Olivia ThompsonMiki Hendler, the granddaughter of Meriton billionaire Harry Triguboff, and her husband Elliot Solomon have purchased a $20 million-plus five-bedroom mansion in Vaucluse, with the mortgage on the property funded by her parents Sharon and Gary Hendler, according to property reporting from Domain published in mid-2025 and updated through 2026. The 900-square-metre estate, sold for roughly $3 million above its guide price after a heated auction, sits a short walk from Harry Triguboff's almost 6000-square-metre Vaucluse compound and Hendler's parents' near-3000-square-metre property in the same eastern Sydney suburb.
The detail that has caught Australian readers' attention this week is not the headline price — eastern-suburbs trophy homes routinely change hands above $20 million in 2026. It is the financing structure. Both Hendler grandchildren now hold mortgages on their Sydney properties registered against their parents rather than a bank. For ordinary Australian first-home buyers locked out of the Sydney market, the story is a useful prompt to look hard at the "Bank of Mum and Dad" — the country's fifth-largest mortgage lender, by some 2025 estimates.
What Actually Happens in a Parent-Funded Mortgage
A parent-funded mortgage in Australia can take several legally distinct forms, and the choice has serious tax, estate-planning and family-relationship implications. The three most common structures in 2026 are:
- Family loan secured by a registered mortgage. The parents lend the money and register a first or second mortgage over the property at the relevant state land titles office. Interest is typically below market rate and a written loan agreement specifies repayment terms.
- Guarantor loan. A bank lends the buyer the purchase price; the parents' own home is used as additional security so the buyer avoids lenders' mortgage insurance. The parents do not transfer cash but assume liability if the borrower defaults.
- Outright gift. The parents simply transfer the deposit or purchase price with no expectation of repayment. Cleanest for the family, but the most expensive in lost opportunity cost and gift-tax implications in the parents' own estate plan.
The Hendler structure — a registered family mortgage — sits squarely in the first category, and it is the option a growing number of Australian families now adopt. The numbers are smaller for most households, but the legal questions are identical.
Why Documentation Matters Even When It Feels Awkward
The single most common failure mode in family lending is the absence of a written agreement. A verbal "we'll work it out" feels generous at the moment of the loan and becomes catastrophic five years later when a relationship breaks down, a parent dies intestate, or a sibling questions why one child received what looks like a gift.
A qualified solicitor will draft a loan agreement that records: the principal amount, any interest rate, repayment schedule, security arrangements, default consequences, and what happens to the loan on the death of either party. The Law Society of New South Wales lists qualified solicitors searchable by area of practice — family loans and estate planning are usually handled by the same firm.
Where the loan is secured by a registered mortgage, the cost of registration with NSW Land Registry Services is modest. The protection it provides is substantial: the parents' loan ranks ahead of any later unsecured creditor, and the security survives a subsequent relationship breakdown by the borrower.
Tax and Estate-Planning Consequences
The Australian Taxation Office treats genuine loans and gifts very differently. A loan creates no immediate income tax consequence for either party, but interest received by the parents must be declared as assessable income. A gift, by contrast, is generally not taxable to the recipient but reduces the giver's estate and may affect Centrelink age-pension eligibility through deeming and gifting rules.
The ATO's guidance on private financial arrangements is available at ato.gov.au and is the authoritative starting point. The crucial point is that the structure must be commercially recognisable as a loan if the parents claim it as one — anti-avoidance provisions can recharacterise a sham loan as a gift, with downstream estate-planning consequences.
For families with significant assets, the loan-versus-gift decision should be made alongside a complete review of the parents' will, any family trust deeds and superannuation death-benefit nominations. The interaction between these documents is technical, and inconsistencies routinely produce contested estates after the parents' deaths.
Family Equity Risk and Relationship Breakdown
The Family Court of Australia regularly hears matters where a child borrower has separated from a partner who claims an interest in the property funded by the in-laws' mortgage. Without a written loan agreement and registered mortgage, the parental contribution is at risk of being treated as a gift to the relationship — and thus divisible in the property settlement.
A registered mortgage held by the parents materially changes the analysis. The parents are a secured creditor, ranking ahead of any matrimonial property claim. Family-law specialists routinely recommend the registered-mortgage route precisely for this reason, even where the parents have no intention of ever calling on the security.
Binding financial agreements — sometimes informally called pre-nups — can supplement the structure where the relationship is new or the contribution is particularly large. The cost of legal advice on both sides of a binding financial agreement is significant but small relative to the assets involved.
When the "Bank of Mum and Dad" Becomes a Bank Issue
ASIC continues its broader review of mortgage broker conduct and best-interests duty in 2026. Where parents borrow against their own home to fund a child's purchase, the parents are themselves a mortgage customer, and the broker's obligations apply. Our recent coverage of the ASIC review of mortgage broker best-interests duty in 2026 sets out the regulatory backdrop for parents considering equity release on their own home.
The risk is real. Parents in their sixties and seventies who refinance the family home to fund a child's deposit are extending the term of their own mortgage into retirement, often without the income to service the increased repayments if their child's contribution stops. A licensed mortgage broker, retirement-income adviser or financial planner can model the scenario before any documents are signed.
What the Vaucluse Sale Means for Ordinary Buyers
The Hendler purchase will not change Sydney property dynamics. The eastern-suburbs trophy market operates on a different planet from the typical Australian first-home-buyer experience, and Triguboff family transactions have always sat at its centre.
The relevance is procedural. The structure the Hendler family chose — a registered family mortgage with clear documentation — is exactly the structure most Australian families fail to put in place when smaller sums change hands. The cost of doing it properly, for a $400,000 family loan, is a few thousand dollars in legal and registration fees. The cost of doing it wrong, measured in family disputes, tax recharacterisation, lost age-pension eligibility, or property-settlement exposure, can run to tens or hundreds of thousands.
For families considering a parental contribution to a 2026 home purchase, the order of operations is unchanged from a decade ago: speak with a solicitor before any money moves, get the tax position checked by an accountant, and only then talk to the bank or mortgage broker.
