As land values continue to rise, more homeowners and investors are looking for smarter ways to unlock the full potential of their block.
A duplex offers the opportunity to build two homes on one site, creating flexibility for family living, rental income or future resale.
What Is a Duplex?
A duplex generally refers to two homes built on one lot, commonly in an attached side-by-side format. In planning language, attached dual occupancies are a recognised housing type, and in the market these are often referred to as duplexes or semis.
Planning and Approval
What you can build depends on your block, zoning, setbacks, site width, parking and local planning controls. In NSW, attached dual occupancies are a defined housing type, but eligibility depends on the site and approval pathway
At Perry Homes, we can help you choose a duplex design that suits your land, your goals and your local planning context. Whether you want to build for investment, family flexibility or future resale, our team can guide you through the design and build process with confidence.

A duplex can be a smart option if you want to:
Learn from our frequently asked duplex building questions.
A duplex is a property that includes two separate dwellings built on the same block of land. These homes are often attached side-by-side, with each residence having its own entrance, living spaces and amenities.
A duplex can be a smart investment for homeowners and investors wanting to maximise the value of their land. It may provide the opportunity to live in one dwelling and rent or sell the other, or generate income from both homes.
Whether you can build a duplex depends on factors such as zoning, block size, frontage, setbacks and local council or planning requirements. A builder experienced in duplex designs can help assess whether your land is suitable.
Building a duplex can help you make better use of your land, create flexible living options for family, increase potential rental income and improve the overall value of your property.
Good duplex design should consider privacy, separate access, parking, natural light, outdoor space and layout efficiency. The goal is to ensure both homes feel comfortable, practical and independent.


