The Specialists in Custom Granny Flats

Re-think Granny Flats with our custom architecturally designed Granny Flats. Incorporate the design features and little touches that will make your flat unique. From stunning modern floor-to-ceiling windows to custom rendering to match your house, the Cubitt’s team can create a bespoke Granny Flat that fits your vision and your budget. Your vision is our priority. 

With trained consultants, experienced designers and trusted builders on hand, we’ll handle everything in-house for an easy one-stop custom Granny Flat solution.

Not sure what you’re after in a Granny Flat? We’re here to help! Let us talk you through your options and show you the world of possibilities available to you.


Custom-built Granny Flats with Cubitt’s

Since 1994 we’ve been helping Australians achieve financial security and enhance their lifestyles with premium-quality custom-built Granny Flats. With our dedicated design team, experienced council approval professionals and trusted local builders we provide a full, end-to-end Granny Flat building service. Let us make your unique Granny Flat a reality.

Save yourself time, money and energy by building with Cubitt’s. With free site inspections, upfront obligation-free quotes and in-house builders there’s no need to waste time chasing down quotes or waiting on tenders. Plus, all council approvals are taken care of by us, with our experienced local specialists able to help with all certifications and approvals. Sit back, relax and enjoy the journey with Cubitt’s.


28+ years in business


Local builders


Turnkey flats


Full-service company


All council and DA approvals


Upfront quotes


FREE site inspection and feasibility study


No hidden fees

View our latest architecturally designed Granny Flats

Our clients came to us with a particular idea in mind – a spacious studio flat that doubled as a pool house. Our design team got straight to work creating a custom studio Granny Flat with a kitchenette for entertaining, a single bedroom and storage area, a bathroom and living area paired with a spacious timber deck overlooking the pool.

At Cubitt’s, we’re proud to offer stunning custom Granny Flats at no extra cost. We can customise one of our beautiful modern Granny Flats to meet your specifications free of charge.


We love the house we brought our babies home to, now we love it more because we have space for them as teenagers!

- Kim, Spring Hill NSW


Custom Granny Flats for every purpose

A Granny Flat is a sound investment at any stage of life. Whether your Granny Flat is an investment, flexible accommodation or future rental property, we’ll help you achieve your goals with a custom-built Granny Flat that’s made to fit your lifestyle. Our versatile Granny Flats can be tailored to suit almost any use. Get inspired and book your consultation today.

Artist Studio

Create your own dedicated, unique space for painting, building and creating. A self-contained studio Granny Flat is a great choice for a creative space, providing all the room you need for your creative endeavours. With custom features like a deep sink for washing brushes and other art supplies, a dark room for photography or in-floor drainage for easy cleaning, we can create the ultimate artistic space for your studio.


Pool house

Provide a comfortable place for guests to relax, eat, drink and bathe when using your pool. We can add a custom spacious covered deck, outdoor kitchen for entertaining and handy shower facilities to make your pool going guests feel right at home. Plus we can use tile, laminate or wooden flooring inside your flat suitable for wet-footed visitors.



Provide yourself with an extra revenue stream with a purpose-built Airbnb Granny Flat. We can incorporate desirable features that will make your property more enticing to potential holidaymakers and people on business such as floor to ceiling windows, strong wifi, spacious lounge areas and study nooks.


Guest quarters

Whether you have interstate or international family members visiting regularly or want to have a self-contained area for your friends to stay in, a custom Granny Flat is a smart solution. Provide a comfortable, private environment with a kitchen, bathroom and living area for long-stay guests to give both them and you some privacy. 


Grey nomad home base

If you’re looking to retire soon and want to have an inexpensive yet comfortable home base to return to, a custom Granny Flat is a fantastic choice. Invest more of your money into funding your retirement lifestyle by adding a Granny Flat to your child’s property.


Stepping stone home

Get a foot on the property ladder by investing in a Granny Flat on your parent’s property. Stay close to the comforts of home while funnelling your hard-earned money into an investment rather than losing it to rent, all while staying in a brand new, clean, comfortable space that’s all your own.


Visit Our Display Centres

Cubitt's Display Centre
and Head Office

152 Russell Street,
Emu Plains NSW 2750

Opening Hours:
Monday - Saturday 9am-5pm

Cubitt's Display Centre

124-126 Maitland Road,
Mayfield NSW 2304

Opening Hours:
Tuesday - Saturday: 9am-4pm

Cubitt's Display Centre

80-82 Kembla Street,
Fyshwick ACT 2609

Opening Hours:
Tuesday - Saturday: 9am-4pm

Cubitt's Display Centre

244 Shellharbour Road,
Barrack Heights NSW 2528

Opening Hours:
Tuesday - Saturday 9am-4pm


Frequently Asked Questions


Our versatile Granny Flats are your stepping stone to freedom

Whether you want to create a secluded space for your teenagers to relax in, want to create an additional revenue stream or simply want to improve the value of your property, we can design and build a custom Granny Flat that ticks all the boxes.

Your vision is our priority and we’ll work with you to get a thorough understanding of your Granny Flat specifications. From colours and finishes to overall feel and design our consultants will gain a deep understanding of your Granny Flat vision to help bring your dream flat to life.

Talk to us today about your very own custom architectural Granny Flat design

If you’re looking for a unique Granny Flat that will enhance your lifestyle and add value to your home, we're here to help. We’ve spent over 28 years building custom-made Granny Flats throughout NSW and the ACT and we’re the experts in fast, smooth and versatile Granny Flat construction. With an easy eight step design and construction process and all approvals, certifications, design and construction handled in-house, when you work with Cubitt’s, you're working with the best.

Book a consultation today to get started or visit one of our showrooms for inspiration.


Enquire today about building your own Custom Granny Flat

Interested in finding out how to make a positive investment from a Cubitt's Custom Granny Flat? Get in touch for a no-obligation site inspection today.

2023 Custom Granny Flat Design Form



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