Resin Storage Sheds for the Backyard: Six Outdoor Options Compared

A lawn mower, two bikes, a bag of potting soil, and a pile of folding chairs can crowd a garage until the car no longer fits. A resin shed is the usual answer for people who want extra storage without painting, sealing, or replacing rotted boards every few years. Resin panels do not rot or attract termites, and they snap together in a weekend, but sizes and layouts vary a lot.

The six sheds below range from tall vertical units for a narrow side yard to wider horizontal models that swallow a mower. You will see a quick comparison, four rules for sizing and site prep, short reviews drawn only from what each name says, and a list of common mistakes. As of 2026, local permit and setback rules are often the biggest hurdle, not the shed itself, so check them before you order.

Quick Picks

How to Choose

Measure what you need to store, then add a margin

Add up the footprint of your biggest items, such as a riding mower or a wheelbarrow, and then add about 25 percent for walking room and shelving. A shed with around 50 square feet of floor space handles most mowers and tools, while sheds under 20 square feet are best for hand tools and bins. Height matters too: a door clearance of at least 6 feet keeps tall items workable.

Prepare a level, drained base

Resin sheds need a flat base, either a poured slab, compacted gravel, or a treated wood frame. A good rule of thumb is a base that is level within a quarter inch over the footprint, and slightly larger than the shed floor to shed water. Unlevel ground leads to sticking doors and gaps that let in rain.

Check wind and snow ratings

Resin panels are lighter than wood, so look for anchoring kits and a stated wind or snow load. If you live somewhere with heavy snow or storms, plan to anchor the shed to the base. Roofs with a steeper pitch shed snow better, and some models include skylights or vents that help with moisture.

Look at the door, floor, and shelving

Double doors are easier for large equipment than a single narrow door. Check whether a floor is included, since some models require you to build your own base. Add shelves or hooks to use wall height, and consider a lockable latch with a padlock hasp if you store valuable tools.

Our Picks Reviewed

Keter Manor Outdoor Storage Shed

Manor in the name hints at a larger, more house-like design in the Keter shed family. Bigger sheds in this class are meant for households that treat the shed as a second garage.

• Pro: a larger shed has room for mowers, bikes, and shelving in the same building.
• Pro: resin construction removes the need for painting and wood treatment.
• Con: bigger sheds need a bigger base and may require a permit.

Skip it if you have a small yard or only need space for hand tools. Check your local setback rules first, since larger buildings are often the ones that trigger permit requirements. Also think about how you will get the heavy boxed panels to the back of the yard, because a big shed arrives in several large cartons that are awkward to carry through a narrow gate.

Keter Factor Outdoor Storage Shed

Factor is a named model within the Keter outdoor shed range, and it fits the category of mid-size resin storage for tools and garden gear. It is a practical middle path.

• Pro: a resin shed does not rot, so ongoing maintenance is limited to cleaning.
• Pro: Keter offers multiple sizes in related lines, which makes it easier to compare.
• Con: the name does not state dimensions, so you must check the exact size on the listing.

Skip it if you need a specific footprint and want the name to tell you at a glance. Anyone storing a riding mower should check the door width before deciding. It is a sensible mid-range option for people who have outgrown a deck box but do not need a full garage substitute, provided they confirm the interior height and the roof pitch for snow.

Suncast Tremont Storage Shed

Tremont is a model name from Suncast, and the label Storage Shed is plain and clear. It sits in the classic-shaped category, with a roof peak and standard door layout.

• Pro: a classic shape blends easily into most yards.
• Pro: resin-style construction avoids rot and painting.
• Con: the name offers no size detail, so verify capacity against your storage list.

Skip it if you want a super-tall or narrow vertical footprint. People with uneven yards should also plan for base preparation before they commit, since any shed of this kind needs a level surface. Since the name is short, spend time on the product page confirming the floor dimensions, door opening height, and whether shelving or a floor kit is included, as these details decide whether your mower and tools actually fit.

Rubbermaid Large Vertical Resin Storage Shed

This name gives three useful facts: it is large, it is vertical, and it is resin. Vertical sheds are the standard choice where floor space is tight, such as along a fence or beside a house.

• Pro: a vertical layout saves ground space while still offering tall interior room.
• Pro: resin construction suits wet climates where wood would rot.
• Con: tall narrow sheds can be awkward for wide items such as mowers and wheelbarrows.

Skip it if your main need is a mower or large bikes; a horizontal shed is the better fit. Also skip it if you live in a very windy area and cannot anchor a tall, narrow shed. A good use for this shape is garden tools, ladders, and long-handled items that lean against the wall, so list what you plan to store before deciding whether the interior width will be enough.

Lifetime Outdoor Storage Shed

The name is generic, which means the product page matters more than the title. Lifetime sells sheds in several sizes, so confirm the exact one before you order.

• Pro: a generic outdoor shed name suggests a general-purpose building for tools and equipment.
• Pro: buying from a brand with multiple sizes makes it easier to scale up or down.
• Con: the name does not tell you the size, floor type, or roof design.

Skip it if you prefer specific model names that signal size and style. This is a reasonable pick only if you will confirm the details before checkout. Compare the footprint, door type, and any included floor panel against your site plan, and make sure the shipped package fits through the route to the build spot in your yard.

Suncast Stow-Away Horizontal Storage Shed

Horizontal and Stow-Away both signal low, wide storage. This shape is suited to bikes, mowers, and bins that are easier to roll in than to lift up.

• Pro: a horizontal layout makes it simple to roll in wide equipment.
• Pro: lower height can help with local height limits and fences.
• Con: horizontal sheds use more ground area than a vertical model.

Skip it if you need tall storage for ladders or long tools. The same applies if your yard is narrow and has little depth to spare. Look at the threshold too, as a raised lip makes it harder to roll wheeled items inside. Bikes, bins, and push mowers are the natural contents, and a ramp or a flat threshold at the door makes loading them far easier than lifting each item over a raised lip.

Which One Fits

• Large yard with mowers and bikes: Keter Manor Outdoor Storage Shed.
• Narrow side yard: Rubbermaid Large Vertical Resin Storage Shed.
• Low wide storage for rolling gear: Suncast Stow-Away Horizontal Storage Shed.
• Classic look for a small garden: Suncast Tremont Storage Shed.
• Mid-size tool storage: Keter Factor Outdoor Storage Shed.

When two sheds seem equal, let the door decide. A wider double door or a low threshold saves effort every single time you pull the mower out, and that daily convenience tends to matter more than a small difference in interior square footage once the shed is built.

For smaller needs, a deck box such as those in our guide to a pool storage box may do the job without a permit, and a shed pairs well with a herb planter area for your potting supplies.

Common Mistakes

• Skipping permit and setback checks before buying.
• Building on unlevel ground and ending up with sticking doors.
• Choosing a shed without measuring the biggest item inside.
• Not anchoring a lightweight resin shed in a windy area.
• Forgetting that a floor kit or base may be sold separately.

FAQ

Do resin sheds need a permit?

Often only above a certain size, commonly around 100 to 120 square feet, but rules vary by town.

Is a resin shed better than wood?

It requires less upkeep and does not rot, but wood can be stronger and easier to customize.

How long does assembly take?

Most resin sheds go together in a day or a weekend with two people.

Can I store a mower in a vertical shed?

It depends on the door width, and horizontal sheds are generally easier for mowers. Measure the mower deck width and compare it with the door opening, leaving a few inches on each side so you are not scraping the frame every time you roll it in and out.

Where should I put a shed?

On level, well-drained ground, away from overhanging trees, with clear access to the door. Leave a few feet of working room around the walls so you can reach the panels for cleaning, and avoid low spots where rainwater collects after storms. Facing the door toward the house or the path you use most keeps daily trips short.