The media paints a grim picture for Generation Z when it comes to homeownership. High interest rates, soaring property prices, and strict bank criteria seem to suggest that buying a home in your mid-20s—especially as a single person—is impossible without a massive inheritance.
At Finch Mortgage, we strongly disagree. While it requires strict financial discipline and strategic structuring, single, young buyers get approved for mortgages every week.
In this detailed case study, we break down exactly how Liam, a 25-year-old marketing professional, bought his first home in Auckland with no parental guarantee and a deposit of just over 10%.
The Client Profile
- Name: Liam (Name changed for privacy)
- Age: 25
- Status: Single
- Income: $82,000 base salary + $5,000 annual bonus
- Debt: $3,000 on a credit card, $12,000 student loan
- Goal: Purchase a 2-bedroom townhouse in West Auckland
1. Gathering the Deposit
Liam had been working full-time since he was 21 and had been diligently contributing to KiwiSaver at a rate of 8%. He had also been funneling a portion of his weekly pay into a high-interest savings account.
Here is how his deposit was built:
- KiwiSaver Withdrawal: $42,000
- Cash Savings: $26,000
- First Home Grant: $10,000 (Because he was targeting a new build, he was eligible for the maximum grant).
- Total Deposit: $78,000
Liam found a brand new 2-bedroom townhouse in Henderson priced at $690,000. His $78,000 deposit equated to roughly 11.3%. Because it was a new build, the Reserve Bank's LVR rules allowed main banks to lend up to 90% (requiring only a 10% deposit). The property ticked the deposit box.
2. The Hurdle: Single Income Servicing
While the deposit was sufficient, the real challenge for single buyers is "servicing"—the bank's assessment of whether you can afford the monthly repayments.
Liam required a loan of $612,000. At an assessment rate of 8.50%, the banks calculated the theoretical monthly repayment at over $4,700. On a pre-tax salary of $82,000, Liam's net monthly income after tax and student loan deductions was only around $4,800. The math simply did not work. According to the bank’s calculator, he could not afford to eat after paying the theoretical mortgage.
If Liam had gone directly to a bank branch, he would have been instantly declined.
3. The Broker Strategy: Boarder Income & Debt Clearing
When Liam came to Finch Mortgage, we implemented a two-part strategy to fix his servicing deficit.
Step A: The Credit Card
The $3,000 credit card had a limit of $5,000. Banks assess the limit, not the balance. A $5,000 limit reduces borrowing power by roughly $25,000. We advised Liam to take $3,000 from his cash savings, pay off the credit card entirely, and permanently close the facility. This dropped his deposit slightly to $75,000 (10.8%), but the massive boost to his monthly servicing capacity was well worth the trade-off.
Step B: Boarder Income
This is the secret weapon for single buyers. Because Liam was buying a 2-bedroom property, he planned to rent out the second bedroom to a flatmate. Most main banks will accept "boarder income" as part of your application, provided you have a spare room.
Depending on the bank, they will add between $150 to $250 per week of untaxed income to your application. We presented a proposal to the bank outlining that Liam would charge $220 per week for the second bedroom. This added over $11,000 of untaxed annual income to his application, radically transforming his UMI (Uncommitted Monthly Income).
4. The Result: Approval and Keys
With the credit card closed and the boarder income factored into the equation, the servicing calculation flipped from a severe deficit to a comfortable surplus.
We submitted the application to a major Tier 1 bank that specifically favors new build properties and has generous boarder income policies. The loan was approved within 48 hours.
Because he was borrowing over 80% (low equity), Liam incurred a Low Equity Margin (LEM) on his interest rate. We fixed his mortgage for 1 year at a slightly elevated rate. His plan is to aggressively pay down the principal and rely on capital growth over the next two years. Once he reaches 20% equity, we will renegotiate his rate to remove the premium.
Key Takeaways for Young Buyers
- Boost Your KiwiSaver: Liam’s decision to contribute 8% instead of the minimum 3% was the primary reason his deposit was large enough.
- Target New Builds: Buying a new build requires a much smaller deposit (often 10%) compared to an existing home (20%), and unlocks double the First Home Grant.
- Use Spare Rooms: If you are single, buying a property with an extra bedroom allows you to use boarder income to satisfy the bank’s strict affordability tests.
- Use a Broker: If Liam had walked into his local bank branch, he would have been declined. Proper structuring is the difference between renting for another 5 years and owning your own home today.