Cubitt's Newcastle Granny Flat Showroom

Newcastle’s most trusted Granny Flat builders

At Cubitt’s, we’re proud to have been serving the Newcastle region for over 25 years. In that time the demand for Granny Flats has soared, with Novocastrians requesting ever more sleek, modern and smart Granny Flat designs. We’ve risen to the challenge to create a range of contemporary, spacious and versatile Granny Flats ideal for everyone from Airbnb hosts to investors and those who want to keep family close. 

Whether you choose one of our sought-after modern Granny Flat designs or opt for a Custom Granny Flat designed by our in-house team, when you work with Cubitt’s you’re working with the best. As full-service Newcastle Granny Flat builders, we’ll handle everything from Council permissions to feasibility, design and installation, all from our local Newcastle office, providing a streamlined, stress-free experience.


2 Beds
1 Bath
60 m2
2 Beds
1 Bath
90 m2
2 Beds
1 Bath
60 m2
2 Beds
1 Bath
72 m2
1 Bed
1 Bath
52 m2
1 Bed
1 Bath
56 m2
3 Beds
1 Bath
60 m2
3 Beds
2 Baths
90 m2

Secure your family’s future with Cubitt’s

A Granny Flat can add enormous value to your home and your lifestyle, providing flexibility, additional income and increased valuation to your property. Whether you want more room to grow or are looking for a simple way to increase your property’s worth, a Newcastle Granny Flat with Cubitt’s is the way to go.

Our floorplans are tailored to your needs and your Granny Flat will be finished with contemporary furnishings, appliances and colours to suit your taste. We’ll work closely with you and take the time to truly understand what you need from your Granny Flat to come up with a design that ticks all the boxes.

We’ve spent decades perfecting our Granny Flat installation process ensuring a seamless, stress-free and cost-effective solution for every client, and we’ll keep you up-to-date at every step.

Your vision is our vision and we take pride in bringing your ideal Granny Flat in Newcastle to life.

Maximise your backyard’s potential and call 1300 721 150 to discover the benefits of partnering with the most trusted Granny Flat builder in Newcastle.


Where we build in Newcastle

Granny Flats in Newcastle have become an incredibly popular investment choice and we’ve expanded our operations to cover the entire Newcastle, Lake Macquarie and Hunter regions – and beyond!

Made from only the highest quality materials, our practical yet beautiful Granny Flats provide comfortable modern living suited to the Newcastle climate. With alfresco living spaces, custom finishes and even swimming pools available as part of our tailored Granny Flat service, you can create an oasis that lets you make the most of your Newcastle property all year round.

We’re proud of our reputation as the most trusted Granny Flat builders Newcastle has to offer. The Cubitt’s team is passionate about our work, and we go out of our way to ensure our clients are 100% satisfied with the Granny Flat we develop for them.


Trusted in-house designers and builders


All DA and council approvals


28+ years of experience


Full-service home extensions


Dedicated design consultants


Proudly Australian, owned and operated

Why invest in a Granny Flat in Newcastle?


Financial security
Building a Granny Flat is one of the smartest financial moves you can make, whether you want to add value to your home or bring an additional revenue stream into your property through rent. In fact, Granny Flats have been known to add hundreds of thousands in value to Newcastle homes.


Help your kids enter the property market
As an alternative to giving or lending cash, why not keep your children close in a Granny Flat? Give them a foothold in the tough Newcastle real estate market with a modern Granny Flat that has everything they need in a first home at a price they can afford.


Keep grandparents close
If your parents need to downsize and want to keep their independence, a Granny Flat is the perfect solution. Keep them close by in a customised Granny Flat that allows them to stay self-reliant. Our designs can be modified to include wheelchair ramps and other accessible features.


Share the wonders of your local area with visitors by setting up an Airbnb in your backyard. With one-, two- and three-bedroom designs available you can accommodate everyone from business people to tourists exploring the Newcastle region.


Room to grow
Many Newcastle families are adding Granny Flats to their homes as a smarter way to be a family. Your new Granny Flat can be anything you need it to be as your family grows, from a teenager’s retreat to secure housing for elderly relatives.


Make it your own
Granny Flats aren’t just for grannies. Your new flat could be a teenager’s retreat, a parent’s oasis, a long-term rental or guest accommodation for visiting friends and family. The possibilities are endless!


Your one-stop service Granny Flat builders in Newcastle

At Cubitt’s we pride ourselves on our easy, smooth and stress-free approach to Granny Flat building. Newcastle locals need someone they can trust to provide a fast, effective and thorough end-to-end Granny Flat service – and that’s exactly what we do. From free feasibility studies and up-front pricing to custom designs prepared by our in-house team, we’re 100% honest and transparent at every stage of production, ensuring you always know exactly where you stand. One-stop, one-touch, easy Granny Flat construction.


As an Australian family-owned and operated business, we’re proud of the growth we’ve achieved through genuine quality, exceptional service and beautiful, long-lasting results. If you’d like to add value to your Newcastle home with a contemporary Granny Flat, get in touch today. We’d love to chat! 


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



Frequently Asked Questions


No Obligation Free Site Assessment

Interested in finding out how to make a positive investment from a Cubitt's Granny Flat or Home Extension? We offer a full feasibility study and free Granny Flat quote for your site. With just 45 mins of our time onsite we can give you an accurate picture of complete costs for your build - get the assured green light!

Or call:

2023 Free In-Home Consultation Form

First Name(Required)


Visit Our Newcastle
Display Centre


Cubitt's Display Centre

124-126 Maitland Road,
Mayfield NSW 2304

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

Where We Build


Cubitt's Granny Flats Available to
View at our Newcastle Location



The Tomaree is most like our 2024 model, The Avondale which is upgraded to meet National Construction Code requirements. The Byron features an inspiring upgraded kitchen and bathroom option. Read the blog.


2 Bedroom   |   60m2  | Granny Flat


Banksia II

The Banksia is most like our 2024 model, The Byron which is upgraded to meet National Construction Code requirements. The Banksia features a bathroom plus a separate laundry with toilet. Read the blog.



2 Bedroom   |   60m2 | Granny Flat


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