The Pros and Cons of Buying a Duplex as a First Home

Buying a duplex as your first home puts you in a different category to someone purchasing a standalone house or an apartment.

A duplex can offer more space than an apartment at a lower price than a detached house, but the way lenders assess your application, the government schemes you can access, and the ongoing costs you'll carry all change depending on how that duplex is titled. If you're looking at a duplex in Canberra, understanding the difference between strata and community title could determine whether you qualify for certain concessions or which deposit scheme applies to your purchase.

How Lenders Treat Duplex Purchases

Most lenders treat a duplex the same way they treat a standard residential property, provided it's owner-occupied and titled as a single dwelling. Your borrowing capacity will be assessed based on your income, liabilities, and the property's value, just as it would be for a house. If the duplex is strata-titled or part of a community title scheme, some lenders may apply additional scrutiny or reduce the maximum loan-to-value ratio they're willing to offer. A duplex in Canberra's inner south on a community title, for instance, might attract a lower loan-to-value ratio than a freestanding home in the same suburb, depending on the lender's appetite for that title type.

Consider a buyer purchasing one half of a duplex in Holder. The property is owner-occupied and community titled. The lender values it at $680,000. The buyer has a 10% deposit saved and applies under the Australian Government 5% Deposit Scheme. Because the scheme allows a 5% deposit without lenders mortgage insurance, the buyer can preserve cash for settlement costs and furniture while still accessing competitive variable and fixed rate options through a participating lender. The duplex qualifies under the ACT price cap of $1,000,000, and because it's a new build completed within the last 12 months, the buyer also claims the ACT's full stamp duty exemption under the Home Buyer Concession, which from 1 July 2026 applies regardless of property value or household income.

Stamp Duty Concessions in the ACT

From 1 July 2026, eligible first home buyers in the ACT pay no conveyance duty on any property, regardless of price. The previous cap of $1,020,000 and the income threshold have both been removed. You must not have owned property in the last five years, and you or your domestic partner must live in the home as your principal place of residence for at least 12 months starting within one year of settlement. A duplex purchase in Canberra qualifies for this concession whether it's a new build or an established dwelling, and whether it's titled as strata, community, or a single parcel of land.

If you're purchasing an off-the-plan unit, including a duplex structured under a unit title, a separate exemption applies. From 1 July 2026, no duty applies to off-the-plan unit purchases with no property value cap, provided you occupy the property as your principal place of residence for at least one year starting within 12 months of completion. You don't need to be a first home buyer to access this exemption, but you do need to be an owner-occupier.

New Build Versus Established Duplex

If you're buying a newly built duplex, you won't have access to the ACT First Home Owner Grant because the territory discontinued it in 2019. The stamp duty exemption under the Home Buyer Concession is the primary incentive. If the duplex is part of a new strata or community scheme and you're buying off-the-plan, the unit exemption may apply instead, depending on how the contract is structured and when settlement occurs.

An established duplex in a suburb like Calwell or Kambah will still attract the full stamp duty exemption if you meet the eligibility criteria, but you won't receive a cash grant. The absence of a grant changes your upfront cash requirement. Where buyers in other states might receive $10,000 or $15,000 to put toward deposit or costs, ACT buyers rely entirely on saved funds, family gifts, or the First Home Super Saver Scheme to cover the gap between their deposit and what's needed at settlement.

Strata Fees and Ongoing Costs

One of the less obvious differences between buying a duplex and a standalone house is the potential for strata fees. If the duplex is strata-titled, you'll pay quarterly levies to cover shared insurance, maintenance of common property, and contributions to the sinking fund. These fees vary widely depending on the age of the development, the level of shared infrastructure, and how well the body corporate has planned for future repairs.

A duplex with minimal common property in a newer development might carry levies of $400 to $800 per quarter. A larger scheme with shared driveways, landscaping, or retaining walls could push that figure higher. Lenders account for these fees when calculating your borrowing capacity, so a property with high strata levies will reduce the amount you can borrow compared to a freestanding home with no body corporate.

If the duplex is on a single title or community title with no formal body corporate, you may not pay strata fees at all, but you'll need to clarify responsibility for shared walls, fences, and driveways. Some community title schemes include a management fee structure similar to strata, while others leave all maintenance decisions to individual owners.

Deposit Schemes and What You Can Combine

The Australian Government 5% Deposit Scheme allows you to purchase with a 5% deposit and no lenders mortgage insurance. The scheme applies to properties up to $1,000,000 in the ACT, and there's no income cap. You can combine this scheme with the ACT stamp duty exemption, which means you could buy a $700,000 duplex in Bonython with a $35,000 deposit, pay no stamp duty, and avoid LMI.

Help to Buy is also available in the ACT, but it cannot be used alongside the 5% Deposit Scheme. Under Help to Buy, the Australian Government contributes up to 30% of the purchase price for an existing home or 40% for a new home in exchange for an equity share. You'll need at least a 2% deposit, and your household income must be under $100,000 as a single applicant or $160,000 for couples or single parents. The property price cap varies by postcode and can be confirmed using the search tool at firsthomebuyers.gov.au. If you're looking at a duplex in Coombs or Wright, check the specific cap for that postcode before assuming the property qualifies.

You can also use the First Home Super Saver Scheme to release up to $50,000 in voluntary super contributions toward your deposit. This works alongside both the 5% Deposit Scheme and the ACT stamp duty exemption, and it's one of the few ways to build a deposit faster if you're earning a moderate income and want to avoid a gifted deposit.

When a Duplex Doesn't Qualify

Some duplexes are zoned or used as investment properties rather than owner-occupied dwellings, and that changes everything. If the duplex you're buying has been used as a rental and you intend to continue renting it out rather than living in it, you won't qualify for the stamp duty exemption, the 5% Deposit Scheme, or Help to Buy. You'll need to apply for an investment loan, which typically requires a larger deposit and attracts a higher interest rate.

If you're planning to live in one side of the duplex and rent out the other, some lenders will treat the purchase as owner-occupied, but others will classify it as an investment or apply a split structure. You'll need to declare your intention at the time of application, and the lender will assess serviceability based on the rental income you expect to receive, usually discounted by 20% to account for vacancy and maintenance.

What Happens at Settlement

Once your home loan application is approved and you've exchanged contracts, settlement usually occurs within six to eight weeks. For a duplex purchase, your solicitor or conveyancer will confirm title, ensure any strata or community title documentation is in order, and arrange for the transfer of funds. If you're using the 5% Deposit Scheme, the lender will arrange the Housing Australia guarantee at settlement, and you won't see a separate LMI premium on your loan statement.

If you've claimed the ACT stamp duty exemption, your conveyancer will lodge the exemption application with the ACT Revenue Office before settlement. You'll need to provide evidence that you meet the eligibility criteria, including a declaration that you haven't owned property in the last five years and that you intend to occupy the home within 12 months. The exemption is applied at settlement, so you won't need to pay duty upfront and claim a refund later.

Call one of our team or book an appointment at a time that works for you. We'll walk through your deposit options, confirm which schemes apply to the duplex you're looking at, and structure your application to match the way you plan to use the property.

Frequently Asked Questions