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House behind a house
House behind a house
House behind a house

House Behind a House Property Development

Providing your existing home is located in such a position that it complies with the residential design codes, or R-Codes as they are often referred to, building a new house behind an existing house is a great way to get into property development.

We will manage the entire subdivision process on your behalf, creating two separate blocks, one for your existing property and one for the new dwelling.

We can also assist with arranging finance for the development, which is often quite straightforward if you already own the land and have built up some equity over the years.

Further information

In order to determine the most feasible approach to your property development project we strongly advise that a contour and feature survey of the entire property be carried out early in the process.

This is a relatively small investment and provides you (and us) with all of the information required to ensure the entire property development solution is compliant with all requirements and policies.

The survey will also allow us to provide more accurate costings for each dwelling and ultimately calculate the likely return on your investment.

The most common zonings and area calculations to build a house behind house property development are as follows.

Zoning Total Required Land Area Minimum Site Area For Each Property
R20 900m2 350m2
R25 700m2 300m2
R30 600m2 260m2
R40 440m2 180m2

Note: The driveway or access leg to the front street must also be calculated and factored into the equation for overall subdivision compliance.

There are many factors to consider for compliance and approval when building a house behind house property development.

Here are just a few of the considerations you need to be aware of:

  • Driveways to the rear dwelling are usually required to be 4m wide, however if the existing home is kept, the distance between it and the side boundary may be reduced to less than 4m.
  • If the property has a laneway at the rear it may be possible to keep the front house and build a new unit or townhouse behind which can face the laneway with its own entry and garage. With this type of development it is usually necessary to provide a 1.5m wide access leg to the front street for service run-ins and rubbish bin pickups.
  • Minimum site areas, minimum courtyard areas and store rooms for both homes also need to be taken into consideration.
  • If you intend keeping both homes it may be possible to develop the existing development site and build an additional unit or townhouse without having to complete the subdivision process or secure a title for each property until you wish to sell one or the other.
  • Both the new and existing property will need to comply with the local council planning policies. This may result in the need for renovations and additions to the existing house such as a new garage, carport and/or store room.

These are just a few examples, we recommend you speak to us to ensure you are fully aware of all requirements for house behind house developments in Perth.

We know that property developers in Perth need a competitive, fixed price cost in order to ensure the numbers stack up.

That’s why we supply you with a confirmed letter of quote including preliminary site costs and specification, all itemised for complete transparency.

Ready to get started? Get in touch and we can help by providing you with:

  • A feasibility & risk assessment
  • Block yield calculations
  • Buyer demand analysis

Need Some Advice for Your Property Development?

Whether you're a first timer or an experienced developer, we're here to offer our support, advice and expertise.

Get in touch and we can help get started with:

  • A feasibility & risk assessment
  • Block yield calculations
  • Buyer demand analysis

  CALL 08 9240 6020