Common Mistakes First Home Buyers Make Buying a Duplex

A duplex can be a smart first step into property, as long as you plan the finances around the home you live in.

For McKinnon buyers, the appeal is easy to see. McKinnon sits on the Frankston train line, and a duplex can offer more space or a second dwelling on the same block. The pitfalls tend to come from treating a duplex like a standard house purchase. Getting a few early decisions right keeps your first home buyer plans on solid ground.

Do First Home Buyers Get Stamp Duty Relief on a Duplex in Victoria?

Possibly, depending on the dutiable value of the property and whether you will live in it. In Victoria, first home buyers pay no land transfer duty up to $600,000 in dutiable value, receive a reduced amount between $600,000 and $750,000, and pay standard rates above $750,000.

The exemption and concession apply to established homes, new homes and vacant land. You must live in the property as your principal place of residence for at least 12 months, starting within 12 months of settlement. Duplex values can vary widely, so the value you are buying is the first thing to check against these thresholds.

The Victorian first home owner grant is $10,000, but it only applies to new homes that have never been sold or lived in, with a dutiable value up to $750,000. An older duplex will not qualify. Before you sign anything, confirm your eligibility for first home buyer stamp duty concessions and grants with the State Revenue Office Victoria or your conveyancer.

Should Rent From the Second Dwelling Shape Your First Home Buyer Budget?

No. Build your budget on what you can afford from your own income, and treat any rent from the second dwelling as a bonus. Lenders set their own policies on how they count rental income, so ask early how your lender will treat it in your home loan application.

Consider a couple buying their first home together who are drawn to a duplex because the second dwelling could be rented out. They arrange a pre-approval and decide to test the numbers without any rent at all. As an illustrative example only, a $600,000 loan over 30 years at 6.75% p.a. has repayments of about $3,892 a month. That figure is for principal and interest, and it excludes council rates, insurance and maintenance on both dwellings.

With that number in front of them, the couple compare it with their take-home pay and set a comfortable spending limit. They then decide any rent will go towards extra repayments or a buffer, not towards meeting the monthly commitment. Their borrowing limit comes from the lender, and a quick look at your borrowing capacity shows what you could be approved for before you start inspecting. Their outcome is a budget that still works if the second dwelling sits vacant for a few months.

Which Low Deposit Options Suit a Duplex Purchase?

Two federal schemes can help with a smaller deposit, and each has different rules about living in and renting out the property. Your choice of scheme can rule a duplex in or out, so check this before you make an offer.

Under the Australian Government 5% Deposit Scheme, eligible first home buyers can buy with a 5% deposit and avoid Lenders Mortgage Insurance (LMI). You must live in the property as an owner-occupier and move in within six months of settlement. In Victoria the price cap is $950,000 for Melbourne and Geelong and $650,000 for other areas. The cap for a particular property depends on its suburb and postcode in Housing Australia's postcode search tool. The trade-off is a larger loan, which means higher repayments and less equity in the early years.

Help to Buy is a shared equity scheme in which the government contributes between 5% and 40% of the purchase price, depending on whether the home is new or existing. For the period from 1 July 2026 to 30 June 2027, the income threshold is $103,000 for an individual and $165,000 for joint applicants. The trade-off for a duplex buyer is significant. While the government holds a share, you cannot rent or license any part of the property, including a room, unless Housing Australia gives written approval. That can conflict with the idea of renting out the second dwelling. Participating lenders are also limited to a short list, and some have their own restrictions on property types.

The two schemes are not combined. Each is accessed through a participating lender. Our home loans team can compare these options with a standard low deposit loan for your situation.

Why Pre-Approval Should Come Before Your First Offer

Get pre-approval first, because it sets your price range and confirms which schemes you can use. Housing Australia advises buyers not to put down a deposit or bid at auction before they have conditional approval under Help to Buy, and not to pay more than the maximum price in the approval letter.

A duplex adds one more question to your first home loan application: how the lender views the property. Some lenders have their own rules on property types, so the lender you choose can affect which duplex you can buy. Raising this before you start inspecting saves you from falling for a property your lender will not finance.

If you plan to use the First Home Super Saver scheme, timing matters too. You must request a determination from the ATO before ownership of any property transfers to you, which generally follows settlement. You can count up to $15,000 of voluntary contributions per financial year and $50,000 in total. Ask your accountant how it applies to you, as tax outcomes depend on your circumstances. Our guide to buying your first home covers the wider process.

Call one of our team or book an appointment at a time that works for you. We will talk through your deposit, your budget and the duplex you have in mind, so you can make an offer with confidence.

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