10 Best Large Outdoor Storage Containers 2026
Table of Contents
- Quick Comparison: 10 Best Large Outdoor Storage Containers
- How We Evaluated These Outdoor Storage Containers
- Resin and Plastic Outdoor Storage Containers
-
Metal and Steel Outdoor Storage Containers
- 13'x20' Metal Shed with Double Front Doors & Side Entry Door
- 20' x 13' Heavy-Duty Metal Storage Shed with Double & Side Doors
- 12x20ft Outdoor Metal Garage Shed
- 12x15FT Outdoor Metal Garage Shed
- 13'x20' Plus Upgraded Metal Shed w/ Double Front Doors & Side Entry Door
- Outdoor Steel 7 x 4-ft Storage Shed with Sloped Roof
- 10' x 12' Woodgrain Steel Storage Shed with Double Doors & Gable Roof
- Best Materials for Outdoor Storage Containers
- How to Waterproof Outdoor Storage
- Lockable Outdoor Storage Solutions
- Which Large Outdoor Storage Container Is Right for You?
- Frequently Asked Questions
Last Updated: September 29, 2026
Quick Comparison: 10 Best Large Outdoor Storage Containers
The best large outdoor storage container for most homeowners in 2026 is a resin shed in the 8' x 12' to 8' x 16' range, because resin resists rust, rot, and UV fading better than budget metal or wood. This guide from Home Outpost Supply ranks ten options by size, material, and price. Large outdoor storage containers solve the problem garages were never designed for: mowers, bikes, patio cushions, and garden tools competing with your car for floor space.
Here's the short version before the full breakdown:
| Container | Price | Material | Footprint | Best For |
|---|---|---|---|---|
| 8' x 16' Resin Shed w/ Carpet | $1,964.95 | Resin | 8' x 16' | Maximum resin capacity |
| 6' x 8' Plastic Shed | $1,998.14 | Plastic | 6' x 8' | Small yards, tight budgets |
| Patiowell 8' x 12' Resin | $3,090.10 | Resin | 8' x 12' | Lockable, floored storage |
| 13'x20' Metal Shed | $690.00 | Galvanized steel | 13' x 20' | Lowest price per sq. ft. |
| 20' x 13' Heavy-Duty Metal | $1,922.95 | Galvanized steel | 20' x 13' | Vehicle + workshop |
| 12x20 Metal Garage Shed | $2,226.95 | Steel | 12' x 20' | Car storage |
| 12x15 Metal Garage Shed | $1,967.95 | Metal | 12' x 15' | Mid-size vehicle shelter |
| 13'x20' Plus Upgraded Metal | $1,599.00 | Galvanized steel | 13' x 20' | Ventilation + light |
| Steel 7 x 4-ft Shed | $982.40 | Galvanized steel | 4' x 7' | Narrow side yards |
| 10' x 12' Woodgrain Steel | $1,920.72 | Galvanized steel | 10' x 12' | Curb appeal |
How We Evaluated These Outdoor Storage Containers
We scored every container on five criteria: material durability, storage capacity, security, assembly requirements, and long-term maintenance. Price mattered, but it wasn't the deciding factor. A cheap shed that rusts through in three seasons costs more than a resin unit that lasts a decade.
Resin and Plastic Outdoor Storage Containers
Resin and plastic sheds win on maintenance. They don't rust, don't need painting or staining, and shrug off UV exposure far better than untreated wood. The trade-off is upfront cost and, on some models, a lighter feel than steel. For homeowners who want set-and-forget storage, resin is the smarter long-term buy.
8' x 16' Resin Outdoor Storage Shed with Carpet Flooring
The largest resin option on this list, and our top pick for pure capacity. The nominal 8' x 16' footprint measures approximately 15.3' L x 7.5' W x 7.8' H in actual exterior dimensions, so plan your installation area around the real numbers, not the label.
6' x 8' Outdoor Plastic Storage Shed - Black & Gray
Roughly 48 square feet of footprint in a black and gray finish that reads contemporary rather than industrial. At about 250 lbs assembled, it's manageable for a two-person install, and plastic construction means zero exterior maintenance.
Patiowell 8' x 12' Resin Storage Shed with Floor, Windows & Lockable Door
The most feature-dense resin shed here. It includes an integrated plastic floor, two windows for natural light, and a lockable door. At approximately 487 lbs, it's a permanent structure, not a portable cabinet.
Metal and Steel Outdoor Storage Containers
Steel sheds deliver the most square footage per dollar and the structural integrity to handle vehicles and heavy equipment. Galvanized and anti-UV coated panels resist corrosion, and modern finishes hold up far better than the bare-metal sheds of twenty years ago. Expect more assembly work than resin, and always anchor the frame.
13'x20' Metal Shed with Double Front Doors & Side Entry Door
The value leader. At $690, it undercuts every other large container on this list while still offering a 13' x 20' footprint, four vents for airflow, and an anti-UV galvanized steel coating that resists corrosion.
20' x 13' Heavy-Duty Metal Storage Shed with Double & Side Doors
Nearly 250 square feet of exterior footprint puts this in a different class. The front double-door opening measures about 113.4" W x 77.6" H, wide enough for vehicles and oversized equipment. A 29.1" x 72.4" side door handles daily access.
Price: $1,922.95 Best for: Backyard workshops and equipment-heavy properties.
12x20ft Outdoor Metal Garage Shed
Approximately 240 square feet of covered space built for vehicles. Lockable double hinged doors provide security, and a thin bottom crossbar makes rolling a car or mower in easier. A semi-transparent side window brings in daylight without opening the doors.
Price: $2,226.95 Best for: Car, motorcycle, or ATV storage.
12x15FT Outdoor Metal Garage Shed
A mid-size garage shed with heavy-duty metal construction and lockable double-hinged doors. The dark finish blends into most landscapes, and the footprint suits properties that can't fit a full 20-footer.
Price: $1,967.95 Best for: Single-vehicle or lawn equipment shelter.
8' x 16' Resin Outdoor Storage Shed →
13'x20' Plus Upgraded Metal Shed w/ Double Front Doors & Side Entry Door
238.8 square feet of floor space with four wall vents and a tilted roof designed to shed rainwater rather than let it pool and rust the panels. The doors include lock holes for a padlock. Rated for 50 mph wind load and 20 lbs/ft² snow load.
Outdoor Steel 7 x 4-ft Storage Shed with Sloped Roof
154 cubic feet in a footprint narrow enough for the side of a house or fence line. Galvanized steel with wood-embossed panels, a sloped roof that directs water away, and nearly 7 feet of interior peak height. Swing doors mount on either side.
Pre-cut and pre-drilled components simplify assembly.
10' x 12' Woodgrain Steel Storage Shed with Double Doors & Gable Roof
Steel construction with a woodgrain finish that looks warmer than bare metal. Interior measures about 118.25" W x 140" D x 80.8" H, and the double-door opening spans roughly 55.5". Steel won't rot, and the exterior needs no routine painting.
Best Materials for Outdoor Storage Containers
Resin and galvanized steel are the two best materials for outdoor storage containers, and the right choice depends on your climate and how much maintenance you'll tolerate. Resin resists UV fading, rust, and rot with no upkeep. Galvanized steel offers more structural strength per dollar and handles heavy loads like vehicles.
- Resin: No rust, no repainting, excellent UV resistance, lighter structural capacity
- Galvanized steel: Strong, corrosion-resistant when coated, needs anchoring, more assembly
- Plastic: Similar benefits to resin at lower cost, often lighter-duty
How to Waterproof Outdoor Storage
Waterproofing an outdoor storage container comes down to three things: a sealed roof, a raised foundation, and airflow. Water enters through roofs, door gaps, and ground contact far more often than through walls.
Lockable Outdoor Storage Solutions
A lockable door is the difference between storage and a giveaway. Every metal model on this list includes lockable doors or lock holes, and the Patiowell 8' x 12' resin shed includes a lockable door design.
Which Large Outdoor Storage Container Is Right for You?
Match the container to your equipment, not the other way around. Measure your largest item first, then compare it against door openings and interior dimensions, not just the nominal size.
Use this decision framework:
- Vehicles or riding mowers: 12x20 or 20' x 13' metal garage sheds
- Full garage overflow: 8' x 16' resin or 13' x 20' metal
- Small yards: 6' x 8' plastic or 7' x 4' steel
- HOA or visible placement: woodgrain steel or neutral resin finishes
- Lowest upfront cost: 13'x20' metal shed at $690
Frequently Asked Questions
What is the best storage container for outside use?
The best outdoor storage container depends on your climate and what you're storing. Resin sheds like the 8' x 16' Resin Outdoor Storage Shed with Carpet Flooring resist rust and require no painting, making them ideal for wet or humid areas. Galvanized steel options such as the 13'x20' Metal Shed offer superior strength and security for tools and equipment. For vehicles or large machinery, a heavy-duty metal garage shed provides the space and durability you need.
What are the best outdoor weatherproof storage boxes?
Weatherproof storage boxes are typically made from resin or galvanized steel. Resin models resist UV rays, moisture, and temperature swings without rusting, while steel boxes with anti-UV coatings handle heavy snow and wind. Look for features like sloped roofs, ventilation, and sealed doors. The 7' x 4' Galvanized Steel Storage Shed, for example, has a sloped roof to direct rain away, and the 13'x20' Plus Upgraded Metal Shed includes four vents to reduce moisture buildup.
Which is better, Suncast or Keter?
Suncast and Keter both make resin storage containers, but specific model features matter more than brand names. Compare dimensions, door styles, floor inclusion, and warranty. At Home Outpost Supply, we carry resin sheds from Patiowell and other manufacturers that offer integrated floors, lockable doors, and UV-resistant panels. Focus on the specifications that match your storage needs rather than brand loyalty.
Which outdoor storage box is best?
The best outdoor storage box is the one that fits your items, climate, and space. For small tools and cushions, a 6' x 8' plastic shed works well. For lawn equipment and bikes, an 8' x 12' resin shed with a floor provides ample room. If you need to store a vehicle, a 12' x 20' metal garage shed is a better fit. Always measure your available space and check door clearances before ordering.
How do I choose the right size outdoor storage container?
Start by listing what you plan to store and their dimensions. Add 20-30% extra space for access and future items. For reference, a push mower needs about 2 feet by 3 feet of floor space, while a riding mower requires closer to 4 feet by 6 feet. Consider vertical height for long-handled tools. If you're unsure, a larger shed like the 10' x 12' Woodgrain Steel Storage Shed offers flexibility to organize multiple categories without feeling cramped.
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