Do You Need a Site Plan for a Shed in New Zealand?

Adding a shed is one of the most common home improvement projects in New Zealand. A shed can be used for garden tools, bikes, storage, hobbies, equipment, or general household overflow. But before you build, it is worth asking a simple question:

Do you need a site plan for a shed in New Zealand?

The answer depends on the size of the shed, where it will be placed, how it will be built, and whether your local council needs to check building consent, resource consent, boundary setbacks, drainage, easements, or other site rules.

Some sheds may not need a building consent. But even when a shed is exempt from building consent, a site plan can still be useful. It helps show where the shed will sit on the property, how close it is to boundaries, and whether it affects access, services, drainage, trees, or neighbouring properties.

Does a Shed Always Need Building Consent in New Zealand?

No. A shed does not always need a building consent in New Zealand.

MBIE’s Building Performance guidance explains that some detached, standalone buildings may be exempt from building consent under Schedule 1 of the Building Act. This can include small garden sheds, greenhouses, cabins, and similar detached buildings when the project meets the relevant exemption conditions.

However, the exemption is not automatic just because the structure is called a shed. The shed must fit the rules for the relevant exemption. Size, height, location, use, construction method, and boundary distance can all matter.

Small Sheds Under 10 Square Metres

Small detached buildings not exceeding 10 square metres may be exempt from needing a building consent if they meet the relevant Schedule 1 conditions.

MBIE describes this exemption as covering small detached buildings such as garden sheds, greenhouses, cabins, or sleepouts that do not exceed 10 square metres in floor area.

Even for a small shed, you should still think carefully about:

• Where the shed will sit on the property
• Whether it is close to a boundary
• Whether it affects stormwater or drainage
• Whether it is near an easement or underground service
• Whether local district plan rules apply
• Whether the shed will be safe, durable, and suitable for the site

A simple site plan can help answer these questions before you start building.

Sheds Between 10 and 30 Square Metres

Sheds between 10 and 30 square metres may also be exempt from building consent in some situations, but the conditions are more specific.

MBIE gives different exemption pathways for single-storey detached buildings between 10 and 30 square metres, including buildings made from lightweight materials and buildings where design or construction work is carried out or supervised by a Licensed Building Practitioner.

This means homeowners should not assume every 20 square metre or 30 square metre shed is automatically exempt. You need to check which exemption applies and whether your shed meets every condition.

What About the 1 Metre Boundary Setback?

Boundary distance is one of the big shed questions.

MBIE has noted changes to setback conditions for exempt single-storey detached buildings up to 30 square metres. The updated guidance says setback-distance conditions have been removed for buildings under 10 square metres, while buildings from 10 to 30 square metres have a minimum 1 metre setback condition.

That makes the site plan especially useful. If your shed is 10 to 30 square metres, a site plan can clearly show the distance from the shed to the side, rear, and front boundaries.

Without a plan, it is easy to misjudge the boundary distance. A shed that looks “far enough away” in the backyard may not actually meet the required setback once measured properly.

Do You Need a Site Plan If the Shed Is Exempt?

Not always. But a site plan is often a smart idea.

If your shed is very small, far from boundaries, away from services, and clearly not part of a consent application, you may not need a formal site plan.

But if the shed is close to a fence, driveway, easement, drainage line, shared access, tree, retaining wall, or neighbouring property, a site plan can help you avoid mistakes.

A site plan can also be useful if:

• You want to check local council rules before building
• You need to confirm setbacks
• You are applying for building consent
• You are applying for resource consent
• You are submitting information to council
• You are working with a builder or shed supplier
• You want a clear record of where the shed is located

Building Consent vs Resource Consent for Sheds

This is where many homeowners get caught.

A shed may be exempt from building consent, but that does not always mean it is exempt from resource consent or local planning rules.

Building consent is mainly about Building Code compliance. Resource consent and district plan rules are more about land use, setbacks, height, site coverage, natural hazards, heritage rules, neighbourhood effects, and local planning controls.

For example, your shed may be small enough to avoid building consent, but it could still raise questions if it is:

• Too close to a boundary under local planning rules
• Too tall for the area
• Within a required yard
• In a flood hazard area
• Near a protected tree
• On or near an easement
• In a heritage or special character area
• Adding too much site coverage

A site plan helps you check these issues because it shows the shed in context with the whole property.

What Should a Shed Site Plan Show?

A good shed site plan should be clear, simple, and easy to understand. It does not need to look complicated, but it should show the details that matter.

Your shed site plan may include:

• Property boundaries
• Existing house or main dwelling
• Existing garage, driveway, paths, decks, or other structures
• Proposed shed location
• Shed dimensions
• Setback distances from the shed to property boundaries
• Distance from the shed to other buildings
• Street frontage
• Driveway or accessway
• North point
• Scale
• Easements, if relevant
• Stormwater or drainage features, if relevant
• Services, if known
• Trees, retaining walls, or other site features if relevant

The goal is to make it obvious where the shed will go and whether it creates any spacing, access, or compliance issues.

Why Setbacks Matter for a Shed

Setbacks are the distances between the shed and property boundaries or other site features.

They matter because sheds can affect:

• Fire separation
• Neighbouring properties
• Access for maintenance
• Stormwater runoff
• Outdoor space
• Site coverage
• Future building work

If your shed is close to a boundary, council may need to understand the exact distance. A site plan helps show this clearly.

Where Should You Place a Shed?

Before deciding where to place your shed, think about more than convenience.

A good shed location should consider:

• Access from the house or driveway
• Distance from side and rear boundaries
• Drainage and ground slope
• Sunlight and shading
• Nearby trees and roots
• Underground services
• Stormwater flow
• Future extensions or landscaping
• Neighbouring windows or outdoor areas
• Maintenance space around the shed

Putting the shed in the wrong location can create problems later, especially if it blocks access, sits over services, or creates drainage issues.

Common Shed Site Plan Mistakes

Many shed-related problems are simple mistakes that could have been avoided with a clearer plan.

Common mistakes include:

• Not showing the property boundaries
• Not measuring the shed setback from the boundary
• Using a rough sketch with no scale
• Forgetting the driveway or accessway
• Placing the shed over an easement
• Ignoring stormwater runoff from the roof
• Not showing existing buildings
• Assuming building consent exemption means no other rules apply
• Building too close to a fence
• Not checking local council or district plan requirements

When a Shed Is More Likely to Need Consent or Extra Checks

You should be more careful if the shed is:

• Over 30 square metres
• Used for sleeping or regular occupation
• Connected to plumbing or drainage
• Built close to a boundary
• Located on a steep or unstable site
• Built near a retaining wall
• Located over or near an easement
• Part of a larger building project
• In a hazard, heritage, coastal, or special planning area
• Not built according to the relevant exemption conditions

If any of these apply, it is worth checking with your local council or a qualified professional before construction starts.

Do Kitset Sheds Need a Site Plan?

A kitset shed may still need a site plan, especially if it is being submitted to council or if you need to check placement on the property.

The kitset supplier may provide product drawings, but those drawings usually show the shed itself. They may not show where the shed sits on your land.

That is the job of the site plan. It connects the shed design to the actual property.

Can You Use an Aerial Image for a Shed Site Plan?

An aerial image can be a useful starting point, but it may not be enough by itself.

A proper shed site plan should show clear boundaries, dimensions, shed size, setback distances, existing structures, access, and other relevant site features. A screenshot from an online map usually does not show enough detail for council review.

For planning and consent purposes, the plan should be clear, labelled, and easy to measure from.

Final Shed Site Plan Checklist

Before you build or submit information to council, check whether your shed site plan shows:

• Property boundary lines
• Existing dwelling
• Existing structures
• Proposed shed location
• Shed length and width
• Setback distances to boundaries
• Driveway or accessway
• Street frontage
• North point
• Scale
• Easements, if relevant
• Stormwater direction or drainage, if relevant
• Any important trees, slopes, or retaining walls

Need a Site Plan for a Shed in New Zealand?

A shed may seem simple, but the location matters. A clear site plan can help show your shed location, boundary setbacks, access, existing structures, and other important details before you build.

NZ Site Plan helps New Zealand homeowners prepare easy-to-read site plans for sheds, decks, garages, carports, extensions, driveways, and other residential projects.

Whether your shed needs consent or you simply want to check the layout clearly, a site plan can help you plan with confidence.

Plan well. Build with confidence.

Sources

• MBIE Building Performance: Single-storey detached buildings not exceeding 10 square metres
• MBIE Building Performance: Single-storey detached buildings between 10 and 30 square metres using lightweight material
• MBIE Building Performance: Single-storey detached buildings not exceeding 30 square metres
• MBIE Building Performance: Boundary setback building consent exemption changes
• Simpli: Consent or Not?