Guarantor Home Loans in WA — A Complete Guide for Buyers and Parents

A guarantor loan can get you into the market years earlier — often without your parents handing over a single dollar. But it puts part of their home on the line, and doing it properly means understanding exactly what's being guaranteed, what the risks genuinely are, and — just as importantly — how and when your parents actually get released.

What a guarantor loan actually is (and isn't)

A guarantor home loan lets a family member — almost always a parent — use the equity in their own property as additional security for your loan, instead of you needing a full deposit. It's important to be clear about what this does and doesn't involve:

• No cash changes hands. Your guarantor isn't lending or gifting you money — they're allowing the lender to register a charge over part of their property.

• It's not the whole loan. In almost all cases, lenders use a limited guarantee — more on this below — capping exactly how much of your parents' equity is actually at risk.

• It's temporary by design. A guarantor arrangement is meant to be released once your loan reaches a safe equity position, not to remain in place for the life of the loan.

Limited guarantee vs. the 80/20 structure

Here's the mechanic that matters most. Lenders typically want your loan to sit at 80% loan-to-value ratio (LVR) or below before they'll lend without Lenders Mortgage Insurance. If you don't have a 20% deposit, a guarantor can bridge exactly that gap — and only that gap.

A worked example: you're buying a $700,000 property with a 5% deposit ($35,000). Without help, your loan would be $665,000 — a 95% LVR, requiring LMI. With a limited guarantee, your parents' property secures the gap between your deposit and a safe 80% LVR — roughly $105,000 in this case (15% of the purchase price). The lender now has security across two properties covering the full amount, your loan proceeds without LMI, and critically, your parents' liability is capped at that $105,000 guarantee amount — not your entire $665,000 loan.

This is the single most important thing for parents to understand before agreeing: a limited guarantee means their exposure has a hard ceiling written into the loan documents, not open-ended liability for your whole mortgage.

How much equity does a guarantor actually need?

As a rule of thumb, your parents need enough usable equity to cover roughly 20% of your purchase price plus costs, while keeping their own property's overall debt at or below 80% of its value once the guarantee is added. Most lenders look for a minimum of $100,000–$150,000 in usable equity to support a limited guarantee, though this varies by lender and by the size of the gap being covered.

Your parents don't need to own their home outright — a property with an existing mortgage can still work, as long as there's sufficient equity above that mortgage. The lender will order a fresh valuation of their property as part of the application.

Servicing — whose income actually matters?

This is a common point of confusion. In a standard limited guarantee structure, you (the borrower) still need to service the loan on your own income — your parents' income isn't what gets assessed for your ability to make repayments. Their role is purely about security (the equity guarantee), not about proving you can afford the repayments. That said, lenders will still look closely at your guarantors' overall financial position, since the guaranteed amount is treated as a contingent liability if your parents apply for finance of their own down the track — something worth factoring in if they're planning to refinance or borrow again in the near future.

The real risks, stated plainly

• If you default and the lender needs to recover the shortfall, they can pursue the guaranteed amount against your parents' property, up to the capped limit. This is a real risk, not a formality — it's why independent legal advice for guarantors is mandatory under virtually every lender's policy, not just a suggestion.

• It affects your parents' own borrowing capacity while the guarantee is in place, even if nothing ever goes wrong with your loan — the contingent liability shows up in their serviceability calculations.

• Family relationships and money are already a sensitive mix. Beyond the legal and financial mechanics, it's worth having an honest conversation up front about what happens in scenarios like job loss, relationship breakdown, or a change in either party's circumstances.

Getting your parents released — the part everyone forgets to plan for

A guarantor arrangement isn't meant to last forever, and a good broker should be planning the exit from day one, not treating it as an afterthought. Guarantors can typically be released once your loan balance falls to 80% or below of the property's value — which happens through a combination of:

• Ordinary loan repayments reducing your balance over time

• Extra repayments made specifically to accelerate the release (often the single fastest lever available)

• Property value growth, which can bring your LVR down even without extra repayments — though this shouldn't be relied on as the primary plan, since growth isn't guaranteed on any given timeline

In practice, most guarantor releases happen somewhere between 3 and 7 years after settlement, depending on how aggressively the borrower pays down the loan and how the property market performs in the meantime. The release itself requires a fresh valuation and a formal application to the lender — it isn't automatic just because you've crossed 80% on paper, so this is a conversation to actively initiate with your broker once you're getting close, rather than assuming it happens by itself.

Practical tip: if getting your parents released quickly matters to your family, structure the loan and repayment plan around that goal explicitly from day one — for example, directing any spare cash flow toward extra repayments rather than other goals until the release is achieved.

Combining a guarantor with other WA first home buyer support

One important thing to get right: a guarantor arrangement cannot be combined with Keystart or the Australian Government 5% Deposit Scheme — both of those are standalone low-deposit pathways in their own right, and neither is set up to also accommodate a family guarantee on top. If you're going down the guarantor route, it's typically structured through a standard lender instead. A guarantor arrangement can, however, still be combined with WA stamp duty concessions and the First Home Owner Grant, since those are assessed independently of how your deposit and security are structured. Which combination actually makes sense depends on your income, your parents' equity position, and the specific property — worth mapping out properly before you start house-hunting, since the guarantor pathway and the government low-deposit schemes are genuine alternatives to weigh against each other, not pieces to stack together.

Considering a guarantor arrangement with your parents?

This article is general information only and does not take into account your personal financial situation, needs, or objectives. It is not financial or legal advice. Guarantor loan structures, equity requirements, and release policies vary between lenders and are subject to change — always confirm current lender policy before proceeding. Guarantors should obtain independent legal advice before entering into any guarantee arrangement. Please seek independent financial and legal advice before making decisions about your home loan. Ian Freeman is a Credit Representative (Credit Representative Number 439731) of Finsure Finance & Insurance Pty Ltd, Australian Credit Licence 384704.