Get Ready for Granny Flats: Be Prepared for the New Building Law Changes with Refresh Renovations

Whether you call it a granny flat, granny unit, or the more diplomatic ‘mother-in-law suite’, a self-contained unit or ‘sleep out’ on your property can be a boon for your house value, as well as provide much needed flexibility to your family living arrangements. 

In the past, obtaining council approval for a granny flat could be expensive and complicated, but exciting new legislation has been announced that changes the game when it comes to building a second house on your property. With the official law expected to change mid-to-late 2025, Refresh can help you get ready to take advantage of the changes by designing and delivering an accessory dwelling unit for your property.

Our experts have covered some of the key questions homeowners have about new granny flats and the legislations change, so read on for helpful advice and inspiration, or get in touch with your local Renovation Consultant for personalised advice – we’re here to help!

What is the new law around building granny flats?

Granny flats, cabins, a minor dwelling with garage, loft style granny flat…there are plenty of different names for an extra self-contained unit or home on your property. But until now, there has been a lack of consistency across district plans about what is allowed and what isn’t, and the resource consent process could be frustrating and expensive.

The new law intends to make it much easier to provide granny flat living. It will introduce a National Environmental Standard (NES) to require all councils to permit the construction of granny flats up to 60m² without the need for consent. You will only be required to notify your council of the new dwelling.

This simplified process will increase housing options, speed up the building process, and save you money. It is estimated to save up to $6,500 in standard building and resource consenting fees per build alone.

What are the benefits of building a granny flat?

Granny flats aren’t just for grannies! A self-contained unit is a great housing solution for seniors, adult children, or other family members. It could also be used as a rental unit to provide additional income, not to mention the added value it brings to your property. It’s a great investment that will provide you options and flexibility. 

How can Refresh help with your granny flat project?

Refresh specialise in providing exceptional renovation services and can expertly manage your granny flat project from the initial design right through to final delivery. Many homeowners are interested in the benefits of a self-contained granny flat, but don’t want to deal with all the stress that comes with a home renovation. That’s where Refresh comes in. We make the renovation process smooth, straightforward, and stress-free, and we are committed to delivering your project in time and on budget!

We’ve completed hundreds of renovation projects around New Zealand with outstanding results, including stunning extensions like this master suite in Manawatu, this stylish granny flat in Takanini, and this contemporary granny flat build in Wellington. We have an established network of professionals including expert granny flat builders to ensure your project is delivered with top quality workmanship.

What are the different types of granny flats?

There are lots of different ways of achieving a self-contained unit or granny flat, and the good news is that we can help with them all! The best style for you will depend on your home, property, available space, and budget, but ideas to consider include:

• Home extension granny flat
• In home granny flat
• Detached granny flat
• Granny flat with garage
• Granny flat with loft
• Double garage with granny flat above 

‍Our experienced consultants can help design a granny unit that is perfect for you!

How much does a granny flat cost?

The cost of your granny flat will depend on the size of the build, the materials you choose, whether you are building a new dwelling, or using an existing space such as converting your garage into a granny flat. As an idea, this Franklin property extension used high end finishings and was completely self-contained with its own identity and flair for just under $300,000.

No matter what your budget, your personal Renovation Consultant will work hard to help you achieve your renovation goals. Get in touch to see what’s possible!

Do granny flats need council approval?

Homeowners often ask us “Can I build a granny flat on my property?” The answer to that question is about to become a lot simpler! Currently, you would need to go through a council consent process including resource and building consent. However, the adoption of new legislation will mean that any rural or residential property in New Zealand will be allowed to build a simple, standalone home up to 60m2. There will still be safeguards to ensure they are safe, healthy, and durable homes. Refresh can help you work through all requirements to build a granny flat that is perfect for your needs, tastes, and budget.

Ready to build?

If you want to take advantage of the new and simplified process to build a granny flat, then get in touch with your local Refresh Consultant. They offer free, one-hour consultations to answer all your questions and help you understand the law changes.