An instant detached garage
The generous 12 x 20 ft footprint creates approximately 240 sq ft of weather-protected storage without adding onto your home.










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The detached garage proof
Add garage-style utility without building onto your home. The 12 x 20 ft footprint gives vehicles, riding mowers, ATVs, tools, and seasonal gear a dedicated place to go.
The generous 12 x 20 ft footprint creates approximately 240 sq ft of weather-protected storage without adding onto your home.
Wide double front doors welcome trucks, cars, riding mowers, and ATVs. The separate side entry door keeps quick tool trips simple.
A reinforced steel frame and dark, weather-resistant ribbed exterior give the building a substantial garage-ready profile.
At a glance
Freight delivery and site prep
Freight delivery works best when the route and base are ready first. Confirm the delivery path, prepare a level footprint, and review local placement requirements for your property.
Plan a level base that accommodates the full 12 x 20 ft footprint.
Keep the delivery route clear and confirm that the destination can accommodate freight delivery.
Allow room around the exterior dimensions for access, doors, and everyday use.
Need more garage space without adding onto your home? This 12' x 20' Outdoor Metal Garage Shed gives you a spacious, enclosed area for protecting vehicles, motorcycles, lawn equipment, tools, and other valuable outdoor gear.
Built from heavy-duty steel, this large metal storage building combines the convenience of a backyard shed with the functionality of a detached garage. Wide double front doors provide convenient vehicle access, while a separate side door makes it easy to grab tools or equipment without opening the main garage doors.
Whether your garage is overflowing, you need a dedicated place for your motorcycle, or you're looking for additional outdoor equipment storage, this 12x20 metal garage shed helps you reclaim space and keep your property organized.
Sometimes you don't need to reorganize your garage—you simply need more space.
With approximately 240 square feet of covered space, this metal garage shed provides room for vehicles, lawn equipment, recreational gear, tools, and household overflow.
Use it as a:
Car storage garage
Motorcycle garage
Lawn equipment shed
Garden tractor storage building
Tool and workshop space
ATV or recreational equipment shelter
Seasonal storage building
Backyard storage garage
Built from heavy-duty steel, this outdoor garage shed is designed to create a durable enclosed storage space for your vehicles and equipment.
The metal construction provides a substantial alternative to smaller storage sheds when you need room for larger equipment or vehicle storage.
The front of the garage features lockable double hinged doors, giving you the wide opening needed to move vehicles and larger equipment in and out of the structure.
A thin bottom crossbar is specifically designed to make vehicle passage easier when entering or exiting the garage.
Don't want to open the large garage doors every time you need a tool?
A separate side access door makes everyday entry more convenient, particularly when you're using the building for tools, lawn equipment, DIY projects, or general storage.
Both storage and security matter when you're keeping valuable equipment outside your home. The lockable door design helps provide an additional layer of protection for the items stored inside.
Built-in ventilation openings help encourage airflow throughout the garage, an important feature for a large enclosed outdoor storage space.
A semi-transparent side window allows natural light into the structure, helping make the interior brighter and easier to use during the day without requiring the doors to remain open.
The generous 12' x 20' footprint gives you flexibility to create the storage space that works for your property.
Ideal for storing:
Cars and smaller vehicles
Motorcycles
ATVs and recreational equipment
Riding lawn mowers
Push mowers
Snow blowers
Garden equipment
Power tools
Automotive supplies
Outdoor furniture
Seasonal decorations
Home improvement supplies
Workshop equipment
You can also add shelving, tool storage, or other organization solutions to create a more functional garage or workshop environment.
Size: 12' x 20' class
Exterior Dimensions: Approximately 247.7" L x 149.1" W x 102.8" H
Construction: Heavy-duty steel
Main Entrance: Double hinged front doors
Security: Lockable front doors
Secondary Access: Side entry door
Ventilation: Integrated ventilation openings
Window: Semi-transparent side window for natural light
Vehicle Access: Thin bottom crossbar designed for easier vehicle passage
Your attached garage shouldn't have to hold everything you own.
Move lawn equipment, motorcycles, tools, seasonal items, and other bulky gear into a dedicated outdoor storage space and reclaim your home's garage for your vehicles, hobbies, projects—or simply a little breathing room.
This 12' x 20' heavy-duty metal garage shed gives homeowners a practical way to create substantial enclosed storage right in the backyard.
More storage. Less garage clutter. More room to enjoy your home.
Customer installations & verified reviews
See how Home Outpost Supply customers are putting serious storage, shelter, outdoor cooking, and garage-lift solutions to work at home.
“It arrived fully assembled, and the 1,653 lb desktop capacity with solid-steel construction feels ready for serious work. The curbside liftgate made delivery smooth from start to finish.”
Homeowner install · 10ft workbench storage cabinet
“The 12 x 20 ft footprint gives us approximately 240 sq ft of room, with wide vehicle doors and a separate pedestrian entry. The weather-resistant steel exterior keeps our equipment protected.”
Homeowner install · 12 x 20 ft outdoor metal garage shed
“The black marble countertop looks sharp, the caster wheels make positioning easy, and the plug-and-play LPG setup meant we could get the kitchen ready without a complicated project.”
Homeowner install · 104 inch outdoor kitchen
“The push-button remote makes raising our storage straightforward. Getting those bins overhead reclaimed valuable garage floor space and made room for the things we use every day.”
Homeowner install · Auxx-Lift storage lift