Smart ways to approach buying a larger family home

Borrowing capacity shifts when your family does

Your borrowing capacity for a larger home depends on your current equity, income, and serviceability under APRA lending rules. Lenders assess new borrowers' capacity to service a home loan at an interest rate that is at least 3.0 percentage points above the loan product rate. For Queensland public sector employees, stable employment and predictable income often support stronger serviceability, though the buffer still applies in full. The difference between what you can borrow and what you should borrow depends on how much buffer you need for rate rises, school fees, and childcare.

Consider a family moving from a three-bedroom unit in Chermside to a four-bedroom house in Everton Park. They have $180,000 equity in their current property and a combined household income of $165,000. After selling, they have around $200,000 for a deposit on a property priced at the suburb median. The lender assesses serviceability at the variable rate plus 3.0 percentage points, which reduces their maximum borrowing capacity by roughly $150,000 compared to a scenario without the buffer. They structure the loan with 20 per cent down to avoid LMI, leaving some equity in reserve rather than stretching to the upper limit of what the lender will approve. That choice keeps repayments within a range they can manage if one parent reduces hours or rates rise further.

Using equity without selling first

If you want to secure a larger home before selling your current property, bridging loans for public servants let you access equity without waiting for settlement. Bridging finance covers the deposit and sometimes a portion of the purchase price for the new property, with the loan discharged once your existing home sells. Interest is typically capitalised during the bridging period, which usually runs between three and six months. Lenders assess your capacity to service both loans simultaneously during the overlap, so income stability and a clear sale timeline matter.

In our experience, families who use bridging finance often do so to avoid renting between properties or to secure a home in a school catchment before the start of term. The cost of bridging interest and any extension fees if the sale takes longer than expected needs to be weighed against the benefit of timing. Some lenders offer bridging at variable rates with no ongoing fees, while others charge a premium. It pays to compare whether bridging suits your situation or whether a longer settlement on the purchase gives you enough time to sell without needing interim finance.

Split rate structures that suit growing households

A split loan divides your borrowing between fixed and variable portions, letting you lock in part of your repayment while keeping access to offset and redraw on the variable portion. For families upsizing, a common structure is 50 to 70 per cent variable with a linked offset account, and the remainder fixed for two to four years. The fixed portion provides repayment certainty during the years when childcare or school costs are highest, while the variable portion lets you park savings and reduce interest without restriction.

Variable portions typically support unlimited additional repayments and full offset, meaning every dollar in your offset account reduces the interest charged on the loan balance. If you receive a performance bonus, regular overtime, or rental income from your previous property, those funds can sit in offset and reduce interest daily. Fixed portions do not usually allow full offset and may cap additional repayments at $10,000 to $30,000 per year depending on the lender. Going over the cap triggers break costs, calculated based on the difference between your fixed rate and the lender's current wholesale cost of funds for the remaining fixed period.

Portable loans and how they work when you move

Some lenders offer portable loan features that let you transfer your existing loan to a new property without discharging and reapplying. Portability can save on discharge fees, application fees, and valuation costs, and may let you keep your current interest rate if it is lower than current market rates. Not all loan products are portable, and conditions vary. Most portable loans require you to notify the lender before settlement, provide a valuation of the new property, and meet serviceability for any additional borrowing.

Portability works cleanly when you are upsizing by a modest amount and the new property value sits comfortably within your borrowing capacity. If you need to borrow significantly more, the additional amount is usually assessed as a new loan at current rates, which can reduce the advantage. Some lenders also require the sale and purchase to settle on the same day or within a short window, which may not suit every transaction. For Queensland public sector employees moving within the same region, portability can be useful, but it is worth comparing whether a new loan with a lower rate or waived LMI offers more value overall.

LMI waivers and low deposit options for public sector employees

Some lenders waive LMI for public sector employees borrowing up to 90 or 95 per cent of the property value, depending on your employer and the loan amount. LMI waivers are not universal across all lenders, and eligibility criteria differ. Where a waiver applies, it can save several thousand dollars and let you upsize without needing a full 20 per cent deposit. This can be useful if most of your equity is tied up in your current property and you want to avoid bridging finance.

For context, LMI on a loan of $600,000 at 90 per cent LVR typically costs between $15,000 and $20,000, depending on the insurer and lender. A waiver removes that cost entirely. If you are accessing the Australian Government 5% Deposit Scheme, you may be able to borrow with a 5 per cent deposit and a government guarantee covering the gap to 20 per cent, avoiding LMI through the scheme rather than through an employer-based waiver. The scheme applies to first home buyers only, so if you are upsizing it will not be available unless you meet the eligibility criteria, which generally require you not to have owned property in Australia in the last 12 months.

Fixed rate break costs and when they apply

If you are selling a property with a fixed rate loan and settling before the fixed term ends, you may be charged break costs by your lender. Break costs are calculated based on the difference between your fixed rate and the lender's current wholesale cost of funds for the remaining fixed period. Break costs apply when rates have fallen since you fixed, because the lender loses the higher interest income they expected to earn. If rates have risen since you fixed, break costs are usually nil or minimal.

Break costs can range from a few hundred dollars to tens of thousands, depending on the loan size, the remaining fixed term, and how much rates have moved. Most lenders provide a break cost estimate on request, and it is worth obtaining that estimate before committing to a sale contract. Some lenders allow you to port a fixed rate loan to a new property, which avoids break costs, though this depends on the loan product and the lender's terms. If break costs are high, it may be worth delaying the sale until closer to the end of the fixed term, or negotiating a longer settlement to reduce the remaining fixed period.

Offset strategies for families with irregular income

An offset account linked to your variable loan balance reduces the interest charged each day based on the offset balance. For public sector employees with stable fortnightly pay, an offset account also lets you manage irregular income such as bonuses, overtime, or rent from a property you have kept as an investment. Instead of making lump sum repayments that may be hard to access later, you hold surplus funds in offset where they reduce interest but remain fully accessible.

As an example, a family with a $500,000 variable loan at current rates and $30,000 in their offset account saves roughly $1,200 to $1,500 in interest per year compared to holding that money in a standard savings account. If you receive rental income from your previous property after upsizing, those funds can be directed into offset each month, reducing interest on your owner-occupied loan while keeping the cash available for maintenance or vacancy periods on the investment property. Some lenders charge monthly fees for offset accounts, while others include offset at no additional cost. The value of offset depends on your loan balance and how much you can hold in the account consistently.

Reviewing your loan structure after you settle

Once you have moved into your larger home, it is worth reviewing your loan structure within the first six to twelve months. Rate discounts, offset features, and loan terms that suited your previous property may not suit your new borrowing level or repayment capacity. A loan health check compares your current loan against other products available to public sector employees, including any LMI waivers, rate discounts, or offset features you may not have access to under your existing loan.

Lenders periodically offer lower rates to new customers than to existing borrowers, and refinancing can reduce your rate by 0.20 to 0.50 percentage points or more. On a $600,000 loan, a 0.30 percentage point reduction saves roughly $1,800 per year in interest. Refinancing does involve application and valuation costs, and sometimes discharge fees from your current lender, so the saving needs to outweigh the cost over the period you plan to hold the loan. If your circumstances have changed since you first borrowed, such as an increase in household income or a reduction in other debts, your borrowing capacity may also have improved, which can support better loan terms.

Call one of our team or book an appointment at a time that works for you. We work with Queensland public sector employees across state government departments, health, education, and emergency services, and we understand how stable employment and salary structures support borrowing capacity when you are ready to upsize.

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