Why should you consider building a duplex?

Why should you consider building a duplex?

When looking for ideas on what type of house to build on your land (either a new block or a knock-down rebuild block), perhaps you should consider building a duplex.

What is a duplex?

A duplex is often considered a residential building containing two homes that are attached along a common central wall, (also known as a party wall). As such they are usually a mirror image of each other in layout, but this is not mandatory.

Why build a duplex?

After facilitating over 300 duplex builds, ZAC Homes has seen the advantages of building a duplex – especially in the Sydney market.


  • Take ‌advantage‌ ‌of‌ the ‌whole‌ ‌block‌ ‌
  • Reduce ‌your building‌ ‌costs‌ ‌because you are building 2 at the same time
  • Lower‌ ‌your stamp‌ ‌duty,‌ ‌holding‌ ‌fees,‌ ‌insurance‌ ‌costs ‌and‌ ‌council‌ ‌rates‌ ‌
  • Have no‌ ‌strata‌ ‌fees‌
  • ‌Offer higher‌ ‌tax‌ ‌depreciation

But the‌ ‌absolutely best‌ reason to build a duplex is‌ ‌the‌ ‌ability‌ ‌to‌ increase the money in your bank account! How? Well, when you build a duplex, you have the opportunity to:

  • Gain two rental incomes instead of one OR
  • Sell two homes instead of one OR
  • Live in one and rent/sell the other to help cover the cost of building your new home

No matter which option you choose, you’ll still gain a financial advantage.

Things to consider when building a duplex

If‌ ‌building‌ ‌a‌ ‌duplex‌ ‌appeals‌ ‌to‌ ‌you,‌ ‌ask yourself the following questions before getting‌ ‌started:‌

  • ‌Do you have a viable‌ ‌budget‌?
  • Is the size and ‌orientation‌ ‌of‌ ‌your‌ ‌land‌ ‌suitable for a duplex?
  • What duplex size and internal layout ‌would you like?
  • Will it include a garage or on street parking?
  • What is the possible‌ ‌impact‌ ‌on‌ ‌neighbouring‌ ‌properties‌?
  • What is the zoning of your land?

Knowing the answers to these questions will help you better plan your building project.

Setting yourself up for success

ZAC Homes is your local duplex expert. We can advise‌ ‌you on how to‌ ‌get‌ ‌the‌ ‌most‌ ‌value‌ ‌out‌ ‌of‌ ‌your‌ project, including choosing the best size, position and house style. At ZAC Homes, we‌ ‌take‌ ‌care‌ ‌of‌ ‌everything‌ including ‌design,‌ ‌approvals,‌ ‌demolition‌‌ (if‌ ‌required) ‌and‌ ‌construction. We’re here to guide you every step of the way.

If you would like to explore the opportunities in building a duplex, give us a call today.

Want more information?

Contact our team using the form or using the details below

Phone: 1300 350 793

Email: sales@zachomes.com.au

Address: Unit 6, 119 Coreen Avenue, Penrith, 2750

Book an appointment online or visit us at our display homes at Box Hill and Marsden Park

…ZAC Homes kept us regularly up to date with the progress of our home and the job was finished on time, which was very important to us. We are one hundred percent happy with our home and can thoroughly recommend ZAC Homes and their crew to anyone contemplating building a home.

Bilynda & Paul Robins

…Firstly I would like to thank the ZAC homes team for the experience that my wife and I have had when making the purchase of an investment property. The professionalism and dedication that was displayed, was by far the best that we have seen or experienced previously.

Bob F.

I can not speak more highly of this local building company. Right from the beginning they have been excellent to deal with…The finishes were very good and any work that I wanted fixed which was minor things was done


Very well managed with no hidden cost or surprises. Workmanship was excellent and very professional


Really pleased with the building process, communication and designs. Would definitely recommend.

Hannah Johnston

The customer service and assistance was superb with quick turn around times and patience with our queries. Everything from initial consultation, to colour selection to hand-over was organised easily and open communication was maintained throughout the process.

Daniel North
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