Granny Flat Builders Gold Coast

Building Granny Flats That Feel Like Home With 100% Satisfaction

Extending your home with a granny flat gives you so many options for additional living or work space, or even additional income. Allowing our granny flat builders on the Gold Coast to take the stress out of the process gives you a customised, luxury result, with a 100% satisfaction guaranteed. Backed by more than two decades in the area, we can handle every step of the process, including approvals and project management. Book a consultation today to start working on your dream granny flat.

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Home » Granny Flat Builds & Renovations

Extra Space With a Touch of Luxury

How to Build a Granny Flat That Fits Your Needs

There are so many uses for a granny flat. Make it your home office. Create a multi-generational household. Rent it out. List it as a holiday rental. Whatever you’re picturing for your space, our granny builders on the Gold Coast will make sure it has that luxury feel you’ve come to love in your own home.

Our 20+ years of experience as local builders has given us the knowledge of Gold Coast Council permits and approvals, as well as creating a network of reliable trades, to make it easy to build a granny flat. Bring your own plans or allow us to help you put your ideas on paper, and then allow us to bring that vision to life. Get started with a consultation.

Types of Second Dwellings Our Granny Flat Builders Can Bring to Life

Gone are the days that granny flats were just rectangle eyesores in the backyard. Our Gold Coast granny flat builders create spacious, beautiful second dwellings that fit with your existing property to keep it all cohesive.

Attached Granny Flats

If you’re wanting to extend your home with a granny flat, while still giving the occupant privacy, an attached second dwelling may be the way to go. Our builders can create fully self-contained granny flats that feel private with their own kitchen and bathroom, while still being attached to your physical home.

Granny Flat Garage Conversions

Converting a garage into a self-contained granny flat, complete with new bathroom and kitchenette, can give you more living space that still feels part of the home. It can give elderly family members a way to still maintain their independence, while having that confidence and connection by being only a door away.

Detached/Freestanding Granny Flats

A detached or freestanding second dwelling is what comes to mind when most people think of a granny flat. They’re completely separate from the house, and can even have a second entrance built, such as via a private side fence, making it ideal for family or as a holiday or private rental property.

Other Secondary Dwelling New Builds

Granny flats don’t just have to be for living in. They can be used for home offices, studio spaces or anything you may need more space for, while still having some privacy and separation from the main home. We can add patios, bathrooms, kitchens, car ports or even a second-storey addition to give you more space. Ask us how today.

TESTIMONIALS

Gold Coast’s Trusted Granny Flat Builders

    
 
 
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   Sup pros'S .01 AND KING POO # gg and vlog Campbell 
 
 
 
 Trustindex verifies that the original source of the review is Google. "Absolutely outstanding experience with Castle Construction Australia! From start to finish, Greg Rice and his team demonstrated exceptional professionalism, skill, and attention to detail. The team was incredibly knowledgeable, communicative, and dedicated to delivering top-notch results. Our project was completed on time and within budget, exceeding our expectations. I highly recommend this company to anyone seeking high-quality construction services. Five stars all the way!"
  
 
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   Andrew Campbell 
 
 
 
 Trustindex verifies that the original source of the review is Google. The team at Castle was exceptional to work with. Nothing was to hard, even when the wifey continually changed her mind. Highly recommend Greg and the team.
  
 
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   Khin Maw 
 
 
 
 Trustindex verifies that the original source of the review is Google. Thanks Greg , Sam and team for their professional workmanship.  Highly recommended.
  
 
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   Chandra Vimal 
 
 
 
 Trustindex verifies that the original source of the review is Google. Very honest and hard-working team. Appreciated the work they have done to my house. I am happy to recommend castle construction
  
 
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   Esther Wills 
 
 
 
 Trustindex verifies that the original source of the review is Google. 10/10 - With thanks to the team at Castle Construction. You recently completed our renovation and we could not be happier with the end result and the experience from start to finish. Greg, Sam and Nick we are thrilled with our ‘castle’.  Without any hesitation, we absolutely recommend Castle Construction. After much research you made our shortlist of potential builders for the job, and we feel lucky that we made the right decision and chose your business. For us, this was the renovation of a lifetime. Replacing the roof, safely removing all asbestos from our 1950’s beach shack, completely transforming the entrance, flooding the dark lounge room with light and height by raising the ceiling, making the master bedroom brand new and adding a beautiful and modern en-suite. The transformation is unbelievable.  Thank you for paying attention to my specific requests. You listened when I told you what was important to us and you came back with options and suggestions on how we could make better improvements. Nothing was ever too much trouble and you never balked at any of my questions. Your input was very much appreciated.  We are also very happy with all the subcontractors that worked on our house, they were all friendly and professional and did a great job. Greg and Sam thank you for being so prompt and professional in every instance. We know who to call for our next reno! To quote my husband, Greg and Sam are two blokes you can trust. If we could give you 10 stars we would.
  
 
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   Chaw Thwin 
 
 
 
 Trustindex verifies that the original source of the review is Google. Greg and his team of Castle construction have completed an excellent job on our house renovation. We cannot speak highly enough of Greg, continually achieving a high level of quality and demonstrating a high level of professionalism. Greg was easy to deal with and down to earth through the whole process. Communication throughout the renovation was excellent. He was extremely thorough, explaining every step and answering all our questions along the way. Greg was accommodating when hurdles came up and worked around them with ease. He also had awesome ideas and alternatives to our design which incredibly improved our house layout and design. The end result was better than we could imagine and we could not be happier. Even after the renovation, Greg offered us to help with any issues we might come across once we moved in. We are so glad to say that we did not have a single thing we need to fix after moving in for 3 months. We are enjoying every little detail and just can’t stop admiring his high quality of work everyday. We look forward to working with Greg again on the next stage of our exterior renovation and would highly recommend Greg and his team at Castle Construction.
  
 
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   J.A.S YT!!! 
 
 
 
 Trustindex verifies that the original source of the review is Google. I would highly recommend Greg and the team at Castle Constructions. Greg is genuine with great communication skills. Our renovation/extension was a sizeable & challenging endeavour, Greg managed this well. Castle improved our architects design by raising a massive beam into the ceiling void, eliminating a low & obtrusive bulkhead. Greg made handy suggestions along the way that were logical & cost efficient. Greg is a true local and has the ability to source high end materials at a better price. From start to completion Greg & the team at Castle were easy to work with. Quality work and an eye for detail, we couldn't be happier with our finished product. Our home has been transformed into a fantastic & unique living space. Would absolutely use again and recommend to others. Thank you Greg & the boys.
  
 
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   Bev Kennedy 
 
 
 
 Trustindex verifies that the original source of the review is Google. Castle quoted promptly, explained the job clearly and provided friendly quality service
  
 
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   Wayne 
 
 
 
 Trustindex verifies that the original source of the review is Google. I employed Castle Construction based on the positive reviews and the reasonable price quoted for the work.  From the outset at the initial quoting I was impressed with Greg's professionalism and attention to detail. The quote provided was comprehensive and set out each stage of the work. I had a mezzanine floor and office constructed in my house along with an additional door fitted in the hallway. Greg's team was punctual, professional and obviously took pride in their work. Throughout the process I was kept fully informed on progress. A couple of additions  I required after work commenced  presented no problems at all with a slight variation to the price.  Greg and his team always turned up on time and the whole process just seemed to be unobtrusive and completely under control. I am thrilled with the end product  and would without hesitation recommend Greg and his team to anybody planning any sort of renovation work.
  
 
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   Sue Read 
 
 
 
 Trustindex verifies that the original source of the review is Google. We asked Castle Construction to quote for a house extension and from the moment I started speaking with this company  I knew it was going to be a positive experience.  We asked 5 builders to quote, Greg was the only builder we wanted to use, he was on time, on price and full of can do enthusiasm – let’s just say the other builders weren’t like this. The team at Castle Construction were so professional, they were tidy, respectful of our home and considerate throughout the whole project as I work from home.  The advice they provided was invaluable, they saved us time and money and offered recommendations on what would look nice, how we could save money and really knew what they were talking about - the end result is awesome and we couldn’t be happier.  The whole experience has been easy, stress free and professional.  If you are looking to get any building works done – big or small we would recommend you contacting Greg and the team at Castle Construction today for a quote – we are not just satisfied with the building work that was provided we completely trust Greg and the team at Castle Construction – you can’t buy trust, it’s has to be earn't.  Great Job Guys, Thank you so much.

Get Started With a Free Consultation

What to Expect During Your Granny Flat Construction

When you build a granny flat with Castle Construction, you get a smooth, stress-free process with all the approvals and nitty gritty details taken care of for you. With our team behind your build or extension, you receive premium craftsmanship, luxury finish and an end result that ticks every box. Here’s how.

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All-Inclusive, Transparent Quotes

From the very start, our Gold Coast granny flat builders approach your project with complete transparency. It starts with an all-inclusive, transparent quote so you can budget accordingly for your new granny flat.

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100% Guaranteed & Insured Work

We’re so confident in our work that we back it up with our 100% satisfaction guarantee. You’ll receive high-quality work, with high-end finishes that are functional, look good and last, with on-site and off-site management to see the project through from start to finish.

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20+ Years of local Experience

Our owner, Greg, has been working on multi-million dollar projects his entire career. Spanning 30 years, this experience helps him guide our team to build granny flats that focus on quality, not quantity, so you get outstanding results.

Looking for a builder for a granny flat project with results that speak for themselves?

Look through some of our recent projects to see just how much attention to detail we put into every granny flat build.

Frequently Asked Questions About Building a Granny Flat on the Gold Coast

Do you need council approval for a granny flat on the Gold Coast?

Yes, you will need to acquire a mandatory building approval from a private building certifier for a second dwelling, also known as a granny flat, on the Gold Coast as the structure must meet the Building Code of Australia. Depending on the size and proximity to the main house, you may not need full development approval for a residential premises. An experienced granny flat builder on the Gold Coast can help confirm which approvals your granny flat build needs to go ahead.

How much does a granny flat cost in QLD?

The average granny flat in Queensland costs between $60,000 to $350,000+, depending on the size, layout and finishes. This includes potential costs for site preparation, approvals and council fees, the type of build, its complexity and any location-specific expenses. For example, a second storey addition or garage conversion to be used as a second dwelling would be differently priced than a freestanding granny flat.

Who is eligible for the granny flat grant in QLD?

The Queensland First Home Owner Grant currently covers building a detached dwelling built on a relative’s land, such as a granny flat, up to the value of $750,000 for eligible applicants. To be eligible, the applicant must not have previously received the grant in any state or territory of Australia, have previously owned a home and must move into the dwelling within 1 year of the completed transaction, and proceed to live there for 6 months. There are some other qualifying factors to consider. Visit the Queensland Revenue Office website for more information.

How many bedrooms can a granny flat have?

Most granny flats in Queensland have one or two bedrooms. This will typically fit within the 80 square meters requirements for standard second dwelling requirements through most Queensland councils. Larger granny flats can be built, however, a Development Application (DA) will need to be lodged to comply with the Building Code.

Do granny flats increase property value?

Many property valuers estimate a granny flat can increase a property’s value by at least 20% to 30%, particularly in markets with rental shortages. A high-end granny flat build can help make sure maximum value is achieved. Aside from the property value, many homeowners on the Gold Coast are building granny flats to accommodate family, lease privately or to make available as a holiday rental.