Guarantor Loans: Pros, Cons and Who Qualifies in Melbourne's First Home Market

On a frigid July morning in Coburg, two hopeful first-home buyers crouched over paperwork at a Bell Street broker’s office. Their ticket to a $750,000 two-bedroom unit: not a six-figure deposit, but their parents’ suburban home as loan security. In a year when the median Melbourne house price hovers at $920,000, guarantor loans are quietly reshaping how young Victorians get a foothold on the property ladder.

Why It Matters: A Changing Market

Melbourne’s auction clearance rates have dipped below 66% in recent weeks, with vendors in Camberwell and Glen Waverley increasingly turning to private sales. Forces behind this shift include interest rate hikes, flatlining wage growth, and a growing sense of urgency among first-home buyers shut out of the Bayside and inner-east enclaves. For many under-35s earning in the $70,000–$90,000 range, a 20% deposit—$184,000 on the metro median—is out of reach. Guarantor loans, offered by major banks including NAB and Westpac, enable buyers to borrow up to 105% of a property’s value, using a family member’s equity as collateral. The catch: the guarantor (most often parents or close relatives) must stump up real property—usually their principal place of residence in Melbourne suburbs like Doncaster or Brighton East.

Legal Aid Victoria and the Consumer Action Law Centre confirm a spike in inquiries related to both the risks and technical pitfalls, particularly when market values soften. For first-time purchasers looking at off-the-plan apartments along the Frankston corridor—where unit prices trended at $540,000 in June—these products offer a chance to sidestep lenders’ mortgage insurance and enter the market years sooner. But, as one mortgage advisor admitted outside a Collingwood cafe, "The guarantee can become a family minefield if repayments stall or property values fall."

The Evidence: Uptake and Risks

According to new data from the Australian Prudential Regulation Authority, nearly 8.7% of all new home loans in Victoria’s 2025 financial year relied on guarantor or similar support structures. Close to 3,600 Melbourne families used a parent or sibling as guarantor between July 2025 and June 2026. The most popular purchases were $650,000–$850,000 townhouses in suburbs like Ascot Vale and Ormond.

Yet the repayments on a $700,000 loan, at a typical fixed rate of 6.5%, still top $4,400 per month. The risks for the guarantor are sharp: if the borrower defaults, the lender can legally claim the guaranteed portion, forcing parents in suburbs like Box Hill to refinance or sell. Legal Aid warns that rising unemployment could see a wave of such cases. The State Revenue Office’s First Home Owner Grant currently excludes established properties in metropolitan Melbourne, putting extra pressure on younger buyers to lean on family wealth for newer builds or regional homes. Meanwhile, Domain’s quarterly report logged more than 2,130 first home loans settled using a parental guarantee so far this calendar year within the City of Melbourne and Maribyrnong boundaries alone.

Advocates point out that buyers using a guarantor are also ineligible for the Victorian Homebuyer Fund co-purchasing scheme, which requires a 5% deposit but provides the government as equity partner instead of family members. This technicality removes a safety net for those who might otherwise qualify. "Crossing the loan guarantee bridge is all-or-nothing," one broker summarised, "and it’s not always a happy ending."

What’s Next? Guarantor Loan Checklist

For Melbourne buyers weighing a guarantor loan, financial planners say diligence is key. First, both borrower and guarantor should have legal advice about liability, insurance cover and worst-case scenarios. It’s also possible to limit the guarantee to just the deposit portion, rather than the full amount—significantly reducing the parent’s exposure. Prospective borrowers can use the Victorian Government’s ‘Buying a Home’ pathway or seek pro bono support at Fitzroy Legal Service to stress-test their plan.

Banks typically require strong evidence of the guarantor’s income, property ownership, and clear title. Most will unwind the guarantee once the loan-to-value ratio drops below 80% through extra repayments or market growth. For those determined to buy in hotspots like Southbank or Moonee Ponds before values edge up, the option remains potent but higher-stakes than ever. Melbourne’s market may cool, but the family guarantee gamble—carefully managed—remains the fastest way onto the city’s property ladder for now.