Imagine this: your friend is sitting on the couch one evening when his wife gently drops a bombshell –“Honey, I think Mum and Dad should move in with us. They’re getting older, and it would be good to have them close by to keep an eye on them.”
Your friend loves his in‑laws… in small doses. But the idea of sharing a kitchen, bathroom, and every waking moment with them? That’s a bit too close for comfort!
Until now, this kind of situation often forced families into an all‑or‑nothing choice: move in together under one roof or keep living separately with all the complications that come with it. But thanks to New Zealand’s new laws for small standalone dwellings, families like your friend’s suddenly have far more flexible (and harmonious) options.
New Zealand has recently ushered in significant changes to its building laws that directly impact relocatable cabins, tiny homes, and other small standalone buildings. These shifts are designed to ease regulatory hurdles, speed up construction, and support housing flexibility.
At the heart of the reform is a major update to the Building Act and associated planning rules that came into effect on 15 January 2026. Under the new regime, small standalone dwellings (often referred to as “granny flats”) up to 70 m² can be constructed without a traditional building consent. The exemption applies nationwide and replaces the former requirement where most houses and relocatable buildings needed formal consents before construction could begin.
These changes represent a continuation and expansion of earlier building consent exemptions for low-risk detached structures like sleepouts and small cabins, which historically applied to buildings up to around 30 m² without consent.
For Auckland property owners and developers, the updated exemptions offer a pathway to add relocatable cabins or minor dwellings more quickly and cost-effectively. Whether you are planning a backyard guest unit, a home office, a rental space, or a flexible living area, these exemptions can reduce red tape and lower upfront compliance costs, provided you meet the conditions:
- simple, single-storey dwellings up to 70m²;
- must be designed and built by Licensed Building Practitioners (LBPs);
- must meet the Building Code; and
- Council must be notified before starting and after completing construction.
Local planning rules still apply – this means that district plan requirements around setbacks, site coverage, and zoning can trigger resource consent even if a building consent isn’t needed.
Boundary setbacks, heritage or special character areas, or overlays (e.g., coastal or hazard zones) may also impose separate consent requirements.
The new rules create exciting possibilities for homeowners but navigating these changes can be complex. If you are considering a relocatable cabin or a minor dwelling project, our Property Team can help you interpret the latest laws and assess consent requirements to ensure your relocatable cabin project proceeds smoothly and lawfully.
Contact us today to find out more.