Guarantor Home Loans in Perth: Family Security, Liability, Alternatives and Release

A guarantor home loan may help some eligible buyers in Perth purchase a property sooner by allowing a family member—commonly a parent—to use part of the equity in their own property as additional security. However, becoming a guarantor is a serious financial commitment. Both the borrower and the guarantor must understand the structure, obligations and risks before proceeding.

This guide explains how guarantor home loans work, who may be eligible, what lenders assess, and what families should consider before entering this type of arrangement. It is written by Mary Nebotakis, Managing Director of Natloans, B. Eco, Dip. Financial Services.

General information only. This article does not constitute personal financial or legal advice or credit approval. Guarantors should obtain independent legal advice and consider seeking independent financial advice. Lending criteria, fees, terms and conditions apply and vary between lenders.

What Is a Guarantor Home Loan?

A guarantor home loan is a mortgage supported by a guarantee from another person. The guarantor generally provides part of the equity in their property as additional security for the borrower's home loan. The guarantor does not usually provide the entire purchase price or make the regular repayments—unless the borrower cannot meet their obligations.

Depending on the lender and structure, the guarantee may be limited to an agreed amount rather than covering the entire home loan.

The guarantee can potentially help an eligible buyer:

The borrower must still meet the lender's income, expense, credit and borrowing-capacity requirements. A guarantor arrangement cannot make an unaffordable loan affordable.

Who Can Be a Guarantor?

Parents are the most common guarantors, but some lenders may consider other close family members. The available options depend entirely on the lender's policy.

A proposed guarantor will usually need sufficient equity in an acceptable property and must demonstrate that they understand and can manage the financial commitment. The lender may assess the guarantor's:

Many lenders require guarantors to obtain independent legal advice before accepting the guarantee. Independent financial advice may also be appropriate.

Can Retired Parents Become Guarantors?

Potentially, but the lender will consider their income, assets, liabilities, age, retirement plans and ability to meet the guarantee. Policies vary considerably between lenders. Confirm specific eligibility with Natloans or the relevant lender.

How Does a Family Guarantee Work?

A family guarantee can provide additional security where the borrower’s deposit is insufficient. A lender may hold mortgages over both the purchased property and the guarantor’s property. A limited dollar guarantee does not mean only a physically separate portion of the guarantor’s home is exposed; if the guarantor cannot meet an enforceable obligation, that secured property may be at risk.

The guarantee may be calculated to reduce the lender's effective exposure to an acceptable percentage of the purchase price. The exact amount depends on the buyer's deposit, purchasing costs, property value and lender policy.

The buyer remains responsible for repayments, while the guarantee creates obligations and may affect the guarantor’s finances from the time it is given. If the borrower defaults, enforcement depends on the guarantee terms and applicable law. The source’s statement that a guarantee only becomes relevant after the lender experiences a recovery shortfall is too absolute: do not assume the lender must always finish selling the borrower’s property before any guarantor liability or action can arise. Obtain independent legal advice on the actual documents and enforcement process.

Does a Guarantor Replace the Need for a Deposit?

Not always. As stated in Natloans' article (published 14 September 2026), some lenders may consider guarantor applications with a small deposit, while others still expect the buyer to demonstrate genuine savings or contribute toward purchasing costs.

Buyers also need to budget for expenses that may include:

Eligibility for any first-home-buyer concession, grant or government initiative is separate from qualifying for a guarantor loan and should be checked against current criteria.

Source: Natloans, published 14 September 2026

Can a Guarantor Help Avoid Lenders Mortgage Insurance?

A family guarantee may potentially reduce or avoid lenders mortgage insurance when the structure provides sufficient additional security. Lenders mortgage insurance generally protects the lender—not the borrower or guarantor—if the borrower defaults and the property sale does not recover the outstanding debt.

Avoiding this cost can be valuable, but it should not be the only consideration. The risks accepted by the guarantor may be significantly greater than the cost of lenders mortgage insurance. The complete arrangement should therefore be considered carefully.

How Much Does the Guarantor Guarantee?

The guarantee does not necessarily need to cover the entire home loan. A limited guarantee may restrict the guarantor's obligation to a nominated amount, potentially including associated interest, fees and enforcement costs. The amount may be based on the difference between the buyer's contribution and the security level required by the lender.

The guarantee documents should clearly explain:

Document Element What to Confirm
Guaranteed amount The specific dollar figure or percentage being guaranteed
Guarantee type Whether the guarantee is limited or unlimited
Security property Which property is being provided as security
Trigger conditions When the lender can rely on the guarantee
Release conditions How and when the guarantee may be released
Default obligations The guarantor's obligations if the borrower defaults

Both parties should obtain appropriate professional advice before signing any guarantee documents.

What Are the Risks for the Guarantor?

A guarantor accepts genuine financial and legal risk. If the borrower cannot repay the loan, the lender may require the guarantor to meet their obligations under the guarantee. If the guarantor cannot pay, the asset used as security—including their home—may be at risk.

The guarantee may also affect the guarantor's ability to borrow for their own purposes because lenders can take existing guarantees into account when assessing future applications.

Potential risks include:

Government financial guidance recommends treating a guarantee as seriously as taking out the loan yourself. No family member should feel pressured to become a guarantor.

What Will the Lender Assess?

The lender will assess both the borrower and the proposed guarantor independently.

Borrower Assessment Guarantor Assessment
Income and employment Available property equity
Living expenses Existing debts
Existing loans and credit limits Income and expenses
Credit history Credit history
Available savings Age and financial plans
The proposed property Capacity to meet the guaranteed amount
Ability to meet repayments Independent legal advice obtained

A guarantor arrangement cannot make an unaffordable loan affordable. The buyer must still demonstrate capacity to manage the ongoing mortgage repayments.

How Is a Guarantor Released?

A guarantee does not always remain in place for the entire home loan term. The borrower may request its release after reducing the loan balance, building equity or demonstrating an acceptable repayment history. An increase in the property's value may also help, although a lender may require a new valuation.

The release process may involve:

Release is subject to lender approval and may involve fees. It should never be assumed to occur automatically.

Are There Alternatives to a Guarantor Loan?

A guarantor arrangement is only one way to approach a home purchase. Families should compare the alternatives rather than assuming a guarantee is the only way forward.

Alternatives may include:

Each option has different financial and legal implications that should be assessed individually.

How a Perth Mortgage Broker Can Help

Guarantor policies vary significantly between lenders. An experienced broker can help the family understand which lenders may consider the proposed arrangement and what supporting information will be required.

Mortgage Broker Perth by Natloans can help you:

Clients can complete much of the process by phone, video conference and secure electronic document transfer, with face-to-face appointments available by arrangement. Natloans assists buyers and families across the Perth metropolitan area and throughout Western Australia.

Frequently Asked Questions

Do guarantors need to make the regular repayments?

The borrower is responsible for making repayments. The guarantor may become liable if the borrower does not meet the loan obligations and the lender relies on the guarantee.

Does a guarantor replace the need for a deposit?

Not always. Some lenders may consider guarantor applications with a small deposit, while others still expect the buyer to demonstrate genuine savings or contribute toward purchasing costs. Buyers also need to budget for stamp duty (where applicable), conveyancing and settlement costs, inspections, loan and valuation fees, moving expenses, insurance and an emergency financial buffer. Eligibility for any first-home-buyer concession, grant or government initiative is separate from qualifying for a guarantor loan and should be checked against current criteria.
Source: Natloans, published 14 September 2026

Can a guarantor use an investment property?

Some lenders may accept an eligible investment property as security, subject to their policies and assessment.
Source: Natloans, published 14 September 2026

Can the guarantee be limited?

Some lenders permit a limited guarantee covering a specified portion of the debt. The precise obligation must be confirmed in the loan and guarantee documents.

Can a guarantor be released later?

Potentially. Release is subject to lender approval and may depend on the loan balance, property value, repayment history and current lending criteria. It should not be assumed to occur automatically.

Can retired parents become guarantors?

Potentially, but the lender will consider their income, assets, liabilities, age, retirement plans and ability to meet the guarantee. Policies vary considerably between lenders.

What risks does a guarantor accept?

A guarantor accepts genuine financial and legal risk, including potential responsibility for the guaranteed debt, the possibility that their property may be at risk, reduced future borrowing capacity, and possible impact on retirement or investment plans. Government financial guidance recommends treating a guarantee as seriously as taking out the loan yourself.

Is a guarantor arrangement the only way to buy sooner?

No. Alternatives include building a larger deposit, purchasing a less expensive property, paying lenders mortgage insurance, receiving a genuine financial gift, exploring government home-buyer initiatives, buying jointly with another person, or delaying the purchase. Each option has different financial and legal implications.

Does Mortgage Broker Perth by Natloans assist buyers throughout Perth?

Yes. Natloans assists buyers and families across the Perth metropolitan area and throughout Western Australia.

Where can I estimate my borrowing power?

Natloans provides a borrowing power calculator on its website. Results are indicative only and do not constitute pre-approval or a guarantee of borrowing capacity.

Next Steps

A family guarantee can potentially help an eligible buyer purchase sooner, but it creates serious obligations for the guarantor. Both parties should understand the risks, obtain appropriate independent advice and ensure the proposed home loan is affordable before proceeding.

Source References

General information only. This article does not constitute personal financial or legal advice or credit approval. Guarantors should obtain independent legal advice and consider seeking independent financial advice. Lending criteria, fees, terms and conditions apply and vary between lenders. Rates, eligibility thresholds and government initiatives should be confirmed against current criteria at the time of application.

Check the actual guarantee, not just the deposit percentage

ASIC Moneysmart’s guarantor guidance, updated 9 September 2026 and checked 15 October 2026, recommends understanding the amount, interest, fees and charges you might owe. A limited guarantee may reduce the obligation but does not remove the risk to a secured home. Ask when the limit can reduce and what ends the guarantee; future borrowing and family relationships can also be affected. Seek independent advice before signing, especially if you feel pressured.

The National Credit Code, section 90 (30 June 2026 compilation) sets conditions for enforcing a judgment against a guarantor where the Code applies. It includes the usual unsatisfied debtor judgment and written-demand condition, with alternatives involving court relief, unsuccessful reasonable attempts to locate the debtor or insolvency. This is not a universal promise of a property-sale-first sequence. Applicable notice, contract and other protections need individual legal interpretation.

Keep a written release and monitoring plan

This is an editorial family-planning checklist, not a commitment by Natloans or a lender to a particular term. A family guarantee differs from a government home-buyer guarantee and from a gift. Government-scheme eligibility, genuine-savings requirements and the borrower’s ability to repay must be checked separately. The source offers phone, video and secure document transfer, with face-to-face appointments by arrangement; it does not identify a staffed Perth office or guarantee approval for retired parents or an investment-property security.

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