New Granny Flat Rules Make It Easier for Kiwis to Build at Home

Big changes have arrived for homeowners across New Zealand, with new legislation now making it much easier to build a granny flat on your property.

From 15 January 2026, many standalone granny flats can now be built without needing a full building consent or resource consent, helping families create extra living space faster and more affordably.

What Is a Granny Flat?

A granny flat is a small, self-contained home built on the same property as an existing house. They’re often used for extended family, adult children, rental income, or guest accommodation.

What’s Changed?

Under the new rules, homeowners can now build a granny flat of up to 70 square metres without going through the traditional consent process, as long as certain conditions are met.

The new rules mean:

• Granny flats can be built faster with less paperwork
• Homeowners can save thousands in consent and compliance costs
• The build process is more straightforward and streamlined
• More families can create flexible living options on their own property

The aim of the change is to help increase housing supply and give Kiwis more options when it comes to multigenerational living and rental opportunities.

What Conditions Still Apply?

Although full consents are no longer required, granny flats must still:

• Meet the New Zealand Building Code
• Be simple, single-storey standalone homes
• Be built or supervised by licensed building professionals
• Have a Project Information Memorandum (PIM) lodged with council before work starts

Councils may also still apply development contributions, depending on the location.

Why It’s Good News for Homeowners

With housing demand continuing across Canterbury and the wider country, these changes open the door for more people to make better use of their land.

Whether it’s space for extended family, a home office, or an additional income stream, granny flats are becoming a popular and practical solution, and now they’re easier than ever to build.

If you’re considering adding a granny flat to your property, it’s worth speaking with your builder and local council early to understand how the new rules apply to your situation.