Beginner's Guide to Upgrading Your Family Home

Upgrading to a larger family home usually means borrowing more while your current property still carries debt.

Most families in Burwood looking to upgrade face a similar set of decisions: whether to sell first or buy first, how much equity they can actually use, and which loan structure lets them move without overcommitting. The property you already own becomes the deposit for the next one, but only if your income can service both loans during the transition.

How Much Can You Borrow When You Already Own Property?

Your borrowing capacity depends on your income, existing debts, and how much equity sits in your current home. Lenders assess serviceability by applying a buffer of at least 3.0 percentage points above the actual loan product rate, so even if you're paying a lower rate now, the bank tests whether you could afford repayments at a higher rate. If your household income is $180,000 and you're carrying $450,000 in existing home debt, a lender will calculate how much additional debt you can service after accounting for that liability and all other commitments including credit cards, car loans and living expenses.

Equity is the difference between what your home is worth and what you owe. If your Burwood property is valued at $1,200,000 and your loan balance is $600,000, you hold $600,000 in equity. Most lenders will allow you to borrow up to 80 per cent of the property's value without requiring Lenders Mortgage Insurance, which means you can access around $960,000 in total lending against that property. Deduct the existing $600,000 debt and you have roughly $360,000 available to use as a deposit on your next home. That calculation shifts if you're willing to pay LMI, which would let you borrow beyond 80 per cent, or if you have access to no LMI loan products offered to certain professions.

Should You Sell First or Buy First?

Selling first gives you certainty over your deposit and removes the risk of holding two properties if the sale takes longer than expected. Buying first lets you secure the home you want without rushing, but requires enough serviceability to carry both mortgages during the overlap and enough equity to fund the deposit and costs on the new property before the sale settles.

Consider a family living in a three-bedroom home in Burwood who want to move to a four-bedroom property closer to Burwood Village. They have $400,000 in usable equity and a combined income that can service an additional loan of up to $900,000. If they find the right property and exchange contracts with a 60-day settlement, they can use their equity to fund the deposit and cover stamp duty, then sell their existing home within that period to repay the original loan before the new purchase settles. That approach works only if the sale completes in time and at a price that covers the debt. If it doesn't, they either need a bridging loan to cover the shortfall or they risk settlement default.

Buying first also exposes you to holding costs on the new property if your existing home takes longer to sell than anticipated. Lenders will assess whether you can service both loans simultaneously, and if your income doesn't support that scenario, you won't be approved to purchase before selling.

Fixed, Variable or Split Rate When Upgrading?

A split loan lets you lock part of your borrowing at a fixed rate and keep the rest on a variable rate. That structure suits families upgrading who want repayment certainty on the bulk of their debt but still need flexibility to make lump sum repayments from the sale of their previous home without incurring break costs.

If you're moving from a $600,000 loan to a $1,200,000 loan and your existing property will sell within six months, you might fix $800,000 for three years and leave $400,000 on a variable rate. When the sale settles, you repay the variable portion without penalty and keep the fixed portion running. Break costs on a fixed loan can run into tens of thousands of dollars if rates have fallen since you locked in, so keeping part of the loan variable gives you room to adjust without triggering that cost. An offset account linked to the variable portion also lets you park sale proceeds and reduce interest while you decide how much to pay down.

Timing Settlement and Bridging Finance

When you buy before selling, timing becomes critical. Most purchase contracts in Victoria allow 30, 60 or 90 days to settlement. If your sale doesn't complete before your purchase settles, you'll need bridging finance to cover the gap. A bridging loan is a short-term facility secured against your existing property that provides the funds to settle the new purchase while you wait for the sale to finalise. Interest accrues daily and is typically capitalised, meaning it's added to the loan balance rather than paid monthly.

Bridging finance works when the equity in your current home is sufficient to support both loans and your income can service the combined debt, even if only temporarily. Lenders will assess end debt, which is the total amount you'll owe once the bridging loan is repaid from your sale proceeds. If your sale falls through or settles below the expected price, you may not have enough to discharge the bridging facility, which can leave you in a position where you're forced to refinance or sell under pressure.

In Burwood, where demand for family homes near schools like Burwood Heights Primary and Our Lady of Lourdes remains steady, most properties that are priced appropriately will sell within a reasonable timeframe. That doesn't eliminate the risk, but it does reduce it compared to areas with longer days on market.

Investment Loan vs Owner-Occupied Loan for Your Current Property

If you're keeping your current home as an investment property after upgrading, the loan structure changes. Owner-occupied loans carry lower interest rates than investment loans, and you'll need to notify your lender when the property is no longer your primary residence. Some lenders will automatically convert the loan to an investment rate once they're notified. Others may require a formal variation or refinance.

The interest on an investment loan is tax-deductible, which offsets part of the rate difference, but rental income also gets added to your serviceability assessment. That can help or hinder your application depending on whether the rent covers the loan repayments and how much of the income the lender will recognise. Most lenders apply a shading factor of 80 per cent to rental income to account for vacancy and maintenance costs. If your Burwood property rents for $750 per week, the lender will assess $600 per week as usable income. If the loan repayments exceed that figure, the shortfall reduces your borrowing capacity for the new home.

Keeping your existing property also means you're subject to loan to value ratio considerations across both securities. If your total lending across both properties exceeds 80 per cent of their combined value, you may be required to pay LMI on the new loan even if each individual property sits below that threshold. Some lenders assess each security separately. Others assess the portfolio as a whole. That difference matters when you're trying to avoid LMI on a large upgrade.

How Stamp Duty and Costs Affect Your Deposit

Stamp duty in Victoria is calculated on the purchase price and is due at settlement. For an established home valued at $1,400,000, stamp duty is roughly $78,000. You also need to budget for settlement costs including conveyancing, building and pest inspections, loan establishment fees and any early discharge fees on your existing loan if you're refinancing. Together, those costs can add another $5,000 to $10,000 depending on the complexity of the transaction.

If you're using $400,000 in equity as your deposit, around $80,000 of that will go toward stamp duty and costs, leaving $320,000 available as the actual deposit. On a $1,400,000 purchase, that represents a deposit of just under 23 per cent, meaning you'll need to borrow roughly $1,080,000. If your income supports that loan amount and your equity position is sufficient, the transaction proceeds. If not, you either need to increase your deposit by accessing more equity, reduce the purchase price, or improve your serviceability by reducing other debts before applying.

Stamp duty concessions do not apply to upgraders in Victoria unless you're a first home buyer, which most families moving to a larger property are not. That cost is unavoidable and needs to be funded upfront, either from savings, equity or a combination of both.

Pre-Approval Before You Start Looking

Home loan pre-approval confirms how much you can borrow and gives you confidence to make an offer when the right property appears. Pre-approval is not a guarantee, but it is a formal assessment based on your income, debts, expenses and the equity available in your current property. Most pre-approvals are valid for three to six months and are subject to a satisfactory valuation of both the property you're buying and the property you're using as security.

Pre-approval also identifies any issues with your serviceability or credit file before you start attending auctions. If your borrowing capacity is lower than expected, you have time to adjust your budget, pay down debts or wait until your income increases. If you're planning to keep your current home as an investment, pre-approval will factor in the rental income and the ongoing loan repayments, giving you a clear picture of what you can afford on the new property.

Call one of our team or book an appointment at a time that works for you. We'll assess your equity position, confirm your borrowing capacity, and structure a loan that lets you upgrade without unnecessary cost or risk.

Frequently Asked Questions