Buying an investment unit in Sydney means understanding how lenders assess apartments differently from houses.
The loan structure you choose, the deposit you provide, and the type of property you select all shape your borrowing capacity and your ability to service the debt. Units come with body corporate fees, higher density considerations, and specific lending policies that don't always apply to freestanding homes. If you're planning to build wealth through property in greater Sydney, knowing how lenders view units makes the difference between a smooth approval and a declined application.
How Lenders Assess Investment Units Differently
Lenders apply stricter loan to value ratios for units compared to houses, particularly when the property sits in a high-density development or has more than three levels. Most lenders cap borrowing at 80% of the property value without Lenders Mortgage Insurance for units, and some won't lend above 90% even with LMI in place. If the building has more than 50% non-owner-occupied apartments, some lenders classify it as high-density and reduce the maximum loan amount further. Body corporate fees are factored into your servicing assessment, and if those fees sit above a certain threshold, typically around $8,000 per year, lenders reduce your borrowing capacity accordingly. Consider a buyer purchasing a two-bedroom unit in Parramatta with quarterly body corporate fees of $2,500. That's $10,000 annually, which reduces their borrowing capacity by roughly $50,000 to $60,000 depending on the lender's servicing buffer. The buyer needs to know this before they start looking, not after they've made an offer.
Deposit Requirements and Equity Release for Unit Purchases
Most investment loans for units require a minimum 10% deposit plus costs, though 20% is more common to avoid LMI and access better investor interest rates. If you're using equity from your home to fund the deposit, lenders will allow you to borrow up to 80% of your home's value in most cases, leaving 20% equity untouched. That means if your home is worth $900,000 and you owe $400,000, you can access up to $320,000 in usable equity, which covers a 20% deposit on a unit valued at $750,000 plus costs. Stamp duty in New South Wales varies by property price, and for an investment property there's no concession, so budget for around 4% to 5% of the purchase price to cover stamp duty and legal fees. Genuine savings aren't always required for investment purchases if you're using equity, but lenders still want to see that you can service both your home loan and the new investment loan without relying entirely on rental income.
Interest Only or Principal and Interest for Investment Units
Interest only repayments are commonly used for investment property loans because they reduce the monthly outgoing and improve cash flow, particularly if the property is negatively geared. On a loan amount of $600,000 at a variable interest rate of around 6.5%, interest only repayments sit at roughly $3,250 per month, while principal and interest repayments would be closer to $3,800. That $550 difference matters when you're covering a shortfall between rental income and loan costs. Interest only periods typically run for five years, after which the loan reverts to principal and interest unless you apply to extend the interest only term. Some lenders offer longer initial interest only periods for investment loans, but those options are becoming less common. Principal and interest from the outset makes sense if you want to build equity faster and reduce your loan balance over time, but it does mean higher repayments and a larger monthly shortfall if the property isn't generating enough rent to cover costs.
Variable Rate, Fixed Rate, or Split Rate Investment Loans
Variable rate investment loans give you flexibility to make extra repayments, access offset accounts, and refinance without break costs, but the interest rate moves with the market. Fixed rate loans lock in your repayments for a set period, usually between one and five years, which helps with budgeting but limits your ability to make extra repayments and removes access to offset accounts in most cases. A split rate structure lets you fix part of the loan and keep the rest variable, which balances certainty with flexibility. In our experience, investors who plan to hold the property long-term and want to chip away at the loan balance tend to prefer variable or split structures, while those focused purely on cash flow and tax deductions often choose interest only with a variable rate to maximise claimable expenses and maintain flexibility.
Tax Benefits and Claimable Expenses on Investment Units
Negative gearing benefits apply when your rental property costs more to hold than it earns, and you can claim that net loss as a deduction against your other income. For units, claimable expenses include loan interest, body corporate fees, council rates, water rates, property management fees, landlord insurance, and depreciation on the building and fixtures. Depreciation is particularly relevant for newer units, where you can claim the decline in value of the building structure and items like carpets, blinds, and appliances over time. A quantity surveyor prepares a depreciation schedule, which typically costs between $500 and $800, and that report outlines your annual depreciation deductions. If you purchased an established unit after 12 May 2026, the recent changes to negative gearing mean that from 1 July 2027, you can only offset rental losses against rental income or capital gains from residential property, not against your salary. Losses can still be carried forward, so they're not wasted, but the immediate tax benefit is reduced. New builds remain exempt from this change, so buyers purchasing off-the-plan or newly completed units can still claim losses against all income sources.
How Rental Income and Vacancy Rates Affect Borrowing Capacity
Lenders typically assess rental income at 80% of the stated market rent to account for vacancy periods and ongoing costs. If a unit in Castle Hill rents for $600 per week, the lender will use $480 per week in their servicing calculation. That's $24,960 per year instead of $31,200, which reduces your borrowing capacity unless you have strong personal income to support the shortfall. Vacancy rates in Sydney vary by area and property type, with units in oversupplied precincts sometimes sitting vacant for longer periods. Lenders look at the vacancy rate in the area when deciding whether to approve the loan, and if the vacancy rate sits above 5% or 6%, they may reduce the shaded rental income further or decline the application altogether. When you're purchasing an investment unit, understanding how lenders calculate rental income helps you set realistic expectations around loan amount and cash flow.
Refinancing Your Investment Loan for Portfolio Growth
Refinancing an investment property loan makes sense when you want to access equity for your next purchase, reduce your interest rate, or switch from principal and interest to interest only. If your investment unit has increased in value and you've paid down the loan, you can refinance to release equity and use that equity as a deposit on another property. Lenders will assess the new loan amount based on the current property value, your income, and your ability to service all existing debts plus the new borrowing. Rate discounts on investment loans vary between lenders, and some lenders offer better investor interest rates than others depending on your loan to value ratio and loan size. If you're holding multiple investment properties, consolidating your loans with one lender can sometimes unlock better pricing and streamline your portfolio management, though it's not always the right move if individual lenders offer stronger features or rates for specific properties.
Choosing the Right Investment Loan Product for Your Strategy
Investment loan products differ across lenders, and the right loan depends on whether you're focused on passive income, capital growth, or portfolio expansion. If you're planning to hold the unit long-term and want flexibility, a variable rate loan with an offset account and no extra repayment restrictions works well. If you're purchasing off-the-plan and want to lock in rates before settlement, a fixed rate loan with a long pre-settlement period might suit. Some lenders offer investment loan features like fee waivers, free valuations, or cashback offers, but those incentives should never outweigh the importance of a competitive ongoing interest rate and loan structure that aligns with your property investment strategy. SAT Home Loan works with a panel of lenders across Australia, which means you're not limited to one bank's policies or pricing when structuring your investment loan.
Call one of our team or book an appointment at a time that works for you. We'll walk through your property investment strategy, look at your borrowing capacity, and structure an investment loan that supports your long-term goals without overcomplicating the process.
