The short answer is: Sometimes.

A tiny home in New Zealand may require a building consent, may qualify for a building consent exemption, or may fall under a different set of rules depending on how it is designed and used.

And building consent is only one part of the picture.

You may also need to consider:

• Resource consent and planning rules
• Property zoning
• Site coverage and setbacks
• Natural hazards
• Water and wastewater
• Service connections
• How the building will be used

Recent changes have made it easier to build some small standalone dwellings, but they have not made every tiny home automatically consent-free.

The information below reflects the rules current at September 2026.

Building consent vs resource consent – what's the difference?

These two terms are often confused, but they deal with different things.

A project can therefore be exempt from building consent but still have planning requirements, or vice versa. Building Performance recommends checking both before work begins.

So when does a tiny home need building consent?

There isn't a special legal category that automatically makes something consent-free simply because it is called a tiny home.

MBIE's tiny-house guidance notes that a tiny house can potentially be a building, a vehicle, or both, depending on its circumstances. The Building Act and Building Code can therefore still apply even where a home is transportable or movable.

For a conventional dwelling, building work will generally require consent unless a specific exemption applies.

The most important exemption for many tiny-home buyers in 2026 is the new small standalone dwelling - commonly called the granny flat exemption.

 

What is the 70m² granny flat exemption?

From 15 January 2026, certain small standalone dwellings can be built without obtaining a building consent.

To qualify, the dwelling must meet all of the exemption conditions. At a high level, it must be:

• New
• Standalone
• Single storey
• No more than 70m² floor area
• Designed and built in accordance with the exemption requirements
• Built or supervised by appropriately licensed building professionals
• Compliant with the New Zealand Building Code

Those are only the headline requirements — the legislation contains additional conditions around matters such as design, construction, setbacks, services and professional responsibilities.

So the fact that a tiny home is under 70m² does not, by itself, make it exempt from building consent.

 

Does "no building consent" mean no council involvement?

No.

This is one of the most important things to understand about the new exemption.

Under the current granny flat exemption pathway, the homeowner must obtain a Project Information Memorandum (PIM) from the council and provide required information before applicable building work begins. Documentation must also be supplied to the council once the project is completed.

The exemption removes the normal building-consent approval and inspection process for a qualifying dwelling.

It does not remove:

• Building Code requirements
• Licensed professional requirements
• Documentation requirements
• Site requirements
• Council notification
• Other applicable legislation

In other words, it is a different compliance pathway, not an absence of compliance.

 

What about resource consent?

This also changed significantly in 2026.

The National Environmental Standards for Detached Minor Residential Units (NES-DMRU) came into force on 15 January 2026.

Under these national rules, one detached minor residential unit per site can be a permitted activity in residential, rural, mixed-use and Māori-purpose zones if it meets the applicable standards and requirements.

This can mean no resource consent is required for a qualifying unit.

Key national standards include:

• Maximum floor area of 70m²
• At least 2 metres separation from the principal dwelling
• Setback requirements from property boundaries
• Building coverage requirements

For residential zones, the national standard generally requires at least a 2 metre boundary setback. Rural zones have different setback requirements.

However, that still doesn't mean every 70m² dwelling is automatically permitted.

 

Do local council rules still matter?

Yes.

The new national rules create much greater consistency across New Zealand, but some district and regional plan provisions still apply.

Depending on the property, these can include matters relating to:

• Natural hazards
• Outstanding natural features and landscapes
• Heritage or culturally significant sites
• Earthworks
• Site-specific infrastructure
• Drinking water
• Wastewater
• Stormwater
• Reverse sensitivity
• Applicable regional plan rules

The NES-DMRU specifically preserves rules relating to these matters, so a property affected by them can still require additional assessment or resource consent.

That is why checking the actual property, rather than relying simply on the size of the cabin, remains important.

What are the setback rules for a 70m² minor dwelling?

For a qualifying detached minor residential unit under the national planning standard, some of the headline requirements are:

Residential zones

Generally:

• At least 2 metres from the principal residential unit
• At least 2 metres from front, side and rear property boundaries
• Total site building coverage no greater than 50%

Rural zones

Generally:

• At least 2 metres from the principal residential unit
• At least 10 metres from the front boundary
• At least 5 metres from side and rear boundaries
• Building coverage must meet the applicable district plan

Different rules apply in mixed-use and Māori-purpose zones. A district plan can also contain a more lenient standard in some circumstances.

The way these setbacks are measured was clarified nationally in September 2026, so current information should be used when assessing a site.

Does having a kitchen or bathroom mean you need building consent?

This depends on which exemption pathway you are using.

For some traditional Schedule 1 exemptions covering detached buildings, the building cannot contain sanitary facilities such as a kitchen or bathroom. Retrofitting those facilities can require building consent.

The newer 70m² small standalone dwelling exemption is different. It is specifically designed for a residential dwelling and can include plumbing, drainage, kitchens and bathrooms, provided all of the exemption conditions are met and the work is completed by the appropriately licensed professionals.

So the useful question isn't simply:

“Does it have a bathroom?”

It is:

“What compliance pathway does this particular building and site qualify for?”

What about water, wastewater and other services?

Services are a major part of the consent assessment.

Depending on the compliance pathway and site, you may need to consider:

• Mains water
• Water tanks or on-site supply
• Wastewater connection
• Septic or on-site wastewater treatment
• Stormwater
• Electricity
• Gas, if used

The 70m² exemption contains specific requirements for plumbing, drainage and service connections, and licensed trades must carry out and certify relevant work.

For tiny homes outside that specific exemption, connecting into network water, stormwater or wastewater systems can itself trigger building-consent requirements.

Council development contributions may also apply when another dwelling increases demand on local infrastructure.

Does living in a tiny home permanently change things?

It can.

A simple detached room, sleepout or accessory building is not necessarily assessed in the same way as a self-contained residential dwelling.

How the building will actually be used affects which rules are relevant — particularly where it has its own kitchen, bathroom and services and is intended to function as an independent home.

The new 70m² exemption specifically provides a pathway for qualifying standalone residential dwellings, so permanent residential use is not automatically a problem. But the dwelling and site still need to satisfy that pathway or another appropriate consent pathway.

We cover permanent occupation in more detail in our guide:

Can You Legally Live in a Tiny Home Full-Time in NZ?

Does being transportable mean a tiny home doesn't need consent?

No.

The fact that a building can be transported does not automatically determine its status under the Building Act.

MBIE's tiny-house guidance specifically recognises that a tiny house may be treated as a building, a vehicle, or both, depending on its design, location and use.

If you're buying a completed transportable cabin, it is therefore important to establish how it will be installed and used at its final site and what compliance pathway applies.

Don't assume that “transportable” means “consent-free”.

Does the 70m² exemption apply to any ready-built tiny home?

Not automatically.

The exemption has specific requirements covering the dwelling's design, construction, documentation, professional involvement and final site.

At September 2026, changes intended to make the exemption easier to use with homes built off-site as stock are progressing through Parliament in the Building Amendment Bill, but those changes are not yet the current law.

If you're considering an already-built transportable home and want to use the 70m² exemption pathway, confirm its eligibility before relying on the exemption.

This is particularly important for buyers choosing completed stock rather than commissioning a dwelling specifically for their site.

What should you check before buying a tiny home?

Before committing to a particular cabin, establish:

1. How will the building be used?
   Extra room, sleepout, guest accommodation or permanent dwelling?
2. Does the building require consent or qualify for an exemption?
   Don't rely on floor area alone.
3. Does the property qualify?
   Check zoning, setbacks, building coverage and other relevant site rules.
4. Are there hazards or overlays?
   Flooding, unstable land, heritage and other site-specific matters can change the answer.
5. How will services work?
   Confirm power, water, wastewater and stormwater requirements.
6. How will it get onto the property?
   Site access and final positioning can influence the practical solution.
7. Get the answer confirmed before installation.
   Your council or an appropriately qualified building/planning professional can confirm the pathway for your particular project.

Building Performance places responsibility on the building owner to establish whether proposed work is exempt and to ensure exempt work still complies with the Building Code.

The important point: check the home and the site together

There is no useful universal answer to:

“Do tiny homes need consent?”

A better question is:

“What approvals or exemption pathway apply to this tiny home, for this use, on this property?”

The 2026 changes have created a much simpler pathway for many small standalone dwellings, including some homes up to 70m².

But size alone isn't enough.

Before purchasing, make sure the building, intended use and final site work together from both a building and planning perspective.