How to Build a Garden Shed in NZ

Having heaps of hobbies means having heaps of equipment to match. If your garage or closet is starting to burst with gardening tools and biking gear, it might be time to invest in a durable garden shed. Let’s go over how to choose and build a prefabricated garden shed.

How to choose a garden shed

Size and design

Let’s run through the basics of choosing the right shed for you. Pick a size and design by thinking about these three factors:

What will you be using the shed for? Is the shed your only storage area, or will it be in support of your overflowing garage space? How about making a workshop for your DIY projects?

How much of your outdoor area are you willing to devote to the shed? This will dictate the size of your shed.

What will you be storing in the shed? Your items will need to fit not just into the shed itself, but also through the door. Do you need a double door opening, or will a single door be enough?

Trade Tested’s collection features sheds in sizes from 1.55×0.79m to 5.31×2.16m, offering options for every Kiwi homeowner.

Material

Material matters when you’re picking out a garden shed for your property. At Trade Tested, we offer durable sheds in three popular building materials:

Steel

Steel is a popular choice for sheds in NZ because it is light, easy to install, and stays flat without warping or fading. The strength and corrosion resistance of galvanised steel mean your shed will stand the test of time without much maintenance.

Metal wall cladding holds up well against New Zealand’s harsh conditions, while steel framing adds strength and stability to the shed. Our metal sheds are available in a wide range of colours and sizes to suit your needs.

Wood

Wooden sheds have a real classic look—the aesthetic appeal can’t be underestimated. Sitting in your garden or backyard, the shed won’t just be a functional space but will also have an impact on its surroundings and your home.

Wooden sheds require some maintenance; without regular care, the shed could deteriorate over time. Think about how much time you’ll have to maintain the shed. While it won’t take long, it’ll be another thing to add to your to-do list.

Wooden sheds tend to cost more, but they can be well worth the cost if you appreciate the aesthetics. Browse our range of Nordic kiln-dried wood sheds.

Resin

Resin sheds are the ultimate in lightweight durability. The material doesn’t fade or crack, and weather-tight construction ensures your contents always stay dry.

Resin sheds are easy to manufacture, and with the huge range of configurations, sizes, and colours, you can easily find the perfect shed for a specific need. Explore our selection of cost-effective resin sheds.

How to choose a garden shed foundation

Before you set up your shed, you’ll need to lay down a sturdy foundation or platform. Here are some of the most common foundation types in New Zealand.

Concrete foundation

Pouring a 100mm recessed concrete floor gives you a solid shed foundation, providing a robust platform that will last for years. Of course, you can’t move the shed to a different location once you’ve poured the slab, so take your time planning this option!

The shed’s frame can be attached to the concrete slab using 8mm bolts and a series of clamps. Plans are provided by the shed manufacturer.

Timber base

Keeping it simple can be good if you need to move your shed over time, or even move houses! A wooden substrate is light, practical, and a great foundation type for sheds.

With all timber bases, it’s essential to consider how windy your region is. Use pegs to secure the wooden floor to the base so that it doesn’t lift off.

Prefer a ready-built option? Trade Tested has a range of pine timber flooring kits ready to go.

Raised floor foundation

For a basic, budget-friendly option, add timber or plywood on top of a steel-raised foundation frame. The raised design keeps the floor off the ground and has the flexibility to be moved anywhere on your property.

Equipment you’ll need

Any kitset shed should come with all the required materials, but you’ll still need some tools of your own to get the job done:

Safety or work gloves

Screw gun or battery drill

Screwdriver

Tape measure

Ladder

For metal sheds, you’ll also need a riveter and sealant or caulking gum. For wooden sheds, you’ll also need a hammer, saw, knife, pliers, and water level.

How to build a garden shed

Putting together a kitset shed is easier than you think. With some help, the assembly process usually only takes 1-2 days, perfect for a weekend project.

Step 1: Position the shed

Find a level surface to place your shed. Consider your shed’s intended use, and choose a location that’s convenient without being obstructive. Your shed must be at least its own height away from other buildings and fences.

Step 2: Prepare the materials

Carefully unpack your kitset and check that you have everything you need. If you’re building a wooden shed, you’ll need to treat your floor boards, windows, and doors with a wood sealer to prevent moisture in the future.

Step 3: Lay the foundation

Prepare a solid, flat foundation for your shed. You can pour a concrete base for a permanent option or make a timber foundation if you want the flexibility to move your shed around.

Step 4: Assemble the shed

Review the included assembly instructions and put the shed together, connecting the frame, walls, roof, doors, and windows. Make sure you have a spare pair of hands. Arrange for your partner, a friend, or a family member to help out for the day.

Step 5: Customise the shed

Now that you’ve assembled the shed, it’s time to make it yours. Add some shelving for space to place your building tools, or attach wall racks to maximise storage area for rakes and shovels. If you have a wooden shed, you can stain or paint it to protect it from moisture and UV radiation.

Short on time or lacking the DIY know-how? Trade Tested can help you connect to a local assembly service. Just contact our team for more information.

Shop cost-effective garden sheds at Trade Tested

Upgrade your property with a secure garden shed from Trade Tested—you’ll never lose track of your tools and gear again. Explore our range of prefabricated sheds today. Our friendly team is happy to help with any questions you may have about buying a shed or the assembly process.

What our customers think

“Great value for money. Stoked.”

“Very easy to assemble. A great-looking shed. Watertight. Great!”

“Easy installation, affordable, and good looking. Can’t find anything else at this price.”

Frequently asked questions

Is it easier to build a shed or buy one?

No matter your skill level, installing a kitset shed will almost certainly be easier than constructing a custom-built shed from scratch. Frames and cladding come pre-cut, all assembly materials and instructions are included, and everything is guaranteed to fit.

How do you make a foundation for your garden shed?

You can pour a concrete base, assemble a timber foundation, or create a steel-raised floor frame with timber or plywood on top. Trade Tested offers simple timber foundation kits to help you save time.

Do you need a building consent to build a garden shed in NZ?

In most parts of New Zealand, you won’t need local council consent to install a single-storey detached building (like a shed) under 10m², as long as it’s set back at least the height of the roof from nearby buildings and fences. Most of Trade Tested’s sheds are under this size, though you may need to enquire about local building codes for the larger sheds.