Granny Flats Builder

classic home with timber cladding
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Granny flats have come a long way from simply housing grannies. Now available as multiple-bedroom or two-storey granny flats, these designs are small units either attached or separated from a single main dwelling on the same block of land. Granny flats feature the same quality construction that you should expect in an average-sized home and can be as packed out with features or as minimal as required to suit your unique needs.

Granny flats offer the perfect solution for a range of situations, from housing elderly or disabled family members to providing a teenage retreat, home office solution or pool house. Granny flats are becoming increasingly common as the housing market heats up, making independence more affordable for many demographics.

A granny flat is self-contained and can host extensive features, including a full-sized kitchen, bathrooms and multiple levels. Stylish granny flats are popping up in the backyards and homeowners' properties across Australia.

With the granny flat specialists at A-Class Building and Construction, your dream granny flat is more achievable than you may think.

The Benefits of Granny Flats

Granny flat development has come leaps and bounds over the years, and there are now many more benefits to living in a granny flat than providing a simple roof over the head of a loved one.

Building a granny flat has many obvious benefits, and some that you may not have considered, including:

Complete Customisation

Granny flat designs can include many unique features and inclusions to ensure clever use of every square inch of space. World-class, modern amenities, along with smart style and design, bring a modern difference to granny flats, making them the perfect home extensions.

We are proud to offer full customisation of our granny flats to ensure that your project is completed perfectly.

Make the most of your backyard

With a granny flat, suddenly the empty space that you need to weed and mow every week has a purpose that will not only bring lifestyle benefits but financial ones. Whether your home is an investment property or you're simply looking for extra room, a granny flat can bring financial value and other benefits to an otherwise useless space.

The option to build small and tall with a granny flat means that your yard can still be used for gardening and parties, serving two benefits.


For those looking to reduce their carbon footprint, building a granny flat is a wonderful solution thanks to its smaller size and a reduction of overall energy consumption. Building from scratch enables you to make eco-conscious decisions for appliances and inclusions, lowering cost and output overall.

Build your dream home for less

For those looking to reduce their carbon footprint, building a granny flat is a wonderful solution thanks to its smaller size and a reduction of overall energy consumption. Building from scratch enables you to make eco-conscious decisions for appliances and inclusions, lowering cost and output overall.

Why Work With an A Class Granny Flat Builder

We have been building for over 45 years of combined experience within the Wollongong region with a passion for creating the highest quality results for each and every client. We provide accurate estimates and guarantee quality workmanship, delivered right on time.

Some of the perks you can expect when choosing A-Class builders in Wollongong for your granny flat include:

  • We involve our client throughout the whole process, from design to construction;
  • We can offer knowledge and advice on the design and construction of your granny flat to meet all relevant standards;
  • We have an excellent track record of happy and satisfied clients who are the proud owners of a new home or granny flat and
  • We offer a wide variety of designs
brick home with a big balcony
06 year warranty
Lifelong member of the a class family
access to our schedules

At A Class Building & Construction, we don’t believe in a one-size-fits-all solution, especially when it comes to building granny flats. We understand that every family is different and so are the needs of your granny flat. Your site, budgets, preferences and individual requirements will be different from other clients - this is why our aim is to deliver customised building services that will meet your needs.

Elegant bedroom

Why Work With an A Class Granny Flat Builder

Whether you're simply looking for extra space for your family or creating a home office project, it can be helpful to know the details before undertaking your granny flat build. 

Our Granny Flat Design Process

  1. Design and approval process

From our initial meeting, we will create your dream granny flat design depending on what you want to accomplish, what we can build in your space, and how much you can spend on your budget. We will submit a development application and relevant paperwork from here to get all approvals ASAP. Once we receive relevant approvals, we will schedule the build process and order your chosen materials, securing everything we need to avoid hiccups along the way.

  1. Prepare the property

We will prepare the site for the build by clearing any debris and obstacles while ensuring there's enough space for our materials and tools to not impact your day-to-day life. Your neighbours will need to be informed that our team will be working on your site as per council regulations.

  1. Slab and foundations

This is the stage where you can start seeing your granny flat come to life with the slab and framework showing you exactly where your granny flat will stand. You can now start imagining how you will make the most of your remaining yard and the space around your granny flat.

  1. Frame

We use the strongest timber or steel to set out your internal and external bearings. With the approval of your site supervisor or project manager, you may be able to walk around your new granny flat and see exactly where each bedroom and window will be. From here, you can make furnishing and decoration decisions based on details such as the best sunlight and airflow in your new granny flat.

  1. Lock up

The lock-up phase involves completely closing the granny flat, including the doors, windows, roof, and guttering. From here, we can lay the external brickwork or colorbond, and you can step back and marvel at the stunning facade of your new granny flat.

  1. Interior details

As everything is now lockable and weatherproof, we will work on the interior fixtures such as your electrics, plumbing, insulation and plasterboard. From here we can begin your kitchen install including cabinets, appliances and your oven.

  1. Flooring and style

This is where your granny flat starts to look like a real home, matching the interior with your main home style and exterior features, or having it stand out as its very own style. We will install the final tiling, shower screens, paint and accessories including both creature comforts and essentials.

  1. Handover

And just like that, it's time to receive your keys and enjoy your new granny flat. We will do one last inspection to ensure everything is exceeding code and functioning perfectly while making sure the quality workmanship we are known for is intact. After a good clean and check, your granny flat is all yours to enjoy.

Build Your Dream Granny Flat Today With Our Granny Flat Specialists

house with timber cladding

Show your loved ones how much you care for them and increase the value of your property by considering a granny flat built on your property. We have an extensive range of multiple-bedroom granny flats, single-bedroom granny flats or simple studios to inspire you, and with our experienced team - you can select the best for your property, budget and needs.

A Class Building & Construction can help you to design and create an affordable housing solution.

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Frequently Asked Questions

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Can I build a granny flat on my property NSW?
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The A Class Family Guarantee

In the unlikely event anything is ever wrong, we guarantee to be there.

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We have built across the Wollongong region for over 15 years.

“A Class team are great at what they do. Scott and Rob go above and beyond on all their jobs while delivering amazing work. Would Highly recommend them for any construction work. Great service, knowledgeability, skill, attention to detail and value.”

Myles Lanyon
Our Awards
MBA regional awards logo

List of awards we've achieved in the last few years from Master Builders Association of NSW and Regional Excellence in Building Awards.

  • 2022 Winner - Bathroom Projects Over $30,000
  • 2022 Winner - House Additions, Alterations & Renovations $600,000 to $800,000
  • 2022 Winner - Energy Efficiency & Environmental Sustainability
  • 2019 Winner - Best Stair Case
  • 2019 Winner - Best Granny Flat
  • 2018 Winner - Best Alteration & Addition $900,000 to $1,000,000
  • 2018 Winner - Best Kitchen Over $100,000

Book A Building Consultation

Booking a building consultation is the perfect way to meet our team and get answers about building your dream home. At your consult, our friendly and experienced builders can advise you on everything from planning and design to cost and budgets and can use this time to begin developing a detailed quote and plan of attack that meets your needs.

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