Buying your first home is exciting, but it can also come with a few expensive traps. Some of the biggest mistakes first home buyers make are skipping pre-approval, underestimating the true cost of buying, choosing a loan structure without understanding the features, or making offers before knowing what a lender may be willing to approve.
The good news is that most of these mistakes are avoidable. With the right preparation, a realistic budget, and support from a mortgage broker, you can compare options, understand your next steps, and avoid unnecessary delays.
Why preparation matters
A lender does not just look at the property price. They assess your income, expenses, debts, credit conduct, deposit, savings history and ability to manage repayments. APRA has confirmed that the mortgage serviceability buffer remains at 3 percentage points, which means lenders generally assess whether you could manage repayments above the actual loan rate.
That is why your borrowing power can be affected by things like credit card limits, buy now pay later use, personal loans, overtime income, casual income, self-employed income, and changes to your employment.
Common first home buyer mistakes
Looking before you know your budget
It is easy to start inspecting homes before speaking with a broker or lender. The risk is that you may fall in love with a property before knowing what you may be able to borrow.
A pre-approval can help you understand your possible price range, but it is still conditional. Final approval usually depends on the property, valuation, updated documents, lender checks and your financial position at the time.
Forgetting the extra buying costs
The purchase price is only one part of the cost. First home buyers may also need to budget for transfer duty, conveyancing, building and pest inspections, lender fees, government charges, insurance, moving costs and potential lenders mortgage insurance. MoneySmart also highlights the importance of comparing loan costs, features and fees before choosing a home loan.
Some buyers may be eligible for first home buyer concessions, grants or the Australian Government 5% Deposit Scheme, but eligibility depends on your circumstances, property type, price cap and location. The 5% Deposit Scheme allows eligible first home buyers to purchase with a minimum 5% deposit, and single parents or legal guardians with a minimum 2% deposit.
Choosing the wrong loan structure
Fixed, variable and split loans all work differently. A fixed rate can give repayment certainty for a set period, while a variable loan may offer more flexibility. A split loan combines both. MoneySmart notes that split loans allow part of the loan to be fixed and part to remain variable.
Features such as offset accounts and redraw facilities can be useful, but only if they suit how you manage money. MoneySmart explains that an offset account can reduce the loan balance used to calculate interest, while redraw access depends on the lender’s terms.
Making financial changes during the application
Changing jobs, taking on new debt, increasing credit card limits or missing repayments can all affect an application. Even small changes can trigger extra lender questions.
Before applying, it may help to keep your spending consistent, avoid unnecessary new credit, and make sure your bank statements, payslips, tax returns and identification are ready.
Relying on one lender only
Different lenders treat income, savings, overtime, casual work, self-employed income and credit history in different ways. A loan that is not suitable with one lender may be possible with another, depending on the policy.
This is where a broker can help. A broker can compare lender policies and loan options, explain the trade-offs, and help you prepare your application.
How a broker can help
A mortgage broker can help you:
- Check your borrowing power
- Compare loan options from multiple lenders
- Understand deposit requirements and possible first home buyer pathways
- Prepare your documents before submission
- Match your situation to lender policies
- Manage lender questions and application milestones
- Review fixed, variable and split loan options
- Understand features such as offset and redraw
- Plan for settlement timing with your conveyancer or solicitor
A broker cannot guarantee approval or promise a particular rate or outcome. Your full financial situation and requirements need to be assessed before any loan option is recommended.
First home buyer checklist
Before making an offer, it may help to:
- Check your borrowing power
- Review your deposit and savings history
- Estimate transfer duty and upfront costs
- Compare repayments at different interest rates
- Avoid applying for new credit
- Get your documents ready
- Speak with a broker about lender policy fit
- Confirm whether any first home buyer schemes may apply
- Allow enough time for finance approval and settlement
Final thoughts
Buying your first home is a big step, and the right preparation can make the process feel much more manageable. The key is to understand your numbers early, budget beyond the purchase price, compare loan options properly, and avoid making major financial changes while your application is being assessed.
A broker can help you understand your options, prepare a stronger application, and work through the process from pre-approval to settlement.
