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HUGE $10,000 Promotion package with amazing inclusions and upgrades!

Leading Granny Flat Builders Sydney

Our process has been perfected with over 30 years of industry experience allowing us to offer our clients more than just their dream granny flat. We take pride in each and every project we undertake, this is our passion and it shows.

Penrith Panthers

The boys did it!!! Let's celebrate with $5000 off your construction price!

Your job must be within the Penrith LGA and you must sign up before 31st of October 2021.
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MBA Certified and accredited
Over 30 years experience
we give Expert Investment Advice
10 WEEK Granny Flat Build Time
Competitive Pricing

Setting the industry standard for affordable and quality built granny flats!!

Our process has been perfected with over 30 years of industry experience allowing us to offer our clients more than just their dream granny flat. We take pride in each and every project we undertake, this is our passion and it shows.

No Hidden Fees, No fine print!

Just quality built Granny Flats backed by 30 years experience and a passion driven team dedicated to bringing your dream to life! 

Granny flats are the latest trend in the residential construction space in Australia. These secondary structures can be built in any area of your yard and become the perfect residence for elderly family members that need an extra room and separate living space.

We at A1 Granny Flats are a renowned Granny Flats Builder with over 30 years of industry experience. This experience puts us in a unique position to offer superior quality construction, custom layouts, plans and timely project completion.

Professional and Reputable Granny Flat Builder in Sydney

What distinguishes us from many other Granny Flats Sydney builders is our passion for our work, which is evident from the moment you contact us with your query or requirement. We are honest in our approach and maintain transparency in all our business dealings.

When you work with us, you never have to worry about any hidden fees or fine print. With us, what you see is what you get, and it gives you peace of mind when you are building your granny flat in Sydney. Our team of experts has worked on a significant number of granny flats projects over the years, and no project is too big or small.

We can help if you want a simple and straightforward one-bedroom granny flat design or a more elaborate multi-bedroom structure. We understand that many clients may wish to use their granny flats for various purposes, such as a home office, studio, rent, and more.

It's why we highly recommend and focus on customisation and personalisation in every project we handle. We are the reputable granny flat builder in Sydney that works with one aim in mind – to ensure that you get your high quality dream granny flat within your budget.

Unique Designs for Granny Flats Sydney

The construction space is continuously evolving, and we always keep up with these trends while building a granny flat. Today, there are many amenities, fixtures and fittings that can be included in granny flats in Sydney, to enhance their safety, practicality and functionality. While working on time-tested and proven granny flat construction principles, we always use the latest technology and hassle-free construction techniques in our projects.

We also incorporate various modern safety and smart technology features as required by our clients. As a result, what you get is a comfortable, safe, durable, and aesthetically appealing granny flat that offers excellent functionality, while increasing the value of your home.


With our unique construction methods, designer range and priceless attention to detail, we have fast become Australia’s most reputable and award winning granny flat construction company with hundreds of satisfied customers across NSW. We have one of the largest custom selections and standard inclusions available in the industry.

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Unbeatable Quality at affordable prices

Our Granny Flats are custom designed to suit your property. Here at A1 Granny Flats, we pride ourselves for staying in touch with changing trends in modern style living, delivering to our clients across NSW a product above all standards and an experience to truly enjoy.

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Custom Granny Flat Design and Plans

In the current real estate landscape, multigenerational housing options are becoming increasingly popular. While property owners look for the maximum value, they also want granny flats in Sydney outfitted with all modern amenities. In addition to all standard features, we can include amenities such as:

  • Full-scale kitchen and pantry facilities
  • Custom designed living room spaces
  • Ensuite constructions
  • Raked ceilings
  • Baths with custom fixtures, bathtubs etc

The customisation possibilities are truly endless when it comes to designs for Granny Flats in Sydney. No matter what your specific needs, you can rest assured that our expert design team will create a granny flat in line with your needs. The structure will be up to code; it will perfectly complement the architectural styling of your home and blend in with the other features on your property.

Our Services

While we are the granny flat construction experts, we do far more than that. The range of services we offer include:

  • Complete Custom Design- We custom design granny flats from the ground up to suit all types of blocks or budgets.
  • Granny Flat Conversions- We can convert existing structures on your property into a granny flat.
  • Second Storey Additions- Add another storey to your existing home.
  • Knock Down Re-Builds – Raze an existing structure and rebuild.
  • Decks & Pergolas – Bring your yard space to life and increase its usability by adding outdoor structures like decks and pergolas.
  • Bathroom & Kitchen Renovations- These renovations can enhance the functionality of your home and increase its value.
  • Turn-Key-Contract- Start-to-end Sydney granny flat design and build contracts, so you have peace of mind.
  • Design & Council Approvals – Complete design & approval packages through CDC or DA .
  • Dual Occupancies– We can help design and build a townhouse, villa or a dual duplex that can be an excellent addition to your portfolio

Our Granny Flat Building Process

  1. Step One 1.

    Contact us to book your free site inspection with one of our experienced building consultants.

  2. Step Two 2.

    Preparation and acceptance of your fixed price quotation.

  3. Step Three 3.

    Commence your external & interior design.

  4. Step Four 4.

    Lodge & obtain your approval through CDC or DA.

  5. Step Five 5.

    Select your internal & external colours & materials.

  6. Step Six 6.

    Signing of residential building contract.

  7. Step Seven 7.

    Commencement of construction on site.

Why Choose A1 Granny Flats?

  • Australia’s best and most experienced builders with over 30 years of industry experience
  • Licensed and insured granny flat builder in Sydney
  • MBA certified and accredited
  • We give expert investment advice
  • 10-week granny flat build time
  • Customised designs, layouts and plans
  • Upfront pricing and affordable granny flats’ cost
  • Various finance options available
  • Start to finish design, approvals and construction services
  • All work covered with guarantees
  • Handle turnkey projects
  • Timely completion of granny flats Sydney construction

For superior customised granny flats in Sydney, and more information about our services, feel free to call A1 Granny Flats at 1300 941 037 You can also contact us via this online form.

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