Why This Decision Matters
Moving into a bigger home can solve real problems: an extra bedroom for a growing family, a dedicated home office, more storage, a larger backyard, or simply a layout that better suits the way your household lives. But upsizing isn’t just about qualifying for a larger home loan. The real question is whether the full cost will still feel comfortable long after you’ve unpacked.
Many buyers focus on the purchase price or monthly loan repayment, only to discover that the ongoing costs of owning a larger property add up quickly. Council rates, insurance, utilities, maintenance, and everyday running costs all become part of the picture.
Winter can be a practical time to inspect homes because cooler weather often highlights heating performance, insulation, drafts and natural light. But regardless of the season, a smart upsizing plan looks beyond the advertised price and asks: What will this home cost to buy, move into, maintain and comfortably live in for years to come?
Start With the Payment You’ll Actually Live With
A larger home usually means a larger mortgage, but your loan repayment is only one part of your monthly housing costs.
A realistic household budget should include:
- Home loan repayments
- Council rates
- Home and contents insurance
- Owners corporation (strata) levies, where applicable
- Utility bills
- Ongoing maintenance and repairs
Many lenders assess your borrowing capacity using interest-rate buffers, but your own budget should also leave room for life’s unexpected expenses.
It’s also worth remembering that interest rates can change over the life of a variable-rate loan. Even if repayments are comfortable today, it’s sensible to consider whether they’d still fit your budget if rates or household expenses increased.
If you’re buying an apartment, townhouse or property within a strata scheme, don’t overlook owners corporation fees. These regular levies contribute to maintaining common areas and shared facilities and can represent a significant ongoing expense.
Budget for Costs Before You Move In
The purchase price is only one part of the upfront cost of buying a home.
Depending on your circumstances, you’ll also need to budget for expenses such as:
- Deposit
- Conveyancing or solicitor fees
- Building and pest inspections
- Loan establishment or application fees (where applicable)
- Lenders Mortgage Insurance (LMI) if you’re borrowing above the relevant loan-to-value threshold
Many states offer concessions or exemptions for eligible first-home buyers, while transfer duty rates vary considerably across the country. Understanding these costs early can help avoid surprises before settlement.
Whether you’re relocating across town or country, moving costs can vary depending on the size of your household, access to the property, storage requirements and specialty items such as pianos or large furniture. Obtaining detailed written quotes and keeping a contingency fund can help cover unexpected expenses.
Plan for Higher Costs Once You Move In
A bigger home generally costs more to operate.
Heating and cooling are among the largest household energy expenses, and larger homes often require more energy to keep comfortable throughout winter and summer. More rooms, additional windows and larger living spaces usually translate into higher electricity or gas bills.
A larger garden can be a wonderful lifestyle upgrade, but it often brings additional costs for:
- Water
- Lawn care
- Garden maintenance
- Tree pruning
- Irrigation systems
Insurance costs may also increase. A larger home generally costs more to rebuild, and premiums can vary depending on location, construction type and exposure to risks such as bushfire, flood or severe storms.
Maintenance grows alongside the home itself. More bathrooms, additional flooring, a larger roof and extra outdoor structures all require regular upkeep. Setting aside money each year for maintenance helps prevent small issues becoming expensive repairs later.
Don’t Forget the Costs of Selling Your Current Home
Many upsizers are managing two properties during the transition: the one they’re buying and the one they’re selling.
Selling your current home comes with its own expenses, including:
- Real estate agent commission
- Marketing costs
- Conveyancing or legal fees
- Styling or presentation expenses
- Minor repairs before sale
If settlement dates don’t align perfectly, you may also face a temporary period where you’re paying two mortgages or covering both housing costs at once.
Some buyers use bridging finance to purchase their next home before selling their existing property. While this can provide flexibility, it’s important to understand the additional interest costs and lending requirements before committing.
A Simple Budget Test Before You Upsize
One of the easiest ways to assess affordability is to divide the decision into three categories:
Buy
- Deposit
- Conveyancing
- Building and pest inspections
- Loan costs
Move
- Packing supplies
- Storage
- Temporary accommodation if needed
- Essential repairs before moving in
Own
- Mortgage repayments
- Council rates
- Insurance
- Utilities
- Maintenance
Looking at the entire cost of ownership rather than just the mortgage provides a much clearer picture of long-term affordability.
Before committing, ask yourself a few practical questions:
- Would the budget still work if interest rates increased?
- Could you comfortably handle higher winter energy bills?
- Is there room for unexpected repairs?
- Can you maintain the property without putting pressure on other financial goals?
For homes of very different sizes or ages, an independent home energy assessment can also provide useful insight into likely running costs and opportunities to improve efficiency.
Clarity Beats Guesswork
Upsizing can be a rewarding long-term decision, whether you’re making room for a growing family, creating space to work from home, accommodating multiple generations or simply improving your everyday lifestyle.
However, the true cost rarely ends with the purchase price. It includes the ongoing mortgage, insurance, council rates, maintenance, utilities, moving expenses and the financial overlap that often comes with buying and selling at the same time.
Buyers who take the time to budget for the full picture aren’t being overly cautious—they’re giving themselves the best chance to enjoy the extra space with confidence, knowing the home fits both their lifestyle and their long-term finances.
The information provided in this blog is for general informational purposes only and is not intended as tax, legal, or financial advice. We are not tax professionals. Readers should consult their own tax advisor or accountant for guidance specific to their circumstances.