Modern and minimal living room by custom builders Orth Property Group in Sydney

Custom builders Sydney — creating your dream home

Ready to reimagine your home, expand your living space or design your custom new home from scratch? Our highly experienced team and network of trusted trades can make it happen — from concept development, design and construction to handing over the keys. You dream it, we build it.

 

Let’s transform your vision into a beautiful and functional sanctuary that you’ll love for years to come.

 

At Orth Property Group, we bring decades of experience, a passion for exceptional craftsmanship and a commitment to delivering homes that are as unique as the families who live in them. 

Allow us to take the stress out of building by managing the entire process for you. As experienced custom builders in Sydney, our family-owned and run company has expertise across every facet of property development. We take the time to understand your family's needs, style and budget to create a design that fits your vision perfectly — and will feel exceptional to live in, too.

 

Home renovations, extensions and custom new builds, designed with precision and care

 

The Australian way of life is at the core of our design philosophy. Picture long summer evenings, laughter, family gatherings and children splashing in the pool — this seamless indoor-outdoor living is an essential part of our cultural DNA and we make it central to every home we create or renovate.

You also need a home that works with Australia's challenging climate, rather than against it. We prioritise energy efficiency, smart design principles and natural or recycled materials where possible, creating comfortable living spaces year-round while minimising your environmental impact.

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If this sounds like you, we’re here to help:

 
Light-filled bathroom by Orth Property Group, Sydney custom builders
 
 

You dream of designing and building your own perfect home, a spacious and connective place where your family and friends can spread out, relax and entertain.

You’ve renovated before but found the process difficult and time-consuming with underwhelming results — you know you need expert advice every step of the way.

You have an older house that’s full of original features and unique character that you’d love to preserve, while creating a more liveable and light-filled place to call home.

Your family is growing and you need more room — an extra bedroom, study or home office, granny flat, luxurious swimming pool or even a completely custom new build.

You need pro-level help figuring out how to use your available space best to create a functional yet elegant home, for the best possible value.

  • "We cannot thank the team enough for making this project so enjoyable"

    “The Orth Property Group team beyond-delivered on creating our dream home, supporting and advising us as we made decisions along the way, removing the overwhelm and creating a seamless and smooth process for us. The site was always immaculate and the entire team were accommodating in all requests that we had. We cannot thank the team enough for making this project so enjoyable for us as we created our family home.”

    — Julia Baldock, Sydney

  • "The team was fast, efficient, and easy to communicate with"

    "Orth Property Group provided an outstanding experience with our window replacements. The team was fast, efficient, and easy to communicate with. Larissa managed the entire project seamlessly from start to finish, and the labourers were polite, respectful and ensured the workspace was clean at the end of each day. We couldn’t be happier with the results and highly recommend Larissa and the OPG team!

    — Kelly & Dan Harris, Belrose, Sydney

  • “A builder who delivers exceptional results with care and attention to detail.”

    “From the very beginning, Phil and Rob exceeded our expectations. What could have been a stressful process was made remarkably smooth thanks to their proactive communication and problem-solving. If you’re looking for a builder who delivers exceptional results with care and attention to detail, look no further. We can’t recommend them highly enough!”
    – Wen Lim, Newtown Project

Let’s build your dream Sydney home

  • Home renovations

    Ready to make your home more stylish, comfortable, efficient and truly you? From kitchen and bathroom makeovers to complete home renos, we can handle every element.

  • Custom new home builds

    Step beyond the norm with a custom home built to fit your unique lifestyle perfectly. From concept to completion, we work closely with architects, planners and trusted trades.

  • Home extensions

    Expand your living space with a second-storey loft, a luxurious in-ground pool or a space-savvy studio out the back — whatever you need, our team can help.

Book your free consult
The Orth siblings: Larissa, Phillip, Robert and Peter with their father

We’ll care for you like family — because we’re a family ourselves

Orth Property Group is owned and run by four siblings: Larissa, Phillip, Robert and Peter. Together, we have a combined 100+ years of experience across almost every type of property development project you can imagine.

Supported by our skilled team and a network of trusted trades, many of whom we’ve worked with for 20+ years, we can oversee the entire build process from start to finish:

  • Consultation: Understanding your vision, needs and budget.

  • Design: Collaborating with architects and ensuring plans are practical and within budget.

  • Construction: Transparent communication, skilled tradespeople and adherence to timelines.

  • Handover: A final walkthrough to ensure you’re satisfied with every detail.

Choose the right builder for your dream home

Building or renovating is one of life’s big investments and having the right team on your side is crucial. Our process begins with listening – understanding your lifestyle, needs and hopes – and ends with a home built with the same care we’d give our own.

From our family to yours, let’s create the home you’ve always dreamed of. Book your free consultation with our team today.

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 Frequently asked questions

  • Project timelines depend on the size and complexity of the work. Renovations might take 6–12 weeks, while custom builds and larger extensions can range from 6–12 months. We'll provide a detailed schedule during the planning phase.

  • Yes, if needed, we can handle all necessary permits, approvals, and compliance requirements, ensuring a smooth process from start to finish. You can trust us to navigate local regulations on your behalf.

  • We start with a free consultation to discuss your ideas, budget and timeline. From there, we provide a detailed quote and plan. Once approved, we move into design and construction.

  • We provide a detailed cost breakdown upfront and maintain open communication throughout the project. Our team is especially skilled at creative problem-solving to ensure high-quality results while remaining within budget.

    Also, bringing us on as your builder right from the beginning ensures practicality and cost-efficiency. While architects focus on design, builders work with budgets and the realities of construction, offering invaluable insights early on. This helps prevent costly mistakes and reduces the likelihood of variations later, which can be expensive and disruptive, often forcing last-minute compromises under tight deadlines.

    By planning thoroughly from the outset with us as your builder, you avoid settling for what’s available and achieve a well-executed, cost-effective project.

  • It depends on the scope of the renovation. For smaller projects, staying at home may be possible but for larger or more disruptive work, you may wish to move to alternative accommodation temporarily for your convenience and safety.

  • Absolutely. We can focus on individual areas like kitchens or bathrooms or take on whole-home renovations. Whatever your needs, we tailor our approach to meet them.

  • Our custom home builds cover everything from initial consultations and design to construction and final handover. We can also collaborate with architects, interior designers and planners and oversee all trades and suppliers to ensure a seamless experience.

  • Yes, we specialise in designing extensions that blend seamlessly with your home’s existing architecture while incorporating modern, functional features.

  • We design homes that work with Australia's challenging climate, rather than against it. We prioritise energy efficiency and smart design principles that help manage our harsh summers and cool winters, to create comfortable living spaces year-round, while minimising environmental impact.

    We can integrate features such as solar panels, efficient insulation, double glazing, water-saving fixtures, and passive design principles to enhance your home’s energy efficiency.