Practical site notes before work starts
The 2026 granny flats exemption has changed the conversation for many homeowners. From 15 January 2026, small standalone dwellings up to 70 square metres may be built without a building consent, and the wider reform package also removed the need for resource consent in the qualifying cases described by official Building Performance guidance[1] and the MBIE announcement on the reform[2]. That is a meaningful shift. It can reduce direct approval costs and remove weeks from the programme for the right project.
Project planning note
Treat this article as a practical pre-start notebook for scope, sequencing, approvals, and delivery risk.
Owners, site leads, and project decision-makers
Useful for project owners, site leads, and decision-makers reviewing the next move.
5 min read
Treat this as a pre-start briefing and use the checklist before locking key decisions.
Use this quick review before scope, programme, or procurement hardens.
- Define the operational outcome of the project before locking design and trade packages.
- Resolve approvals, procurement timing, and key interfaces before work accelerates on site.
- Keep change control disciplined so budget movement is visible before commitments are made.
- Use trusted references and specialist advice where compliance or structural risk is involved.
What it has not changed is the need for careful planning. MBIE’s guidance is clear that the exemption only applies where all conditions are met, including a simple design, full Building Code compliance, local council notification before work starts and after completion, and work carried out or supervised by licensed building professionals. For Northland owners, that means the opportunity is real, but so is the risk of getting the early assumptions wrong.
What the exemption does change
The biggest practical change is that some projects now have a faster path to site. If your proposed granny flat is a new standalone dwelling, stays within the 70 square metre limit, and satisfies the exemption conditions, you may be able to proceed without the standard building consent route. For families looking at extra space for relatives, adult children, or rental flexibility, that can make a project more achievable than it was under the older system.
There is also a clear policy signal behind the change. MBIE says the reform is intended to support housing supply and make it easier for people to add small dwellings where they are appropriate. In simple terms, the exemption is meant to remove friction from straightforward projects, not to turn every small build into a paperwork-free exercise.
What the exemption does not change
This is the part owners need to understand properly. A building consent exemption is not the same thing as a compliance exemption. The building still has to meet the Building Code. If the structure, durability, moisture control, drainage, fire safety, or other performance requirements are not properly addressed, the fact that no consent was required will not protect the owner from defects, enforcement issues, insurance questions, or trouble at resale.
The exemption also does not remove the need for qualified people. MBIE’s published guidance states that the work must be carried out or supervised by licensed building professionals. That matters because the legal pathway depends on competent design and execution, not on a loose interpretation of what counts as a small building job.
Just as importantly, the council is still part of the process. Far North District Council states on its non-consented small standalone dwelling guidance[3] that the council must be notified before and after construction, that the Building Code must still be complied with in full, and that resource consent and development contributions may still apply depending on the site and planning rules. Even where the exemption is available, owners should not treat the project as invisible to the local authority.
Why Northland owners still need to plan carefully
Northland projects often look simpler at concept stage than they feel once the real site issues appear. Access, levels, drainage, utilities, wastewater, setbacks, and service connections can all affect the scope, design, and final cost. The same Building Performance guidance also points owners toward project information memorandum forms, records of work, completion documentation, and site-specific planning steps. That is a reminder that a smaller building does not automatically mean a simpler project.
For many owners, the most expensive mistakes happen before the build starts. If you price the job before the services strategy is clear, before the siting is tested, or before the exemption criteria are checked properly, you can end up redesigning the project mid-stream. The exemption can help good projects move faster, but it does not remove the need for due diligence.
A practical way to approach a granny flat project
The safest approach is to treat the exemption as a narrower approval pathway, not as a shortcut. Start by confirming whether the proposed dwelling actually qualifies. Then test the site constraints, utility connections, access requirements, and planning implications early. Make sure the design team and builder understand the exemption conditions, the documentation requirements, and the completion records that will still need to be provided.
If that work is done well, the 2026 change can genuinely make a granny flat project easier to deliver. If it is handled casually, the same project can still become slow, costly, and frustrating.
For Northland owners, the real question is not simply whether a granny flat can be built without consent. It is whether the project has been planned well enough to proceed with confidence. If you want practical advice before you commit to design, pricing, or site works, the Henare Construction team in Whangarei can help you think through the next steps.
