What Are Investment Loans for Duplexes in Maylands?

A duplex purchase in Maylands requires investor finance that accounts for dual rental income, separate title or strata arrangements, and the specific borrowing structures lenders use for two-unit properties.

Maylands sits close to the Swan River and the city, with established streets near the Eighth Avenue precinct and newer infill developments closer to Whatley Crescent. Duplexes here often attract owner-occupiers on one side and tenants on the other, or two sets of tenants where the investor holds both titles. Lenders assess these properties differently depending on whether the duplex sits on a single title or two separate titles, and whether you plan to occupy one unit or rent both.

How Lenders Assess Duplex Properties for Investment Loans

Lenders treat a duplex on two separate titles as two distinct dwellings, which means you can use rental income from both units to support your borrowing capacity. Each unit is valued independently, and the combined valuation determines your deposit requirement. If the duplex sits on a single title with a strata plan, lenders assess it as a single security with dual rental income, and some apply a discount to the second income stream depending on their policy.

Consider a buyer looking at a duplex on two titles near the railway line. Each unit is valued at the suburb's current median for a two-bedroom residence. The buyer plans to rent both units at current rental yields for the area. The lender uses 80 per cent of the rental income from each unit in the serviceability calculation after applying the APRA buffer. Because the titles are separate, the lender does not discount the second income stream, and the buyer can access the full rental value in the assessment.

If the same duplex were on a single title with a strata arrangement, some lenders would apply a 20 to 30 per cent haircut to the second unit's rental income, reducing borrowing capacity even though the actual rental yield remains unchanged. Knowing which lenders accept full dual income on strata duplexes changes the amount you can borrow and the deposit you need.

Deposit Requirements and Loan to Value Ratios for Duplex Purchases

Most lenders cap investment loans at 90 per cent loan to value ratio, though many apply an 80 per cent cap for duplex properties depending on title structure and location. A duplex on two separate titles in Maylands will typically qualify for 90 per cent LVR with Lenders Mortgage Insurance, while a single-title strata duplex may be capped at 80 per cent with certain lenders.

If you purchase a duplex at 90 per cent LVR, you pay LMI on the portion of the loan above 80 per cent. This premium is calculated on the full loan amount and added to your borrowing or paid upfront. At 80 per cent LVR, you avoid LMI entirely, which reduces your upfront cost but requires a larger deposit.

Interest Only Versus Principal and Interest for Duplex Investment Loans

Interest only repayments lower your monthly outgoing and can improve cash flow when rental income does not cover the full loan cost. Most lenders offer interest only periods of one to five years on investment loans, after which the loan converts to principal and interest unless you negotiate an extension.

Principal and interest repayments reduce the loan balance each month, which builds equity faster and lowers the total interest paid over the loan term. If rental income exceeds your repayment amount, principal and interest can accelerate portfolio growth without affecting cash flow.

The choice depends on your cash position and whether you plan to hold the property long term or sell within a few years. Interest only suits buyers who want to maximise deductions and preserve capital for additional purchases. Principal and interest suits buyers focused on debt reduction and long-term hold strategies.

Variable Versus Fixed Rates for Duplex Investor Finance

Variable rates move with market conditions and give you the flexibility to make extra repayments or refinance without break costs. Fixed rates lock your repayment amount for a set period, usually one to five years, and protect you from rate rises during that time. Some lenders allow a split structure where part of the loan is variable and part is fixed.

In a scenario where a buyer fixes 50 per cent of the loan and leaves 50 per cent variable, they gain partial protection from rate increases while retaining the ability to make extra repayments on the variable portion. This structure works when you expect rates to rise but want to preserve flexibility for future changes or refinancing.

Fixed rates carry break costs if you repay early, sell the property, or refinance before the fixed term ends. These costs can run into thousands of dollars and should be factored into any decision to fix.

Negative Gearing and Tax Treatment from July 2027

Rental losses on residential investment properties acquired after 7:30pm AEST on 12 May 2026 will be quarantined from 1 July 2027 under the Treasury Laws Amendment (Tax Reform No. 1) Act 2026. Losses can only be offset against other residential rental income or carried forward for future use. They cannot be offset against salary or other income.

Duplexes classified as eligible new builds retain full negative gearing benefits. An eligible new build is a dwelling constructed on previously vacant land, or a development that increases the number of dwellings on a site. A knock-down rebuild that replaces one duplex with another does not qualify. If the new build is occupied for more than 12 months before being sold to you as an investor, it loses the exemption.

Properties held before the 12 May 2026 announcement, including those under contract at that time, are grandfathered and retain full negative gearing until sold. Buyers who settled between the announcement and 30 June 2027 can negatively gear until 30 June 2027 only.

If you purchase an established duplex in Maylands now and settle after 1 July 2027, your rental losses will be quarantined unless the property qualifies as a new build. This does not prevent you from claiming interest, rates, and other expenses. It only restricts where you can offset the resulting loss.

Body Corporate Fees and Rental Income Calculations

A duplex on a single title with a strata plan will have body corporate fees, which cover shared insurance, maintenance of common property, and administrative costs. These fees are deductible but reduce your net rental income. Lenders do not typically deduct body corporate fees when calculating rental income for serviceability, but they do affect your actual cash flow.

A duplex on two separate titles does not have body corporate fees unless both titles are part of a larger strata development. In that case, each title carries its own strata levy, and you pay two sets of fees.

When comparing properties, factor in ongoing costs alongside rental yield. A duplex with higher body corporate fees may still deliver stronger net income if rental demand supports higher weekly rents.

Borrowing Capacity and Debt to Income Limits for Duplex Investors

From 1 February 2026, lenders can allocate no more than 20 per cent of new investor loans to borrowers with a debt to income ratio of 6 times or greater. This cap applies at the lender level and is measured separately for investor and owner-occupier portfolios.

If you already hold investment property or have a large owner-occupied mortgage, your total debt relative to income may limit your ability to borrow at some lenders, even if rental income supports the repayment. Lenders calculate DTI using your total debt, including credit cards, personal loans, and existing mortgages, divided by your gross annual income.

Consider a buyer earning a combined household income in the range typical for dual-income Maylands households, with an existing owner-occupied loan and a car lease. Adding a duplex purchase pushes their DTI above 6. Some lenders will decline the application outright under the 20 per cent cap. Others will approve it if they have not yet reached their quarterly allocation. Applying early in the quarter or working with a broker who knows which lenders have capacity under the cap improves your approval odds.

Access to investment loan options from banks and lenders across Australia means you are not restricted to a single lender's interpretation of the DTI cap. A mortgage broker can place your application with a lender that has capacity and fits your duplex structure.

Rental Income Verification and Lease Requirements

Lenders require a signed lease or rental appraisal to verify rental income before settlement. If you purchase a tenanted duplex, the existing leases transfer to you at settlement, and the lender uses the current rent as evidence of income. If you purchase a vacant duplex, you need a rental appraisal from a licensed property manager showing the expected weekly rent for each unit.

Some lenders cap the rental income they will accept at 80 per cent of the appraised amount to account for vacancy and maintenance periods. Others use 100 per cent of the appraised rent if you can demonstrate demand in the suburb. Maylands has maintained low vacancy rates due to proximity to the city and the airport, which supports full rental income assumptions with most lenders.

Using Equity to Fund Your Duplex Deposit

If you own property with available equity, you can use that equity as your deposit and avoid selling other assets or drawing down savings. Lenders calculate usable equity as 80 per cent of the property's current value minus the outstanding loan balance. The equity is accessed by refinancing your existing property and increasing the loan amount.

This approach allows you to purchase the duplex without providing a cash deposit, though you still need to cover stamp duty and settlement costs unless you borrow those as well. Borrowing your full deposit and costs will push your LVR higher and trigger LMI on both the existing property and the new duplex if your combined borrowing exceeds 80 per cent of the total security value.

A refinance to release equity can be structured at the same time as the new investment loan, or completed beforehand to have funds available at settlement. Timing depends on how quickly you need access to the deposit and whether you want to lock in your borrowing capacity before making an offer.

Call one of our team or book an appointment at a time that works for you to discuss how your current equity, income, and deposit position align with duplex investment finance in Maylands.

Frequently Asked Questions