18x20 Single Car Garage

This 18×20 steel garage with 9 feet walls is about as small as you can go while still having a space that feels usable. It fits a standard car with room to open doors and move around, but it fills up fast once tools or storage are added. That’s usually the deciding factor for people choosing this size. The vertical roof helps with runoff and keeps debris from sitting, which matters even on smaller buildings over time.

The door and window layout keeps access simple and lets light in without giving up too much wall space. This size is commonly used when space on the property is limited but covered, lockable storage is still needed.

18×20 Single Car Garage Specs:

• Building Type: Steel Garage

• Overall Size: 18′ W × 20′ L × 9′ H (leg height)

• Total Covered Area: 360 sq. ft.

• Roof Style: Vertical Roof

• 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 (10-Year Panel Warranty)

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

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

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

• Garage Door: (1) 9′ × 8′ Roll-Up Door

• Commonly used by homeowners who need covered parking or lockable storage

• Suitable for one standard car, with limited room for shelving or tools

• Often chosen for residential properties with tight space or setback limits