Thinking about adding a 70m² granny flat in Hamilton, Waipā (Cambridge / Te Awamutu / Pirongia / Kihikihi) or the wider Waikato?
From 15 January 2026, a new national exemption can allow certain single-storey, standalone dwellings up to 70m² to be built without a building consent — as long as strict conditions are met.
This exemption is nationwide, and the same core rule set applies across New Zealand. What can vary by location are local planning rules and site constraints.
Related: Read our 2026 rules guide for 70m² granny flats in Hamilton & Waipā.
Important: “No building consent” does not mean “no council process”. You’ll still need to follow the required steps (including a PIM and council notifications) and meet the planning rules for your property.
Get in touch to discuss your site and we’ll confirm the best pathway for your property.
What Counts As A 70m² Granny Flat
In this context, a granny flat is a small standalone dwelling — a separate, self-contained building that sits on the same property as an existing home.
The exemption is intended for builds that are generally:
Standalone and up to 70m²
Single-storey
Simple in design, built to the Building Code
Carried out or supervised by licensed building professionals
Notified to council before you start and when you finish
Commonly requires at least 2m from boundaries and other buildings (confirm via PIM / council guidance for your site).
Can It Be Built On-Site Or Prefabricated?
Yes — both on-site builds and prefabricated / modular builds can work.
The key is that the finished dwelling still needs to:
Meet the exemption conditions,
Meet the Building Code, and
Follow the required council steps (PIM + notifications + completion documentation).
Prefabricated note (Waipā): Waipā notes that if your granny flat is built off-site, you still apply for a PIM for the final location.
Deciding between prefab and an on-site build? See our Waikato guide to prefab vs on-site granny flats (and common pitfalls).
How It Works Locally (Hamilton & Waipā Examples)
The 70m² exemption is a national rule set and applies across New Zealand. The core steps are the same, but local planning rules, site constraints, and council admin details can vary. Below are examples from Hamilton and Waipā to show what councils typically look for.
If You’re In Hamilton (Hamilton City Council)
Hamilton City Council provides guidance for small standalone dwellings where exemption conditions are met. This typically includes:
Applying for a PIM before any work starts
Ensuring the design is Building Code compliant and meets the “simple design” criteria
Completing the required council notifications and providing the required documentation when finished
Confirming whether development contributions apply for your site/project
If You’re In Waipā (Waipā District Council)
Waipā’s guidance highlights a few key points homeowners should understand early:
A PIM is required before any building starts, and a PIM is not an approval
Councils generally do not inspect or sign off exempt builds — you’re responsible for meeting the exemption conditions and the Building Code
The exemption does not apply to sleepouts, garages, tiny houses on wheels, buildings over 70m², or conversions of existing structures
Development contributions may apply and are typically confirmed through the PIM process
Outside Hamilton Or Waipā? The same national exemption may still apply — the best next step is confirming your local planning rules and site constraints via a PIM and council guidance.
What Areas Do You Cover?
Hamilton, Waipā (Cambridge/Te Awamutu), Matamata-Piako (Morrinsville/Matamata/Te Aroha), Waikato District (Te Kauwhata/Raglan/Ngaruawahia), South Waikato (Tokoroa/Putāruru), Ōtorohanga and surrounding areas.
What If I’m Outside Of These Areas?
We can often support granny flat planning and drawings remotely anywhere in New Zealand — provided you can supply clear photos, measurements, and any available property records. If a site visit is required, we’ll let you know early.
Our Simple Process
Stage 1: Define Your Requirements
We’ll help you get clarity on:
Who it’s for (family, rental, guests, work-from-home)
Layout and rooms (studio vs 1–2 bedroom)
Your preferred build approach (on-site vs prefab)
How your site may impact placement, access, privacy, and services
Stage 2: Contact Us
Send through your address and any helpful info (site photos, a rough sketch, existing plans if you have them). We’ll tell you what we need next and whether your project is likely to suit the 70m² pathway.
Stage 3: We Put A Plan In Place
We map the pathway and prepare documentation to suit your location:
Concept plan(s) and layout options
Guidance on the PIM + council notification steps
Build-ready drawings aligned to the Building Code and exemption conditions
Coordination with licensed professionals as required
FAQs (Hamilton, Waikato & Waipā)
Do I need a building consent for a 70m² granny flat?
Not always. From 15 January 2026, some single-storey, standalone dwellings up to 70m² may be built without building consent if all exemption conditions are met.
Use our checklist to see if your project is likely to qualify.
Do I still need to involve council?
Yes. You generally need to:
apply for a PIM before you start, and
notify council before building begins and once it’s completed (and provide required documentation).
Is a PIM an approval?
No. Waipā is explicit that a PIM is not an approval — it provides property information and flags constraints, but it doesn’t “sign off” the build.
Can the granny flat be prefab?
Yes, provided the final result meets the exemption conditions and you still complete the PIM / notification / documentation steps. Waipā notes that off-site builds still require a PIM for the final location.
Are inspections done by council?
Waipā notes councils do not inspect or check builds done under this exemption. That’s why getting the design and licensed supervision right matters.
Does the exemption apply to sleepouts, garages, tiny houses on wheels, or converting an existing building?
Waipā’s guidance says no — the exemption doesn’t apply to sleepouts, garages, tiny houses on wheels, buildings over 70m², or conversions of existing structures.
Will I need to pay development contributions?
Development contributions may apply and are assessed by your local council (including Hamilton, Waipā and other districts).
Do I still need resource consent?
Sometimes. Waipā notes resource consent may still be needed depending on your site and rules that apply. We can flag likely issues early once we know your address.
What do you need from me to work remotely?
Clear site photos, rough measurements, and any existing plans/LIM info help us confirm feasibility quickly. If a site visit is required, we’ll tell you early.
Ready To Plan Your Granny Flat In Hamilton, Waikato Or Waipā?
If you’re considering a 70m² granny flat — whether it’s for family, guests, or rental income — we can help you confirm the right pathway and prepare the plans and documentation needed for your site.
Contact us today to discuss your granny flat project.
Specialises in renovations, extensions, and new builds across the Waikato. We deliver innovative designs and expert craftsmanship to bring your vision to life. Contact us today to start your project!
