreen
  • Gallery Blue
  • Light Stone
  • Copper Penny
  • Matte Black
Long Star Steel
Doors
(Walk-in, Roll-up, Garage)
From roll-up garage doors to walk-in entry doors, you can include as many as you need to access your things easily.
Long Star Steel
Windows
Improve your building's ventilation and light with our regular and premium-grade window options.
Long Star Steel
Insulation
No matter where you call home, your building should be comfortable. Our selection of insulation options can help you keep your structure cool, dry, and ready for anything life throws your way.
Long Star Steel
Roof Extensions
(Lean-tos, Overhangs)
Add porch covers and lean-to additions for extra coverage and protection from the elements.
Long Star Steel
Vents & Skylights
If you're working in a dark or fume-heavy environment, vents and skylights can give you the airflow and light needed to get the job done.
Long Star Steel
Color Screws
Use color-matching screws and hardware to protect your building from rust and add a touch of flair.
Let’s Build Your
Dream Structure
(678) 304-4388
(678) 304-4388
Long Star Steel
Call Now
(678) 304-4388