The Government has announced changes that will make it faster, easier, and more affordable to build granny flats across New Zealand. These changes are part of a wider effort to reduce the hurdles that come with current consenting rules under the Building Act and Resource Management Act (RMA).
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So, what’s changing?
‍• Granny flats (also called secondary dwellings) of up to 70 square metres will soon be able to be built without needing a building or resource consent – as long as they meet certain criteria.
• This is an increase from the earlier proposed 60 sqm limit, following strong public support.
• The change applies to standalone dwellings on residential and rural zoned land.

What are the requirements?
To qualify for the exemption, your granny flat must:
• Be simple in design and meet all requirements of the NZ Building Code.
• Be built by authorised building professionals.
• Be notified to your local council before building begins and again once it’s completed. It’s important to note: while building and resource consents won’t be needed, councils will still charge infrastructure contributions through the Project Information Memorandum (PIM) process.

When will this come into effect?
‍- A new National Environmental Standard (NES) is being developed and is expected to be in place by the end of 2025, alongside amendments to the Building Act.
- These changes will not apply to granny flats already under construction or completed before the new rules come into force.

The proposed Legislation:
Building and Construction (Small Stand-alone Dwellings) Amendment Bill

A small stand-alone dwelling must be constructed in accordance with the following:- It meets the requirements for a detached dwelling, as defined in clause A1 of the building code.
- It has a maximum height of 4 metres above the floor.
- It has a floor level up to 1 metre above the supporting ground.
- Its frame is made of lightweight building products, specifically steel or timber.  
Buildings constructed using chiller panels or similar composite panel systems do not meet this requirement and are not eligible for exemption.
- It is at least 2 metres away from any other building or legal boundary.

Characteristics of a Small Stand-alone Dwelling
A small stand-alone dwelling is a building that must meet all of the following characteristics:
- It is stand-alone.
- It is wholly new (not an addition or alteration to existing building work or an existing building).
- It has a net floor area equal to or less than 70 square metres.- It has a single storey only.
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How can we Help?

Customisable and Convenient At Compac Homes, we are excited about how these changes enhance our ability to offer customisable, high-quality granny flats. Our designs are adaptable, ensuring no two homes are the same, and we’re here to help you through the streamlined process. Whether you need a cosy space for relatives or a smart rental solution, our Granny Flats provide flexible, stylish options that now come with easier building and consenting pathways.

Ready to Begin? The reforms are setting the stage for a smoother and more accessible building experience for Granny Flats across New Zealand. Schedule your consultation today to start planning your bespoke Granny Flat with Compac Homes, tailored just for you.