Home Renovations ideal renovations

Welcome to our comprehensive guide on turning your Auckland garage into a practical granny flat. This isn’t just about gaining more living space; it’s about adding significant value and functionality to your property. Whether you’re considering this conversion to accommodate family members or as a smart investment, this guide provides all the essential information you need to make informed decisions.


In Auckland, a granny flat is more than just an extra room; it’s a self-contained unit with its own kitchen facilities. This adaptable space can serve various purposes, from offering independent living arrangements for elderly relatives to creating an additional income stream through rentals. However, before embarking on the garage conversion journey, it’s crucial to consider a few key factors.


Deciding to convert your garage into a granny flat requires careful consideration. The suitability of your garage for conversion, your need for extra space, and the potential return on investment are critical factors to evaluate. For many Auckland homeowners, the appeal lies in maximising unused space and enhancing property value, making it an attractive option for expanding living areas in a city where space is at a premium. It’s also an opportunity to potentially create more income through a rental or accommodating a larger family.


Understanding your need for extra space is crucial, especially in the context of New Zealand living. Whether you’re accommodating a growing family, needing a dedicated workspace for remote work, or exploring additional income streams through rentals, your specific requirements will dictate the design and functionality of your granny flat. Here are some popular options for converting your Auckland garage:

● Home Office: With the increasing trend of remote work, a dedicated home office has become more of a necessity than a luxury. Converting your garage into a home office offers a secluded space away from the distractions of the main household, ensuring privacy and focus during work hours. Plus, with the right setup, you can create an inspiring environment that boosts productivity and creativity.

● Media Room: Aucklanders love their movie nights and binge-watching sessions. Converting your garage into a media room can offer an immersive entertainment experience, complete with a large screen, comfortable seating, and soundproofing to keep the noise contained. It’s the perfect spot for hosting movie nights or enjoying gaming marathons without disturbing the rest of the household.

● Game Room: For those who enjoy more interactive entertainment, a game room can be a fantastic addition to your home. Whether it’s a friendly game of pool, a round of darts, or an intense video gaming session, converting your garage into a game room provides the ultimate leisure destination for family and friends to gather and unwind.

● Additional Bedrooms: Auckland’s housing market is known for its competitiveness, and having extra bedrooms can significantly increase the appeal and value of your property. Converting your garage into one or more additional bedrooms can accommodate growing families or provide comfortable guest rooms for visitors, offering flexibility and convenience for your living arrangements.

● Fitness Studio or Gym: Health and wellness are important aspects of Kiwi lifestyle, and having a dedicated space for exercise can make staying fit more accessible and enjoyable. Converting your garage into a fitness studio or gym provides a spacious and private area to install gym equipment, mirrors, and even a sound system for workout sessions at any time of the day, rain or shine.

● Art Studio or Workshop: New Zealanders are known for their creativity and DIY spirit, and transforming your garage into an art studio or workshop can be the perfect way to unleash your talents. With ample natural light, proper ventilation, and storage solutions for your tools and materials, your garage can become a haven for artistic expression and hands-on projects.

● Rental Property: Another option for maximising the potential of your granny flat is to turn it into a rental property. With the demand for rental accommodation on the rise in Auckland, converting your garage into a self-contained unit can provide a steady stream of rental income while also adding value to your property portfolio. Whether it’s a long-term tenant or a short-term rental through platforms like Airbnb, renting out your granny flat can be a lucrative investment opportunity.

Each of these conversion ideas not only maximises the use of your garage space but also enhances your home’s functionality and appeal, catering to the unique needs and lifestyle of Kiwi homeowners.


Understanding the costs involved is essential for planning your garage conversion project in Auckland. Costs can vary widely depending on factors such as the size of the garage, the complexity of the conversion, and the quality of materials used. Here’s a rough breakdown of costs based on Auckland builders’ estimates:

● Basic Conversion: Converting a 30 sqm garage into a room is a popular option for homeowners seeking to maximise space without undertaking extensive renovations. This type of conversion typically involves basic modifications to transform the garage into a functional living area. Costs for a basic conversion can range from $37,000 to $45,000, excluding GST, architect fees, and consent fees.

● Typical Granny Flat Conversion: For homeowners looking to create a self-contained granny flat within their garage, the costs tend to be higher due to the inclusion of kitchen and bathroom facilities. A typical granny flat conversion, spanning 30 sqm, may range from $52,000 to $64,500, depending on the level of customisation and quality of finishes desired.

● Detached Granny Flat: Building a granny flat detached from the main house offers additional flexibility and privacy, but it also comes with a higher price tag. Costs for a detached granny flat can vary significantly based on size, specifications, and site-specific factors. In Auckland, building a detached granny flat may cost anywhere from $90,000 to $150,000, depending on the level of customization, materials used, and site preparation required.

It’s important to note that these are rough guides and costs may vary based on individual project requirements and market conditions. Our team at Ideal Renovations can help with your specific requirement and provide you a transparent budget and quote so you can know what to expect.


Converting your garage into a habitable space generally requires building consent in Auckland, as it involves changing the use of the space from non-habitable to habitable. The process may also require resource consent, especially if the conversion is to a minor dwelling unit. Consulting with our team can provide clarity on the feasibility of your project and the specific consents required.


Seeking professional advice is invaluable in navigating the complexities of garage conversions in Auckland. Our team can help assess the feasibility of your project, design the space efficiently, and guide you through the consent process. Additionally, understanding your zoning and the specific rules that apply to your project is crucial for ensuring compliance and avoiding future complications.


Converting your Auckland garage into a granny flat is an excellent way to add value and functionality to your home. By considering the key questions outlined in this guide and consulting with us, you can ensure a smooth and successful renovation process. With the right planning, professional advice, and a clear vision, your garage can transform into a beautiful and practical living space.

Ready to get started on your Auckland garage conversion project?  Contact Idea Renovations today to bring your vision to life and make the most of your home renovation project!

Home Renovations ideal renovations