Granny Flat Reforms in New Zealand – What Homeowners Need to Know
The Government is moving ahead with reforms to make it easier for New Zealand homeowners to build small standalone dwellings, often called granny flats. These changes aim to reduce red tape while maintaining safety and durability standards.
The Proposal
Under the reforms, certain small standalone dwellings could be built without needing a full building consent, provided they meet strict conditions. This would apply to dwellings such as granny flats, cabins, or tiny homes intended for long-term use.
Proposed Conditions for Consent-Free Builds
According to the Ministry of Business, Innovation and Employment (MBIE)*, the exemption is likely to apply only if:
- Size limit – The dwelling is up to 60 m² floor area.
- Height limit – No more than 1 storey high, with a maximum building height of 5 m.
- Foundation – Built on a slab-on-ground or pile foundation (no complex or high-risk structures).
- Design compliance – Must follow an Acceptable Solution or Verification Method from the Building Code.
- Restricted building work – Key structural and weathertightness elements must be done or supervised by a licensed building practitioner.
- Utility connections – Any water, wastewater, stormwater, or power connections must meet local authority requirements.
These conditions are designed to keep builds simple, safe, and consistent with housing standards.
Why the Change Matters
- Flexibility for families – Easier to provide space for older relatives or younger family members.
- Housing supply boost – Adds more small dwellings into the market.
- Lower costs and faster timelines – Avoids lengthy and expensive consent processes.
Important Caveats
- Not law yet – These rules are still proposals. Final details and start dates are not confirmed.
- Local rules still apply – Councils may still require planning or resource consent, particularly for zoning, density, or services.
- Ongoing safety standards – Even without building consent, work must meet the Building Code.
What Homeowners Should Do Now
- Check official updates – Follow MBIE’s Building Performance site for confirmed details.
- Talk to your council – Understand your district plan and infrastructure rules.
Plan ahead – Design with the proposed limits in mind, but don’t start building until the reforms take effect.
Can Jim’s Handyman Help?
Some of our handymen are Licensed Building Practitioners, and all are skilled, insured, and ready to help. Whether it’s planning a granny flat or tackling jobs around your property, we can advise what can be done directly and what may need LBP involvement.
Common Questions
1. What is the maximum size for a granny flat under the new rules?
The proposal sets the limit at 60 m². Anything larger would still require building consent.
2. Can I build a two-storey granny flat without consent?
No. The exemption only applies to single-storey dwellings with a maximum height of 5 m.
3. Do I still need a licensed builder?
Yes, for restricted work such as structural framing and waterproofing. A licensed building practitioner must carry out or supervise this work.
4. Will I need council approval for plumbing and drainage?
Yes. Even if building consent is not required, connections to water, wastewater, and stormwater systems must comply with council requirements.
5. When will the changes take effect?
The Government has signalled the reforms but has not yet finalised dates. Until then, existing building consent rules remain in place.
