Is My Block Suitable for a Dual Occupancy Development?
As land values continue to rise, more homeowners are exploring dual occupancy developments as a way to unlock the value of their existing property. Whether you’re looking to create rental income, build housing for family members or generate long-term wealth, the first question is always the same:
Is my block suitable for a dual occupancy development?
The good news is that many suburban blocks can accommodate a dual occupancy project. However, several factors will determine what’s possible on your site.
What Is a Dual Occupancy Development?
A dual occupancy development involves building two homes on a single block of land.
This could mean:
Retaining your existing home and building another behind it
Demolishing your existing home and constructing two new homes
Creating two separate dwellings that can be sold or retained
Every site is different, which is why understanding your property’s potential is the first step.
Key Factors That Influence Suitability
Block Size
While there is no universal minimum block size, larger blocks generally provide more flexibility. As a guide, many councils set minimum lot sizes for dual occupancy around 650m², though this varies by zoning and local planning scheme — some smaller sites can still be suitable depending on design and local requirements. It’s worth checking the specific controls that apply to your council area rather than treating any single figure as a fixed rule.
Block Width and Existing Home Position
A wider frontage tends to make vehicle access easier and gives more flexibility in how the two dwellings are laid out on the block.
If you plan to retain your existing home, its position matters too. Homes set closer to the front boundary generally leave more room to build behind while still meeting access and private open space requirements.
Corner Blocks
Corner blocks are often highly sought after for dual occupancy projects, since separate street frontages can simplify vehicle access and improve resale appeal by giving each dwelling more privacy and street presence.
Slope and Site Conditions
Flat sites are generally simpler and more cost-effective to develop. A significant fall across the block, easements, retaining walls, existing vegetation or drainage requirements can all add to development costs, so these are worth assessing early.
Zoning and Planning Controls
Local council planning controls will ultimately determine what can be built. This typically includes zoning, overlays, neighbourhood character requirements, private open space provisions and vehicle access requirements.
The Best Way to Find Out
Every block is different. The most accurate way to understand your property’s potential is through a professional site assessment that considers planning controls, site constraints, access requirements and development opportunities.
A dual occupancy specialist can help determine:
Whether your block is suitable
What type of development is possible
Potential costs
Likely timelines
Expected outcomes
Thinking about a dual occupancy project? A site assessment is the first step to understanding what’s possible on your land.
