There's never been a better time to build a Granny Flat

Ask us today about our no hidden fees guarantee and book a FREE No Obligation Consultation

With prices starting at just $82,945, it's the perfect time to build your Granny Flat

There are many reasons building a Granny Flat is a great idea. And whether it's to accomodate a growing family, or to improve the value of your current property, now is the perfect time to speak to a Cubitt's consultant.

What makes us different?

We're a family run business who take great pride in delivering not only an exceptional Granny Flat, but an exceptional build experience. That's why we provide you with one point of contact from start to finish - a qualified, knowledgeable project manager dedicated to you and able to answer any questions you may have throughout the process.

And unlike other Granny Flat Builders we take the time to qualify your build through Council before we ask for deposits. Our Free No obligation quotes are designed to review your requirements and compare against Council regulations to ensure building is possible, and we work with Council to get your approvals making the process as simple as possible.

At Cubitt's our guarantee of excellence includes;

  1. No hidden fees
  2. No post contract charges
  3. $0 design costs
  4. All Council approvals handled by Cubitts
  5. 10-12 week build time (weather dependent)
  6. Access to our Smart Homes package

We've helped thousands of clients build a stronger future

40Sqm Bottlebrush 2 Bedroom

The whole process was great, the contractors were fast, professional and very considerate of our family life. Very fast build and great service. Thank you

- Michelle, Koonawarra NSW. 2 Bedroom, Bottlebrush Granny Flat

Banksia 2Bedroom With Skillion Roofline 50 Sqm

Early completion ahead of the contracted date saw us have the house tenanted quickly. Took a load of stress away and the finish is fantastic.

- Tony – Charmhaven 2 Bedroom , Banksia Granny Flat 53m2

30 Sqm Bottlebrush 1 Bedroom

All of the staff, through administration, planning and building to completion, at Cubitt's have been most helpful and responsive in moving forward on the construction of a great little granny flat that gives great and appropriate extension to our Federation Cottage.

- David – Goulburn . 1 Bedroom ,Bottlebrush Granny Flat 40m2

63Sqm Banksia 2 Bedroom Option 1 Render

We chose Ian Cubitt’s to build a granny flat, with suitable modifications to meet the needs of our medical issues. Our granny flat has ramps, wide doorways, plenty of room to manoeuvre a wheelchair, sliding doors and a specially adapted bathroom. We could not be more delighted with the finished home. From pre-planning to completion we have been kept informed of progress. The site was always tidy, the tradespeople professional and polite, as were the supervising staff. The neighbours were very impressed with the low noise levels and lack of disruption to them.

- Bill – Mount Druitt . 2 Bedroom ,Banksia Granny Flat customised for accessibility

53Sqm Telopea 2 Bedroom Render

We chose Cubitt’s as they had 3 flats of different designs in their showroom, which we could inspect. They organized Council approval for us as our granny flat had to be built close to our neighbour’s fences. Work was performed very efficiently. We even had some work done on a few Saturdays. The work was completed on time. We have no hesitation in recommending Cubitt’s.

- Eugene - Castle Hill. 2 bedroom, Telopea Granny Flat 61m2

2Bedroom Banksia53sqm Brick

The granny flat is nearing completion nearly a month ahead of schedule, with little to no problems, with all carpenters and trades being respectful and professional with their level of work being flawless.

- Robert – Tregear. 2 Bedroom, Banksia Granny Flat 53m2

Which Granny Flats Suits You?

With a rich variety of base models and sizes, we have the design to suit everyone's needs. View the range below, or contact a Cubitt's Consultant to organise a free, no obligation consultation. 

Want to chat? Why not give us a call on 1300 721 150


1Bedroom Grannyflat

1 Bedroom Granny Flats

Our One-Bedroom Granny Flat or garden studio makes every square metre count.

One Bedroom base models are available in 47m 2 and 53m2 – or you can customise with our expert design team.

It’s an ideal solution for a home office, artist’s studio or occasional entertainer for family and friends.

One Bedroom Custom Bottlebrush Granny Flat shown

Telopea 2 Bedroom With Skillion Roof Line 60 Sqm Plus Porch With Downlights And Fans

2 Bedroom Granny Flats

Our Best seller.

2 Bedroom Granny Flats are designed to fit perfectly on standard blocks and are available in an array of base models ranging from 40m2, through 53m, 63m and 71m2 with beautiful alfresco areas added.

Or, as ever at Cubitt’s you can customise!

Two-bedroom Granny Flats are endlessly popular due to their versatility and incredible opportunity for comfortable compact living.

Two Bedroom Telopea Granny Flat with alfresco shown

Bottlebrush3bedroom 60Sqm Porch Weathertex Cladding (1)

3 Bedroom Granny Flats

Surprise yourself with the compact luxury of a 3 Bedroom Granny Flat.

3 Bedroom Granny Flats are an excellent option for keeping the family together longer or making a clever investment out of your unused backyard space.

At sizes of 52m2, 60m2 or even 90m2 in the ACT, your 3-Bedroom Granny Flat can be made even more luxurious with additional decking, alfresco areas, interior design features and other options.

Bottlebrush, 3 Bedroom 60m2 Granny Flat base model shown

2 Bedroom Telopea Wheelchair Accessible Granny Flat 650X375

Looking for something different? That's our specialty.

Sloping yards, accessibility needs, or looking for something a little different to make your Granny Flat stand out? These are what Cubitt's is known for. 

Our $zero design fee means a custom build design can be from a simple tweak to something that really makes you stand out. And the design fees are free of charge.

Cubitts Advantage White

Your Dream Granny Flat Is Closer Than You Think

Enquire about a new Granny Flat designed and built by Cubitt's

Enquire about a new Granny Flat designed and built by Cubitt's. Feel Secure, Comforted By The Cubitt's Advantage. Our experienced team of consultants take the time to not only review any specific needs such as DAs through council at no charge. We also don't ask for upfront fees. Ask your Cubitt's Team Member today, what sets us apart from our competitors.

Or Give Us a Call On 1300 721 150


Please view our Privacy Policy

Visit us at one of our convenient locations

Cubitt's Emu Plains

View On Map

Cubitt's Main Sydney Exhibition Centre & Head Office

152 Russell Street, Emu Plains NSW 2750

Opening Hours

Monday-Saturday 9am-5pm

Sunday 10am-4pm

Showrooms Available

Telopea 53m2

Banksia 63m2 Option 1

Bottlebrush 60m2 Extended

Cubitt's Wollongong

View On Map

Cubitt's Wollongong Exhibition Centre

244 Shellharbour Rd, Barrack Heights 2528

Opening Hours

Monday- Saturday 9am-5pm

Showrooms Available

Banksia 63m2 2 Bedroom Banksia Option 1

Bottlebrush 71m2 2 Bedroom Granny Flat

Cubitt's Canberra

View On Map

Cubitt's Canberra Showroom

80-82 Kembla Street, Fyshwick ACT 2609

Opening Hours

Thursday, Friday, Saturday 9am-5pm

Showrooms Available

Bottlebrush 80m2 2 Bedroom Granny Flat

Telopea 70m2 2 Bedroom Granny Flat

Cubitt's Newcastle

View On Map

Cubitt's Newcastle Showroom

124-126 Maitland Road Mayfield NSW 2304

Opening Hours

Monday-Saturday 9am-5pm

Showrooms Available

61m2 Telopea 2 bedroom granny flat

63m2 Banksia 2 bedroom granny flat

Frequently asked question about granny-flats

I thought Granny Flats had to be a maximum of 60m2. Why does Cubitt’s have bigger models?

The 60m2 requirement applies only to the interior space of your Granny Flat. Additional areas such as decks, alfresco areas and garages are not included in this area requirement.

To find out more, talk to one of our experienced design consultants today

Are you guys the most expensive Granny Flat builders?

No, we are not the most expensive, not by a long shot.

Cubitt’s have been building Granny Flats and home extensions in Australia for over 25 years. Our longevity and extensive knowledge of the industry allows us to deliver projects from world-class suppliers at affordable, value for money prices. Our experienced sales and design consultants will keep your budget in mind when considering any options for you.

Cubitt’s experience and passion for what we do means our projects are delivered on time and within budget, with no hidden fees or post-contract changes.

Plus, included in our cost is our unbeatable customer service. Our experienced and friendly staff are always available, from our design team right through to office staff, your site supervisor and construction team. Our motto is one contact, zero confusion!

Will I need survey reports before building can start?

Survey reports (such as bushfire, flood etc) ensure your safety and your warranty, so they are worth doing and doing well.

The team at Cubitt’s are completely transparent with you from the start about any report(s) that you will need, and the costs involved. In this way, you are aware of everything up front. Our team helps our customers understand the reasons and can support the process to get moving on your build.

What exacatly are the standard inclusions in your base models?

Our standard inclusions are:

  • Electric oven and electric or gas cooktop with range hood
  • High-performance insulation and termite treatment
  • White roller-blind window coverings
  • Colorbond fencing and gate
  • Sliding, mirrored wardrobe doors in all bedrooms
  • TV and phone outlets
  • Bathroom exhaust-fan
  • Plumbing and electrical connections
  • 5-star energy saving Hot Water System
  • Rainwater tank and recycled water system for toilet and washing machine.

+ much more!

View a detailed list of all inclusions here

What is a feasibility study?

A feasibility study is the first action the team at Cubitt’s will take to give you the complete assurance that your property is appropriate for building a Granny Flat. A feasibility study and all of your pre-contract work is conducted completely free of charge when you come on board with Cubitt’s (with the exception of fees applicable to councils for surveys and certificates).

We recommend that you be cautious of anyone asking you for a deposit or fees for a feasibility study.

Is the council approvals process a nightmare?

At Cubitt’s, our experienced council planning and drafting teams understand the complexities of building with councils throughout NSW and the ACT, and will take care of all the council dealings for you – it’s all included as part of our service.

Sometimes council approvals can take longer than anticipated, but we always keep you informed and supported every step of the way. Councils are increasingly becoming more aware of how crucial Granny Flats are to affordable living in NSW and the ACT, with some parts of Sydney seeing approvals doubling within the last two years alone. Some councils are approving applications in as little as ten days!

Does every builder offer a ‘complete’ or ‘turn-key’ service like Cubitt’s?

The short answer is no, this is not offered by every builder. Review your choices carefully and be really selective about who you choose to work with. We recommend that you sign up with a builder rather than a company who will draw up your plans and just leave it to an assortment of subcontractors to figure out the construction. All too often we come across people desperately looking for urgent help with unfinished jobs!

One of the advantages of building with Cubitt’s is that we are true builders ourselves – from our Founder Ian Cubitt himself right through to our construction team of over 100 experienced builders.

We give our customers the reassurance that when you indeed turn the key to your brand-new front door, your build will be complete, warranted, certified and completed with care and precision.

We recommend you take care to confirm what ‘Complete Service’ claims actually include when searching for a business to build your Granny Flat. Complete service should include designing, quoting, all council approvals, construction, fabrication and logistics plus after sales support and quality control.

Can you tell me over the phone whether you can build a Granny Flat on my block?

Technically yes, and some Granny Flat builders will take your money without even visiting your property and proposed building site. But is that something you feel comfortable with?

The Cubitt’s team of experts will come to your site completely free of charge, to review whether there are any reasons why a Granny Flat wouldn’t work. During our visit, we can provide you with recommendations about how one of our Granny Flat models could be best placed on your land, and whether you would like to look at a base model or a customised model.

It’s all part of the Cubitt’s Advantage. Our staff are perfectly skilled, constantly committed and proudly respectful.

In your inclusions you mention Home Owners Warranty Insurance. What is that?

In NSW, any building work over the amount of $20,000 requires Home Owners Warranty insurance. The insurance covers up to the amount of $340,000. The period of cover is six years after completion of work.

In the ACT, any building work over the amount of $12,000 requires Home Owners Warranty insurance. The insurance covers up to the amount of $85,000. The period of cover is six years after completion of work.

Is a Granny Flat really a good investment?

You may be excited to hear that the return on investment for a Granny Flat you build on the property you live in, or on an investment property, is likely to bring you a higher return faster than investing in any other residential real estate in NSW or the ACT.

Keen to know more? We’ll let the figures speak for themselves:

Tanya - Blackett, NSW

Valuation with 1 house - $285,000

Granny Flat Cost - $124,740

Valuation after 6 months - $525,000

Increased Value - $240,000

Total Rental Value (House + Granny Flat) - $630 per week

Noel - Mt Pritchard, NSW

Valuation with 1 house - $540,000

Granny Flat Cost - $101,909

Valuation after 6 months - $730,000

Increased Value - $190,000

Total Rental Value (House + Granny Flat) - $820 per week

Sam - Marayong, NSW

Valuation with 1 house - $390,000

Granny Flat Cost - $95,298

Valuation after 6 months - $650,000

Increased Value - $260,000

Total Rental Value (House + Granny Flat) - $700 per week

I feel like building a Granny Flat is not like building a real house, is it flimsy?

No, that couldn’t be further from the truth. See for yourself by arranging a visit at one of our showrooms. The feedback we hear most, year after year, is that customers cannot believe the sturdiness and strong value of the Granny Flats built by Cubitt’s.

A Granny Flat built by Cubitt’s is not like a demountable, a kit home or a modular home. We are passionate about delivering Australians their dream Granny Flat, therefore we build onsite using only the best carpenters, concreters, plumbers, electricians, tilers and more. Over 25 years, we have built a team with some of the best and most reliable tradesmen in the industry, and have become the trusted name in delivering Granny Flats and Home Extensions for customers across NSW and the ACT. You’ll find no untested tradesmen in our team!

Surprise yourself by witnessing the size, structural robustness and top-quality inclusions of a Cubitt’s Granny Flat, you may even be surprised by the affordable price tag too!

Are Cubitt's Granny Flats like kit homes?

No, our Granny Flats are not like kit homes. While our Granny Flats are on average the same price as a kit home or modular home, they are not pre-fabricated.

All of the Granny Flat and home extension builds completed by Cubitt’s are done on your specific site, to your specific plans. We are committed to building your dream Granny Flat, and we understand that there should be nothing prefabricated and no shortcuts taken. This is a home we are building specific to your individual needs and tastes.