Building Design
Building Design
Town Planning
Town Planning
New House Plans
New House Plans
Renovations
Renovations
Duplex Designs
Duplex Designs
Granny Flats
Granny Flats
Commercial & Industrial
Commercial & Industrial
Childcare Design
Childcare Design
Class 2 Regulated Buildings
Class 2 Regulated Buildings
Development Applications
Development Applications
Construction Certificates
Construction Certificates
Complying Development Certificates
Complying Development Certificates
Sydney
Sydney
Newcastle
Newcastle
Central Coast
Central Coast
Maitland
Maitland
Hunter Valley
Hunter Valley
Nelson Bay
Nelson Bay
Cooma
Cooma
Tamworth
Tamworth
Cessnock
Cessnock
Singleton
Singleton
Bulahdelah
Bulahdelah
Muswellbrook
Muswellbrook

Duplex Designs Newcastle

Thinking of building an investment property in Newcastle? We recommend investing in a duplex design. A solid investment, a duplex can increase in value and provide high rental yields for a much lower price than a detached house. Plus, by subdividing and servicing each of the properties individually, you can customise them to meet the needs of your tenants and increase the potential value.

At Sorensen Design & Planning, we’ve been creating stylish duplex designs in Newcastle for over 20 years. Our director Adrian Sorensen is an accredited professional chartered building designer with the BDAA and has structural engineering qualifications to ensure your duplex looks sensational and structurally sound. Our practice is also Class 2 Accredited under the NSW Design & Building Practitioner Act, therefore we have the thorough expertise and years of experience to design your new dual occupancy!

Contact us for same-day quotations and expert advice about the cost and practicalities of your duplex design in Newcastle!

Other services we can help you with

Home design projects in New South Wales

Benefits of building a duplex

A duplex is a dual occupancy dwelling on one block of land with two separate living quarters and separate entrances for two sets of occupants. Dual occupancy homes come with a huge range of benefits, whether you’re planning to live in the duplex or rent it out for additional income.

Ideal for downsizing

Once your children have grown up and flown the nest, you might feel like you’re not utilising all of the space in your family home anymore.

Rather than selling and downsizing to a smaller house, we recommend investing in a duplex home — not only will you have a contemporary open-plan home with lots of space for friends and family, but you will also have a rental property on the other side to contribute to your retirement nest egg.

Ideal for first-home buyers

Are you a first-home buyer thinking of building instead? A duplex might be the perfect solution! You’ll have a new house on one side and another home to rent out on the other, creating a steady stream of income to help pay off your mortgage. It’ll also save you the hassle of living with roommates in your own home.

Ideal for investing

As you can see, duplex homes are an excellent investment. You can fit two homes on one narrow block of land and get double the return as a single dwelling — plus, you can choose to either rent out the second dwelling or sell it completely to make a profit.

Ideal for multigenerational living

If you have elderly family members who need extra care and attention or teens who need their own space, a duplex can be a major asset for your family. Your family members can have their own living space, and you will essentially be neighbours, so you can keep an eye on them and be there to help in the event of an emergency.

Contact us for help designing your dream home or investment property

At Sorensen Design & Planning, we’re the experts when it comes to duplex designs in Newcastle — whether your plan needs to be side-by-side or dual occupancy, we can manage the entire project from concept to building. Contact us for a same-day quotation — let’s start the building process now!

3D building software

[@portabletext/react] Unknown block type "image", specify a component for it in the `components.types` prop

We utilise ArchiCAD’s 3D building design software to deliver stunning dual-living designs for our clients.


This innovative software allows us to design, visualise, document, edit and deliver new duplex plans in the form of high-resolution 3D images — we can even provide a walkthrough of your dream home or investment before we have even begun construction. You can see the high-quality workmanship, textures, colours, materials and finishes and make changes before a single brick has been laid.

FAQs about our duplex designs in Newcastle

  • How much does it cost to design a duplex?

    The cost of a duplex design varies based on the size and complexity of the project, which is why we quote each project individually once we have discussed the brief with you. You will be aware of the project's design and related town planning fees from day one — we are very transparent about our pricing, so you won’t have to worry about unexpected costs down the line.

    We also engage relevant external consultants throughout the process and refer you to estimators/builders to provide project construction costs. Contact us for a free fee proposal today.

  • What other services do you offer?

    Not sold on building a duplex? We also offer a range of other services and building types, including new home designs and granny flats.

  • How long will the project take to complete?

    This will depend on the size and scope of the project, as well as the number of changes required from the client. However, we strive to provide fast, thorough and efficient design services so that you can review the concept plans as soon as possible. Contact us for more information about our designs in the Newcastle region, the Hunter Valley and Central Coast, Nelson Bay, Port Stephens, and New South Wales.