More space. More inspiration. More income.

Imagine creating extra space around your home, without the mess of a renovation. From family retreats to creative studio spaces or to simply bring your loved ones a little bit closer to home – the only limit is your imagination.

As more West Australians discover the benefits of ancillary dwellings, Fox has been building a reputation for high quality, technical innovation and unbeatable value for money since 2013.

Internal view of The GENOA which is a flexible 2-bedroom granny flat design comprising of two great sized bedrooms, a large living area and fully customisable kitchen.

Great things come in small packages.

As you can see, the term ‘granny flat’ can now mean almost any new self-contained expansion to your existing home. But that’s just the beginning. We’ve built our company to make sure that every stage of the process is there to give you the best experience in your new build.

This is your journey, and we’re here to make it as easy as possible for you.

Fox granny flats construction process manufactured locally in WA

Produced for you, with you.

Our granny flats are produced using a variety of building methods, from panel EPS or stud frame, to concrete floors and durable steel frame. We manufacture your buildings offsite in our custom factory, with over 40,000m2 of manufacturing space and using local WA supply chains to minimise delays. We can liaise with your builder directly for ease of construction, transportation and installation.

We’re ready to help you with all your granny flat needs.

Whether you’re looking for more space for the family, or needing to bring a loved one a little closer, we can manufacture your new granny flat in Perth from as little as $86k (panel) or $111k (steel frame)*.

Our Australian-made, prefab granny flats are constructed offsite in our factory and can be ready in a matter of months.

Curious about the installation process?

Watch how it’s done.

Why choose Fox Granny Flats?

Our granny flats can be relocated anywhere in WA, or removed and sold with no extra fuss.

See our relocatable granny flats here

We’ve developed efficient building processes and low labour costs to pass savings onto our customers. Check out the Arezzo for a cost-effective granny flat.

Our team manufactures in Perth, and can help arrange transport anywhere in WA. Our easy-load lifting system means we can load buildings for transport within the hour.

With Fox Granny Flats’ unique design methodology, you can customise our designs to your physical needs and specs with a minimum of fuss.

While project timelines can vary depending on approvals, you’ll be pleasantly surprised at the speed of our builds compared to traditional methods.

Ready to start?

Get in touch today!

Our Designs

View all designs

See our granny flats for yourself

Get in touch, and we’ll take you on a guided tour!


When deciding how much space you’ll need for a granny flat, this will largely depend on the size you’re looking to build and whether it’s a one, two or three-bedroom granny flat.

Ideally, we would recommend at least 20m2 for the granny flat itself and allowing for a minimum 1m space from any boundaries. Note that different shires have different regulations on what your maximum size for the granny flat can be!

Yes! We have a display village in Perth, where you’re welcome to visit and chat with one of our knowledgeable Fox sales and design consultants.

Why not contact us for more information?

Our granny flats are 100% built offsite, so there are no tradies at your property until the site works are carried out.

They are constructed in a shorter time frame than traditional homes, and because they are built in our factory, there are no delays with weather or other external factors.

Building a Fox Granny Flat gives you greater flexibility as they can be transported and installed practically anywhere, so if your circumstances change you can relocate it with ease.

Due to the customisable nature of our designs, our granny flats can vary in price. But with a starting price of around $86k (for panel), they are usually much more affordable than a traditional brick and tile build.

During the enquiry stage, we take the size, any inclusions or modifications to the design and location of transportation into consideration, when producing your quote, so there are no hidden surprises.

If you’d like more pricing information, please contact us, call (08) 6117 5719 or email

Want to learn more?

Reach out to our expert Fox Granny Flat team today.

Please note that our services are currently only available in Western Australia.