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About This Service

Your Expert & Trusted Duplex Builders in Sydney

Our team of expert Sydney duplex builders can help realise your potential in property development, building stunning duplexes that are perfect for your needs. Bring to us your ideas, and together we will craft a dual occupancy development that ensures the best return on investment possible for you.

With over 20 years experience in home building, you can trust Kobo to deliver excellence when it comes to your new Sydney duplex. From private clients to large property developers, we have the expertise to deeply understand your project and build a dual home that aligns with your dream perfectly.

As one of Sydney's most trusted residential builders, Kobo Projects will deliver your duplex on time, on budget, and at the highest quality.

We work with the highest level of craftmanship across every trade in your duplex project, using premium materials that are hand-selected for their visual appeal and longevity. Our professional team is here to help you decide what design is best for you and your purposes.

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Maximise ROI with Custom Duplexes Tailored to Your Needs

Building a duplex in Sydney can bring in great returns on your investment. Our team aims to maximise the potential of your property by combining deliberate planning, expert craftmanship, and decades of experience to build a duplex that gets the highest ROI possible.

Kobo are a team of Sydney duplex builders who you can not only trust to deliver your dual home development on budget, but one who understands the market and can give expert suggestions when needed.

We listen to your vision and goals to customise your duplex home to your family's lifestyle or create the perfect investment property.

Whether you plan to live in one side and rent the other out or are looking to eventually sell and get the most for your money, Kobo's design and construction process is to work very intimately with you from the get-go to ensure your dream is achieved.

From side-by-side duplex homes to townhouses and even triplexes, our multi-residential home builders are here to build for maximum space and incredible value for money. Perfect for investors, you can choose to rent one out and live in the other side, rent out both, or sell.

Whatever your goals are, Kobo want to ensure you get the best out of your money whilst tailored perfectly for your needs.

A corner duplex home built in Sydney

Reliable & Experienced Custom Duplex Builders in Sydney

We understand how important it is to choose the right builder for your investment. After all, if you partner with the right duplex builder, your dual home will see huge returns on your investment in the long run. When working with Kobo, you're working with 20 years of construction excellence. Our expertise across multi-residential construction gives us the ability to orchestrate the design, development, and build of perfect duplex homes across Sydney.

With a committed team of expert tradesmen and loyalty to our clients, your build is in the safest hands with Kobo. We sit down and work out all the little details with you to bring to life your creative input at every stage of the project. Our experienced team is there to answer any of your questions to ensure you feel confident during the entire process.

Benefits of a Sydney duplex with Kobo

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    You can live in one of the duplex units and rent out the other
  • 7FF0FB15-CE6C-4E89-B545-0345B9759FF2
    Rent out both units to diversify income streams
  • 7FF0FB15-CE6C-4E89-B545-0345B9759FF2
    Get the most out of your property with two rental incomes
  • 7FF0FB15-CE6C-4E89-B545-0345B9759FF2
    Sell both properties for a higher return on invesment
  • 7FF0FB15-CE6C-4E89-B545-0345B9759FF2
    Accommodate and live close to elderly family members

Sydney's Leaders in Dual Occupancy Design & Building

In the realm of real estate, the term 'multi-residential development' often gets thrown around, sometimes seeming like just another industry buzzword. But what it truly signifies is the opportunity for you to craft your ideal living space, tailored precisely to your desires and needs.

At Kobo Projects, we recognise the diverse tapestry of Sydney families and aspiring homeowners. Our Sydney dual occupancy homes are not just structures... they are reflections of your lifestyle aspirations or investment visions.

Navigating the complexities of council regulations and permits can be a headache, but with us, you can breathe easy. We handle everything - from initial feasibility studies to securing necessary approvals, from subdivision to the final touches of construction. With our comprehensive project management support, your journey from concept to completion is smooth sailing.

Our portfolio speaks volumes. Whether you're eyeing narrow plots or expansive estates, our modern duplex designs cater to all. From innovative window placements to ensure ample natural light to strategic layouts that prioritise your privacy, every aspect of your custom duplex is meticulously considered and executed.

Partner with us and tap into our wealth of experience and a proven track record of excellence. Let us help you unlock the full potential of your land, transforming your vision into reality, no matter how ambitious it may be.



Throughout the construction process, communication was seamless. Kobo projects kept us informed at every stage, providing updates and addressing any questions or concerns promptly. Their transparency and reliability made the entire journey stress-free.


Working with Koboprojects was a fantastic experience. The attention to detail and commitment to quality in our new build exceeded our expectations. The communication throughout the process was excellent, making the entire journey smooth and stress-free. We now have our dream home, thanks to Koboprojects.


The level of professionalism and attention to detail displayed by the entire team was exceptional. They took the time to understand our vision and requirements, and their expertise and creativity truly brought our dream project to life.


We are thrilled with the craftsmanship and professionalism displayed by Koboprojects during the construction of our new home. Joe’s expertise, dedication, and adherence to timelines made the entire project a pleasure. Our sincere thanks for turning our vision into reality!"


It was a pleasure working with Kobo Projects, and I have no hesitation in recommending their services to anyone in need of a construction partner they can trust. Thank you for making our vision a reality, and we look forward to collaborating with you again in the future.


We couldn't be happier with the outcome of our new build, all thanks to koboprojects. The meticulous attention to detail and the ability to bring our ideas to life were remarkable. If you're looking for a reliable and skilled builder, koboprojects is the one to trust.

A duplex home in Sydney built by our duplex builders

Why Build a Duplex with Kobo?

Investing in a duplex can potentially double the value of your property, but only if you team up with the right construction experts.

At Kobo Projects, we understand the pivotal role a competent home builder plays in your investment journey. With decades of expertise in multi-residential construction, we possess the skills to craft duplexes tailored precisely to your preferences.

Duplexes offer an immediate boost to your property's value, unlike single homes that may take years to appreciate. In the bustling real estate market of Sydney, duplex construction presents an enticing opportunity for value creation, especially in proximity to essential amenities like public transport hubs and schools.

Perhaps you aim to generate dual income streams or unlock instant cash flow without the burden of purchasing additional land. Or maybe you're eyeing the potential to leverage equity from your new duplex for further property ventures. Whatever your long-term property aspirations, our team is dedicated to assisting you every step of the way.

We meticulously handle every aspect of your project, ensuring your creative vision is realised at each stage. With our seasoned professionals by your side, you can rest assured that all your queries will be addressed, fostering confidence throughout the entire process. Wake up to a bespoke multi-dwelling home that aligns perfectly with your lifestyle and investment goals.

Our Easy 7 Step Process to Building Your Custom Duplex

Step 1

Reach out about your vision

Please don't hesitate to contact us via our "Contact Us" section, or if you prefer a friendly conversation, don't hesitate to give us a call. We genuinely enjoy getting to know you and learning about your ideas and vision. If it appears that we're a good fit, we'll schedule an in-person meeting at your location.

Step 2

Face to face meeting

During our face-to-face meeting, we'll discuss your plans, whether they're still in your thoughts or already documented on paper, and begin conversations about timelines, necessary documentation, and how everything will come together. Do some homework and come prepared with inspiration ideas, photos, preferred styles, required functionalities, or any other elements that will aid our design team in crafting the ideal design for you.

Step 3

Design & Quote

We'll then offer a design proposal and a cost estimate (not the final quote). If you wish to proceed, we'll send a preliminary agreement, beginning the design process. Following approval for floor plans & elevations, we'll provide a final cost estimate. We'll refine the quote until it's ready for the construction phase, bearing in mind possible adjustments based on consultant documents like geotechnical reports, structural designs, & BASIX requirements.

Step 4


Upon acceptance of the quote, we'll proceed with construction plans, BASIX certificate, structural design, and more for CDC or DA submission. Our building designer will handle plan submission and obtain the necessary construction certificate to initiate the building process!

Step 5

Contracts Signed & Commencement

Once all documentation is in hand, we'll complete the quote, sign contracts, and begin the project! We'll mutually agree on a start date, and once construction begins, we'll schedule regular site visits to ensure your satisfaction, provide updates, and accommodate any inclusion changes if desired.

Step 6

Construction Begins

This is where the magic happens! Our expert team begins construction of your stunning new residential or commercial project on the agreed upon date. We make sure to keep you in the loop the entire build and aim to build with minimal disruptions. Our expert team gets to work to make your dream happen.

Step 7

Handover & Aftercare

The long-awaited day has come! We'll hand over the keys to your new home and conduct a walkthrough to ensure everything is in order. Over time, it's natural to come across minor issues, and we'll always be available to address any concerns or defects you may encounter, ensuring you are happy with everything in your build.

Here's Why We're Trusted by Over 60 Families to Build Their Duplex

over 20+ years of Experience

With over 20 years of dedicated service in Sydney, our expertise in project management sets us apart. We understand the intricacies of handling budgets and timelines, ensuring that every project is executed to the highest standards without compromising quality or cutting corners.

We actually Build custom

At Kobo Projects, we defy the norm of limited choices in custom duplex home building. With our industry leading architects, you get full control over every aspect of your design. Say bye-bye to cookie-cutter options and hello to a unique duplex crafted just for you.

We Keep Costs (and Stress) Down

Our proven process minimises duplex building costs and keeps quality up. With our expertise, you get two homes for the price of one. From planning to construction, our project management ensures timely, budget-friendly delivery. Trust us to maximise value without extra expenses.

One-On-One Approach

We excel in delivering exceptional work, giving one-on-one attention to all of our clients by remaining intentionally small. This allows us to provide intimate support, ensuring your vision becomes reality. With us, you're not just a project, you're a valued partner in creating something incredible.

Suburbs We Build In

Our Projects.

Jbeil Restaurent Fit Out
Enfield, Sydney
Alchemy Retail Fit Out
New build
Killara New Build
Killara, Sydney

Looking to build in Sydney?

Come visit us for a free consultation and see how we can bring your residential or commercial space to life!
Building? Get in touch with kobo today
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Kobo Projects are one of the leading residential and commercial builders in Sydney, taking immense pride in our approachability, quality craftmanship, eye for precision, and client focused approach to building. You can trust Kobo to build your dream.

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