Duplex

A duplex is two separate homes built on one block of land, sharing a common central wall. Each residence has its own front entrance, kitchen, bathrooms and living spaces, functioning as completely independent homes.

Duplexes can be configured as side-by-side or front-and-back layouts, depending on your block size and shape. In Perth, duplex developments are popular for investors seeking dual rental income and/or families wanting multi-generational living arrangements.

In Perth and Western Australia, you’ll typically need your block zoned between R20 and R60 to build a duplex development. The R-Codes (residential design codes) determines how many dwellings can be built on your land based on factors like block size, frontage width and location.

Different councils across Perth have varying requirements, so a block that qualifies in one suburb might not in another. Summit’s experienced Development Consultants understand Perth’s zoning regulations and can quickly assess whether your specific block is suitable for a duplex, helping you navigate the approval process from the start.

Green title means each duplex home sits on its own individual land title, giving owners complete ownership of their dwelling and land. This offers more flexibility for renovations, landscaping and future selling.

Strata title means both homes share the original land title, with ownership divided through a strata scheme. Whilst strata can be simpler initially, it may include strata fees and shared decision-making on common areas.

A duplex creates two separate dwellings on one block, whilst a triplex divides the land into three individual homes. Both share the principle of maximising your block’s potential, but the choice depends primarily on your land size and local zoning regulations.

Duplexes are more common in Perth as they require less land and often have simpler approval processes. Triplex developments can deliver greater returns but need larger blocks and higher density zoning. Our Development Consultants can assess your specific block and recommend whether a duplex or triplex suits your goals and budget.

Yes, many blocks with narrow frontages in Perth are perfectly suited for duplex developments. Single-storey duplex designs work well on blocks through side-by-side or rear-front configurations, whilst two-storey designs can maximise limited space on narrow blocks.

The key factors are your block’s total size, zoning classification and whether it meets council setback requirements. Some of our most successful duplex projects have been on narrow blocks where thoughtful design makes efficient use of available space. Summit Developments can help assess your block’s dimensions and constraints, then recommend duplex designs that work for your property.

Yes, with Green title subdivision, you can own one half of a duplex outright on its own individual land title. This means you have full ownership of your dwelling and the land it sits on, just like a traditional house. You’re not sharing ownership with anyone, and there are no strata fees or shared decision-making.

This arrangement is common for duplex developments in Perth and appeals to both owner-occupiers and investors.

With 47+ years building homes in Perth, we’ve helped countless property owners maximise their block’s potential through duplex developments. Our experienced Development Consultants handle everything – from initial site inspection and feasibility studies through to council approvals, construction and final handover.

We’re built around you, taking time to understand your goals whether you’re investing or creating multi-generational living space. You’ll receive a detailed fixed-price quote before you commit to building with Summit, so you know exact costs upfront. Get in touch with Summit to discuss your duplex development today.