A dependable outdoor storage box can keep garden tools, cushions, toys, and pool accessories protected while making your patio easier to use. The best lockable garden storage boxes combine weather-resistant construction with practical capacity and convenient access.
We’ve compared 10 popular options across sizes, materials, security features, mobility, and everyday usability to help you choose a box that fits your space and storage needs.
Best 10 Lockable Garden Storage Boxes Picks for 2026
Best Overall
Keter Westwood 150-Gallon Storage Box
- Large 150-gallon capacity
- Waterproof, lockable resin construction
- Doubles as seating for two adults
Best For: Large patios needing high-capacity storage and seating
Best Storage Bench
- 80 gallons of concealed storage
- Seats two or three people
- Reinforced case with locking holes
Best For: Patios needing combined storage and bench seating
Best High-Capacity Option
- Largest 200-gallon capacity
- Waterproof and UV-resistant resin
- Lockable lid with padlock access
Best For: Storing large amounts of outdoor gear and supplies
Best Compact Pick
EasyUp 60-Gallon Resin Deck Box
- Compact design for small spaces
- Waterproof, UV-resistant resin
- Functions as storage, bench, or table
Best For: Balconies, small patios, and narrow outdoor areas
Large-Capacity Pick
Greesum 110-Gallon Lockable Deck Box
- 110-gallon storage for bulky outdoor gear
- Waterproof, UV-resistant polypropylene construction
- Reinforced lid doubles as seating or a side table
Best For: Large patios needing substantial cushion, pool-supply, or tool storage
Bench-Style Choice
Devoko 100-Gallon Waterproof Deck Box
- 100-gallon compartment for cushions and tools
- Weather-resistant waterproof resin construction
- Bench seating supports up to 500 pounds
Best For: Outdoor spaces needing both lockable storage and extra seating
Compact Space Saver
Greesum 31-Gallon Lockable Storage Box
- Compact 31-gallon size for smaller outdoor areas
- Waterproof and UV-resistant resin construction
- Lid can serve as a seat or side table
Best For: Balconies, small patios, and compact tool or cushion storage
Best with Extra Features
Devoko 78-Gallon Lockable Deck Box
- Waterproof resin with rattan-style finish
- 78-gallon space for cushions and tools
- Hydraulic hinge, handles, and lockable lid
Best For: Medium-capacity patio storage with bench-style versatility
Best With Wheels
DRATO 155-Gallon Rolling Deck Box
- 155-gallon waterproof outdoor storage
- Wheels and built-in handle improve mobility
- Lockable design doubles as seating or a side table
Best For: Large outdoor spaces needing movable storage
Best Extra-Large Option
- Huge 300-gallon capacity for bulky gear
- UV-resistant, waterproof all-weather resin
- Padlock-compatible lid and tool-free assembly
Best For: High-volume storage of furniture, tools, and seasonal items
Best Overall – Keter Westwood 150-Gallon Storage Box
The Keter Westwood is a strong all-around choice among lockable garden storage boxes. Its 150-gallon resin body provides ample room for cushions, pool floats, and garden gear, while the bench-style design adds seating for two adults.
Best For: Large patios and households that want generous storage plus extra seating.
Pros:
- Spacious 150-gallon capacity for cushions, floats, and outdoor accessories.
- Lockable, waterproof, UV-resistant, and rust-resistant resin construction.
- Easy-lift hydraulic pistons support effortless opening and quiet closing.
- Supports up to 660 pounds and can seat two adults.
Cons:
- Its 61-inch width may be too large for compact patios.
- Assembly is required.
This is a practical pick when capacity and versatility matter most. The wood-plank appearance helps it blend into patio settings, while the weather-resistant resin keeps maintenance simpler than with real wood.
Best Storage Bench – Devoko 80-Gallon Deck Box
The Devoko 80-gallon bench combines hidden storage with everyday seating, making it a useful option for shoppers comparing lockable garden storage boxes for a busy patio. Its resin case is reinforced with three steel bars and includes locking holes for added security.
Best For: Patio owners who want storage for cushions, tools, or pool supplies without giving up bench seating.
Pros:
- Provides 80 gallons of concealed outdoor storage.
- Seats two or three people with a 400-pound weight capacity.
- Reinforced with three steel bars and designed with locking holes.
- Interior dimensions are listed at 48.4 by 22.4 by 16.9 inches.
Cons:
- The listing does not specify waterproof or UV-resistant features.
- No cushion is included with this version.
Choose this model if seating is as important as storage. It offers a moderate capacity and compact footprint, though buyers who need clearly documented all-weather protection may prefer a model with more detailed weatherproof specifications.
Best High-Capacity Option – 200-Gallon Resin Deck Box
This 200-gallon resin deck box stands out among lockable garden storage boxes for maximum listed capacity. It is designed to hold patio cushions, gardening tools, pool accessories, and other outdoor supplies while its waterproof, UV-resistant construction helps protect contents from the elements.
Best For: Shoppers who need the largest storage volume for outdoor equipment and supplies.
Pros:
- Offers a spacious 200-gallon storage volume.
- Waterproof and UV-resistant resin helps protect stored items.
- Lockable lid accepts a padlock, though the padlock is not included.
- Tool-free assembly and a smooth, easy-clean surface.
Cons:
- The padlock must be purchased separately.
- Its listed dimensions may require careful placement planning.
If you have substantial outdoor storage needs, this box provides more capacity than the other options here. Its black wood texture offers a decorative appearance, while the weather-focused construction suits year-round patio or garden use.
Best Compact Pick – EasyUp 60-Gallon Resin Deck Box
The EasyUp is a compact choice for lockable garden storage boxes, with a design suited to small patios, balconies, and narrow outdoor spaces. Its waterproof resin construction provides storage for cushions, pool accessories, and tools, while the flat top can serve as a bench or side table.
Best For: Small outdoor areas where compact storage and multiple uses are priorities.
Pros:
- Compact footprint measures 31.78 by 17.7 by 22.58 inches.
- Waterproof, UV-resistant resin is designed to resist fading, cracking, and warping.
- Lockable lid supports use of a personal padlock.
- Tool-free assembly is advertised to take about six minutes.
Cons:
- The notes list both 55-gallon capacity and 45-gallon storage volume.
- The padlock is not included.
- Its smaller size limits what can be stored compared with larger boxes.
This model makes sense when floor space is limited and you value flexibility. It can store smaller outdoor essentials while also functioning as a bench or side table, but verify the usable capacity before buying.
Large-Capacity Pick – Greesum 110-Gallon Lockable Deck Box
If you need lockable garden storage boxes with room for bulky outdoor gear, the Greesum 110-gallon box is a practical option. Its waterproof, UV-resistant polypropylene construction is designed for cushions, pool supplies, garden tools, and seasonal toys, while the reinforced lid can also serve as a bench or side table.
Best For: Households needing high-capacity storage for patio cushions, pool equipment, garden tools, and other seasonal items.
Pros:
- 110-gallon capacity accommodates bulky outdoor items.
- Waterproof, fade-resistant, and corrosion-resistant PP construction.
- Lockable latch and slow-close hydraulic rods support secure, safer use.
- Reinforced lid can function as seating or a side table.
Cons:
- The large footprint may require substantial deck or patio space.
- Protection depends on the supplied latch; a separate padlock is not specified.
Choose this model when capacity is the priority. It combines substantial storage with useful lid support and tool-free assembly, making it a versatile fit for larger outdoor spaces.
Bench-Style Choice – Devoko 100-Gallon Waterproof Deck Box
Among lockable garden storage boxes, the Devoko 100-gallon deck box stands out for combining weather-resistant storage with extra seating. Its resin construction is intended to resist fading, rusting, peeling, and bending, and the box includes gas rods for controlled opening and closing.
Best For: Patios, porches, and poolside areas where storage and bench seating are both useful.
Pros:
- 100-gallon interior stores cushions, tools, and pool equipment.
- Waterproof, UV-protected resin helps resist outdoor wear.
- Two-seat bench supports up to 500 pounds.
- Lockable lid and gas rods add security and controlled operation.
Cons:
- At 55 pounds, it is heavier than the smaller options in this roundup.
- The single-compartment design offers no internal separation.
This is a strong choice if your storage box also needs to provide seating. Its generous capacity and 500-pound seating rating make it especially useful in social outdoor areas.
Compact Space Saver – Greesum 31-Gallon Lockable Storage Box
For smaller patios and balconies, this compact Greesum model is one of the more manageable lockable garden storage boxes. The 31-gallon resin box is waterproof and UV-resistant, with room for selected garden tools, cushions, or pool supplies without taking up the footprint of a full-size deck box.
Best For: Smaller outdoor areas that need organized storage for everyday tools, cushions, or pool accessories.
Pros:
- Compact 31-gallon capacity suits space-conscious layouts.
- Waterproof, corrosion-resistant, and UV-resistant resin construction.
- Hydraulic bracket supports controlled lid movement.
- Lid can serve as a seat or side table for one adult.
Cons:
- Its capacity is limited for large cushion sets or bulky equipment.
- A padlock is not included.
This box makes the most sense when conserving floor space matters more than maximum capacity. It provides useful weather protection and lockable-padlock compatibility in a compact format.
Best with Extra Features – Devoko 78-Gallon Lockable Deck Box
If you need lockable garden storage boxes for cushions, tools, or pool supplies, the Devoko 78-gallon deck box offers a practical balance of capacity and everyday usability. Its waterproof resin construction is suited to patios, gardens, porches, and other outdoor areas, while the rattan-style finish gives it a furniture-like appearance.
Best For: Patio owners who want medium-capacity storage that can also function as a bench or decorative outdoor feature.
Pros:
- Waterproof resin construction helps resist fading and rusting.
- 78-gallon internal capacity accommodates cushions, garden tools, and pool supplies.
- Hydraulic hinge helps prevent lid pinching, and side handles make repositioning easier.
- Lockable flip-top lid adds security for stored items.
Cons:
- Its single compartment offers no built-in organization for smaller items.
- The supplied notes do not indicate that a lock is included.
The Devoko is a well-rounded choice when you want lockable garden storage with a relatively compact footprint and a bench-friendly design. It is less suited to households needing extra-large seasonal storage, but its waterproof resin build and 78-gallon capacity cover many routine outdoor-storage needs.
Best With Wheels – DRATO 155-Gallon Rolling Deck Box
For shoppers comparing lockable garden storage boxes that are easier to move, the DRATO combines a 155-gallon capacity with wheels and a built-in handle. Its waterproof resin-based construction is designed for outdoor use, making it suitable for storing cushions, pool floats, garden tools, and other backyard equipment.
Best For: Larger patios and backyards where stored items may need to be moved or where seating and storage serve multiple purposes.
Pros:
- 155-gallon capacity provides substantially more room than a typical medium deck box.
- Wheels and a built-in handle support easier repositioning.
- Waterproof, weatherproof construction helps protect contents from outdoor conditions.
- Can serve as a bench or side table and is rated for approximately 350 pounds.
Cons:
- The 46.1-inch length and 22.68-inch height require a suitable placement area.
- The supplied notes do not specify whether a padlock or other lock is included.
The DRATO stands out for combining substantial storage with mobility, a useful pairing when a fixed box would be inconvenient. Its seating capacity adds flexibility, while the lockable design provides added protection for outdoor accessories and tools.
Best Extra-Large Option – 300-Gallon Resin Storage Box
Among lockable garden storage boxes, this 300-gallon resin model is designed for bulky outdoor items and high-volume organization. It provides room for patio furniture, garden tools, pool toys, sports equipment, and seasonal decorations, while its waterproof, UV-resistant construction is intended for year-round outdoor conditions.
Best For: Households with extensive outdoor equipment or bulky seasonal items that need one large storage container.
Pros:
- Extra-large 300-gallon capacity accommodates bulky and seasonal belongings.
- Weather-resistant resin with UV inhibitors is designed for sun, rain, snow, and humidity.
- Reinforced lid accepts a padlock for added security.
- Tool-free snap-together assembly and multipurpose bench or side-table use add convenience.
Cons:
- Its 57.87-by-32.24-inch footprint requires considerable outdoor space.
- The compatible padlock is not included.
- At 56 pounds, it is less convenient to reposition than smaller boxes.
This model is the strongest capacity choice in the group for serious backyard organization. Its large footprint and weight make placement important, but the 300-gallon interior, weather protection, and padlock compatibility make it well suited to storing substantial outdoor gear.
How We Picked the Best Lockable Garden Storage Boxes
We assessed these boxes by focusing on the features that matter most outdoors: capacity, water and UV resistance, lid design, lock compatibility, construction materials, ventilation, portability, and ease of access. Resin models are generally low-maintenance and resist rust, while larger boxes can hold bulky cushions and patio equipment but require more floor space.
Because manufacturer specifications and real-world weather conditions can vary, treat “waterproof” claims as protection against ordinary rain rather than a guarantee against flooding or standing water. A covered, level location will help any storage box last longer.
Quick Comparison
| Storage size | Best suited to | What to prioritize |
|---|---|---|
| 31–60 gallons | Small patios, tools, and pool accessories | Compact footprint and easy access |
| 78–110 gallons | Cushions, toys, and everyday patio storage | Balanced capacity and weather protection |
| 150–200 gallons | Large cushion sets and bulky equipment | Strong lid support and lifting assistance |
| 300 gallons | High-volume household or entertaining storage | Available floor space and sturdy construction |
Key Buying Factors for Lockable Garden Storage Boxes
Capacity and Dimensions
Check the internal dimensions—not just the advertised gallon rating—to ensure the box can hold your items. Measure cushions, bins, and tools before ordering, and leave enough clearance for the lid to open fully.
Weather Resistance
Look for UV-resistant resin, a fitted lid, sealed construction, and a design that keeps rain from pooling. Storage boxes are best for weather-tolerant items; use sealed containers inside for documents, electronics, or anything highly sensitive to moisture.
Locking and Security
A lockable latch can deter casual access, but most deck boxes are not security safes. Confirm whether a padlock is included or must be purchased separately, and check that the latch is positioned conveniently.
Lid Operation and Durability
Hydraulic rods, gas struts, or easy-lift pistons make large lids safer and more comfortable to use. A reinforced lid is especially useful when the box doubles as a bench, but verify the stated weight limit before sitting on it.
Placement and Portability
Choose a level surface with drainage and some overhead clearance. Wheels or side handles can help move heavier boxes, while compact models work better on balconies and narrow patios.
Who Should Buy Which Lockable Garden Storage Boxes?
Choose a compact 31- to 60-gallon model for a small patio, garden tools, or pool accessories. A mid-sized 78- to 110-gallon box is the most versatile choice for cushions, toys, and routine outdoor organization. If you store multiple cushion sets or bulky furnishings, consider a 150- to 200-gallon model with assisted lid opening. The largest 300-gallon option suits households with substantial storage needs and plenty of available space.
For frequent access, prioritize smooth lid operation and a convenient height. For stronger weather exposure, choose UV-resistant resin and position the box under a roof or cover where possible. The right Lockable Garden Storage Boxes should fit both your belongings and your patio without blocking walkways or drainage.