Common Mistakes When Selecting Investment Property

Selecting Property Before Understanding Your Investment Loan Capacity

Your borrowing capacity determines which properties you can realistically acquire, not your deposit size. Lenders assess investment loans using a serviceability buffer that adds 3.0 percentage points to the loan product rate, and from February this year, they also apply a debt-to-income limit that restricts lending to borrowers with total debt six times their annual income or higher to just 20 per cent of their investor loan book each quarter.

Consider a Carnegie buyer earning $95,000 annually with no other debt. Under the DTI restriction, their maximum total borrowing sits at $570,000 before hitting the threshold that most lenders ration heavily. If they already hold a $400,000 owner-occupied mortgage, their investment loan ceiling drops to around $170,000, assuming they can service it under the buffer. That figures into a property value around $210,000 at 80 per cent LVR. Many Carnegie unit and townhouse options sit above that range, meaning the investor either needs to increase their deposit to lower the loan amount, consider a lower-priced suburb, or wait until they pay down existing debt.

We regularly see buyers in Carnegie who identify a property first and apply for finance second, only to find their income and existing commitments rule out the loan amount required. Running your serviceability and DTI position with a broker before you start searching saves time and frustration. Borrowing capacity assessments account for the rental income the property will generate, but lenders typically shade that income by 20 per cent to allow for vacancy and management costs, so the rent alone rarely covers the full loan repayment in the current rate environment.

Underestimating the Impact of Interest-Only Structures on Serviceability

Interest-only investment loans reduce your monthly repayment during the interest-only period, but they do not reduce the amount lenders use to assess your serviceability. Under APRA's Prudential Standard APS 220, lenders must assess your ability to service the loan on a principal and interest basis, even if you apply for interest-only terms. The assessment rate includes the 3.0 percentage point buffer, applied to a principal and interest repayment over the remaining loan term once the interest-only period ends.

An interest-only loan also attracts a higher risk weight under APS 112, which increases the capital cost to the lender and typically results in a higher interest rate for the borrower. For an investment property in Carnegie, the rate difference between interest-only and principal and interest can sit between 0.30 and 0.60 percentage points depending on the lender and your LVR. That margin affects both your holding cost and your serviceability, because lenders assess you at the higher product rate plus the buffer.

If your investment strategy relies on holding multiple properties over time, the cumulative serviceability impact of interest-only loans can restrict your ability to borrow again in the future. Some investors assume interest-only terms preserve capital for the next deposit, but the trade-off is a smaller borrowing envelope for subsequent purchases. Choosing principal and interest from the start improves your serviceability position and reduces your loan balance, which can be drawn on later if the property appreciates and you want to access equity.

Ignoring LVR Thresholds and Lenders Mortgage Insurance Costs

Most lenders charge a higher interest rate on investment loans where the LVR exceeds 80 per cent, even if you pay for lenders mortgage insurance. LMI itself is calculated on a sliding scale based on your loan amount and LVR, and it can add several thousand dollars to your upfront costs. The premium is not refundable if you refinance or sell early, and in some states, stamp duty applies to the LMI premium as well.

Under APS 112, lenders may reduce their capital requirement where the loan is covered by eligible LMI, but that benefit flows to the lender's balance sheet, not to your rate or serviceability. In practice, borrowing above 80 per cent LVR for an investment property often means you pay both a higher interest rate and a one-off insurance premium, which together erode your returns in the early years.

For Carnegie investors, the choice often comes down to waiting longer to accumulate a 20 per cent deposit or accepting the higher cost and moving sooner. If the property you are targeting is likely to appreciate quickly or if rental yields are strong enough to offset the additional interest and insurance cost, the higher LVR may still make sense. But if yields are marginal and capital growth is uncertain, the extra cost of LMI and the rate loading can push your investment into a deeper negative position in the first few years, which matters more now that negative gearing is limited to rental income for properties acquired after May last year, unless you purchased before that date or bought an eligible new build.

Overlooking Carnegie-Specific Holding Costs and Vacancy Risk

Carnegie's rental market includes a mix of older units near the station, renovated period homes closer to Koornang Road, and newer townhouse developments on the suburb's north side. Vacancy rates vary across those segments, and your holding costs depend heavily on property type and condition. Older walk-up units typically carry lower body corporate fees but may require more frequent maintenance and attract shorter tenancies. Newer developments often include higher quarterly levies, sometimes exceeding $1,200 per quarter for complexes with lifts, secure parking and shared facilities.

When calculating your investment loan repayments and serviceability, include body corporate fees, council rates, landlord insurance, property management fees (typically 6 to 8 per cent of rent plus letting fees), and an allowance for repairs. Carnegie's proximity to Caulfield Racecourse, Monash University's Caulfield campus, and the Frankston line makes it popular with students and young professionals, but those tenant groups also tend to move more frequently than families, which increases your turnover cost and vacancy risk.

Lenders shade rental income by 20 per cent in their serviceability assessment to account for vacancy and costs, but that does not mean you should budget for only 20 per cent vacancy in your own cash flow forecast. A more realistic assumption for a Carnegie unit leased to students or short-term tenants is four to six weeks of vacancy per year, plus letting fees and minor maintenance between tenancies. If your loan is structured on tight serviceability and you experience two vacancies in quick succession, you may need to cover the shortfall from other income, which is where the DTI limit and buffer assessment protect lenders but leave you exposed if your planning was optimistic.

Choosing Property Type Without Considering Future Lending Policy

The property you select today affects not only your current loan but also your ability to borrow again in the future. Lenders value properties differently depending on location, size, type and condition. Studio apartments, properties with no car space, and units in complexes with more than 50 per cent non-owner-occupier tenancy or incomplete building defect rectification may be classified as non-standard security, which restricts your borrowing capacity or excludes certain lenders altogether.

Carnegie has several older apartment blocks built in the 1960s and 1970s that do not meet current lending guidelines at some of the major banks. Before you commit to a property, check with a broker whether the property type and building will be accepted as security by a range of lenders, not just one. If only a handful of lenders will touch the property, your refinancing options narrow, and you lose negotiating power on rate discounts over time. Properties that meet the lending criteria of all major banks and most second-tier lenders give you flexibility to refinance when your circumstances change or when a lower rate becomes available elsewhere.

The location within Carnegie also matters for future lending. Properties within 400 metres of the station, close to Koornang Road retail, and in pockets with a higher proportion of detached homes tend to hold their value more reliably through market cycles, which keeps your LVR in check and makes it simpler to access equity later. Properties on busy roads, near industrial zones, or in areas with limited amenity may be harder to value and harder to finance in a softer market, even if the purchase price today looks attractive.

Failing to Account for Legislative Changes to Negative Gearing and CGT

Investment properties acquired after May last year are subject to new negative gearing rules from the current income year. Losses on those properties can only be offset against income from other residential properties, including capital gains on residential properties, not against your salary or other income. Excess losses carry forward to future years. Properties held before that date, properties under contract at that time, and eligible new builds remain fully deductible against all income.

For Carnegie investors purchasing established property now, this means your after-tax holding cost is higher than it would have been under the previous rules, because you cannot use the rental loss to reduce your PAYG withholding or your overall tax bill unless you also have other residential property income to offset it against. That changes the cash flow equation and makes positive or neutral gearing strategies more attractive than they were before the law changed.

Capital gains tax treatment has also changed. For gains accruing from July last year onward, the 50 per cent discount is replaced by cost base indexation and a 30 per cent minimum tax rate on real gains. If you sell a property years from now, you will calculate the gain in two parts: the portion up to July last year under the old rules, and the portion after that date under the new rules. Eligible new builds remain exempt and allow you to choose between the old discount and the new indexation method when you sell. The shift makes holding period and disposal timing more complex, and it reinforces the importance of selecting a property that you intend to hold long enough for capital growth to outweigh the additional tax and the higher after-tax holding cost during the ownership period.

Call one of our team or book an appointment at a time that works for you. We work with Carnegie investors to structure investment loans that match your property strategy, your income position, and your plans for portfolio growth over time.

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