8 Garden Storage Boxes Built for Outdoor Weather
The Keter Store It Out Max is the best all round garden store for bins, mowers and tools. The Keter XXL 230 Gallon Deck Box wins on sheer capacity for a patio, and the Suncast BMS4700 is the value pick for a narrow side passage.
Bins, mowers and tools all fit the Keter Store It Out Max, which leads this list. The Keter XXL 230 Gallon Deck Box wins on raw capacity, and the Suncast BMS4700 Horizontal Storage Shed fits narrow spaces nothing else will.
Listed capacity gets measured to the very top of the lid and rarely reflects what actually fits inside. A box that sheds rain in June can let water pool through a seam by December. We ranked seven units on usable internal dimensions, weather sealing, lid and floor strength, security options and what owners report after a full year outdoors.
How to pick the right one
What to check before buying garden storage Listed capacity in litres or gallons gets measured to the underside of the closed lid, including sloping volume nobody can actually use. What matters is whether a wheelie bin fits upright, a mower handle clears the doorway, and internal depth swallows a coiled hose. Write down the dimensions of the three largest items you need to store, then compare them against internal dimensions rather than the headline capacity figure, since manufacturers publish both and the gap is often substantial.
Weatherproofing depends on the lid and the base Resin storage rarely leaks through the panels themselves. Water gets in where the lid meets the body if there is no overhanging lip, and from underneath if the unit sits directly on soil or an uneven slab where puddles form. A lid designed to shed water outward past the body helps considerably, as does standing the unit on level, drained paving rather than bare ground. Raising it even slightly changes what survives inside.
Best storage for narrow passages versus large mowers Narrow side passages need a shallow horizontal shed like the Suncast BMS4700, which trades depth for a slim footprint against a wall. Ride on mowers and full size garden equipment need a walk in shed such as the Keter Factor, since deck boxes and slim sheds simply lack the floor space and door height. Matching the unit to the largest item first avoids buying twice.
Access design and assembly matter as much as size A lift lid box means every item at the bottom requires lifting everything above it. A shed with front doors makes the back reachable but leaves the top less usable. Units offering both, such as the Store It Out Max, let a bin roll out the front while tools come out through the lid. Budget a couple of hours for a box and most of a day for a shed, with a second person for roof sections, and use any anchoring points provided since larger empty units shift in strong wind.
The top picks, ranked
Keter Store It Out Max Outdoor Storage Shed
Two wheelie bins or a mower plus tools fit inside this shed, while its low profile still slides under a window. Front doors open alongside the lift lid, so the back stays reachable without crawling in. A helper makes assembly of the lid section considerably easier.
Pros
- Fits two wheelie bins or a mower and tools
- Dual access from lid and front doors
- Low enough to sit under a window
Cons
- Floor panel flexes under very heavy items
- Lid section needs two people to fit
Keter XXL 230 Gallon Deck Box
Cushions, pool equipment and garden games all fit with room to spare in this 230 gallon box, and the wood effect panelling looks acceptable on a patio rather than obviously plastic. Its lid holds enough weight to double as seating. Measuring the space carefully matters, since the footprint runs genuinely large.
Pros
- Enormous usable volume
- Lid doubles as patio seating
- Wood effect finish suits a deck
Cons
- Takes up a large footprint
- Lid only access makes reaching the base awkward
Suncast BMS4700 Horizontal Storage Shed
Sitting against a wall in a side passage or narrow yard is the whole point of this shallow horizontal unit, which leaves a walkway clear beside it. Both the lid and front doors open, essential given how little depth there is to work with. Bins and hand tools fit comfortably, though a mower will not.
Pros
- Shallow depth suits tight passages
- Reinforced floor handles heavier loads
- Dual access despite the compact shape
Cons
- Too shallow for a large mower
- Assembly instructions are fiddly
Lifetime 60012 Extra Large Deck Box
Thicker high density polyethylene walls barely flex under load, a clear step up from typical resin boxes. Real weather or children climbing on it are exactly the conditions this box is built for. Weight is the trade off, since repositioning it after assembly is not casual work.
Pros
- Noticeably thicker walls than typical resin boxes
- Gas assisted lid opens and holds safely
- Long warranty backs the durability claim
Cons
- Heavy and awkward to move once assembled
- Plain finish is more utilitarian than decorative
Rubbermaid Big Max Junior Storage Shed
Height, not floor area, is the advantage here, since a strimmer and long handled tools hang instead of lying flat. Double doors give walk up access, and the floor panel carries real weight. An uneven patio will make the doors bind, so a level base matters.
Pros
- Tall enough for long handled tools
- Walk up double door access
- Sturdy load bearing floor
Cons
- Doors bind if the base is not level
- Smaller footprint limits total capacity
Suncast DB8000 Deck Box
Cushions, toys and hose fittings fit this mid size deck box at a modest price, and the familiar resin wicker texture blends into most patios. Snap together panels make assembly quick without tools. Wall thickness stays modest, so heavy or sharp equipment is best kept elsewhere.
Pros
- Quick tool free assembly
- Attractive wicker texture finish
- Good value for the capacity
Cons
- Thin walls flex under heavy contents
- Not suitable for storing tools with sharp edges
Keter Factor 6×6 Outdoor Storage Shed
Boxes stop being enough at some point, and this walk in resin shed with steel reinforced construction is the next step up. A skylight and a floor rated for real weight, including a ride on mower, come standard. A full day of assembly on a prepared level base is the entry cost, after which no painting or timber treatment is ever needed.
Pros
- Walk in space with a strong floor
- No painting or timber treatment needed
- Skylight and ventilation come as standard
Cons
- Full day assembly with a prepared base required
- Highest cost and largest footprint here
How they compare
| # | Model | Capacity | Best for | Score | Price |
|---|---|---|---|---|---|
| 1 | Keter Store It Out Max Outdoor Storage Shed | Around 1200 litres | Best overall | 9.4 | Check price |
| 2 | Keter XXL 230 Gallon Deck Box | 230 gallons, around 870 litres | Best for capacity | 9.2 | Check price |
| 3 | Suncast BMS4700 Horizontal Storage Shed | Around 70 cubic feet | Best for narrow spaces | 9.0 | Check price |
| 4 | Lifetime 60012 Extra Large Deck Box | Around 116 gallons | Best for durability | 8.8 | Check price |
| 5 | Rubbermaid Big Max Junior Storage Shed | Around 32 cubic feet | Best small shed | 8.6 | Check price |
| 6 | Suncast DB8000 Deck Box | Around 73 gallons | Best budget | 8.3 | Check price |
| 7 | Keter Factor 6×6 Outdoor Storage Shed | Around 6 by 6 feet footprint | Best full size shed | 8.0 | Check price |
Good to know
Is resin garden storage actually waterproof?
Well designed units are highly water resistant rather than sealed. Rain runs off the lid and away, but condensation can still form inside, so store items that must stay dry in a sealed container within the box.
Do I need a base under a garden storage box?
A level, drained surface is important. Paving, a concrete pad or a timber frame all work. Placing storage straight onto soil or grass leads to water pooling under the floor and a damp interior.
Can I store a lawn mower in a deck box?
Only in the larger units with a reinforced floor. Check the internal height against the mower handle, and drain fuel before long term storage in an enclosed space.
How do I stop condensation building up inside garden storage?
Ventilation helps, so choose a unit with vents where possible and avoid packing it completely full. Storing damp items inside is the main cause, so let tools and cushions dry before they go in.
Are garden storage boxes secure enough for tools?
Most take a padlock, which deters casual theft but not a determined attempt, since the plastic body can be cut. Keep high value tools indoors or in a metal store.
Will a resin shed blow over in wind?
Empty units can shift in strong wind. Use the anchoring points most manufacturers provide, and where they are not supplied, weight the base or fix it to the paving.
How long does garden storage assembly take?
Roughly one to two hours for a deck box and most of a day for a walk in shed. A second person is genuinely useful for roof and lid sections.
Can I sit on a garden storage box lid?
Only on models specifically rated for seating, such as the Keter XXL deck box. Sitting on a lid not designed for it will crack the hinges over time.
Deck box vs storage shed, which is better for a small yard?
A deck box suits cushions, hoses and smaller tools in a compact footprint, while a shed suits mowers and long handled equipment that need more height. Small yards with limited floor space usually do better with a deck box or a shallow horizontal shed instead of a full walk in unit.
Final word
The Keter Store It Out Max is the garden store that solves the most common problems at once, taking bins or a mower while offering access from both the lid and the front. Choose the Keter XXL 230 Gallon Deck Box when raw volume on a patio is the priority, and the Suncast BMS4700 when the only available space is a narrow passage down the side of the house.
Sierra Daniels
Sierra's background is in landscape design and nursery retail. She focuses on lawn and garden equipment, outdoor furniture and gear durability, weighing published specs against how materials actually hold up outside.
