What Is a Guarantor Home Loan?

A guarantor home loan is a home loan where a family member, usually a parent, uses the equity in their own property as additional security for your mortgage. Instead of saving a full 20% deposit yourself, your guarantor essentially pledges a portion of their home as a guarantee to the lender.

This arrangement can help you buy a property sooner, avoid paying Lenders Mortgage Insurance (LMI), and potentially borrow up to 100% of the purchase price.

In Australia, guarantor home loans are also sometimes called:

Family guarantee home loans
Family pledge home loans
Parental guarantee mortgages
Security guarantee loans

Whatever the lender calls it, the core concept is the same: a trusted family member puts their property on the line to help you get into the market.

If you are a first home buyer in Sydney, the Hills District, or anywhere else in NSW, and you do not yet have a 20% deposit saved, a guarantor loan could be the fastest path to owning your first home.

Get a free assessment from our Norwest mortgage brokers today.

How Does a Guarantor Home Loan Work?

Here is a straightforward example:

You want to buy a property worth $800,000 but only have $40,000 saved (5% of the purchase price). Without a guarantor, you would need to pay LMI, which can add thousands to your loan costs. With a guarantor, here is what happens:

Your lender approves your loan for $800,000.
Your property secures $800,000 of the loan (100% of the purchase price).
Your guarantor's property provides additional security, typically covering the gap between your deposit and the 20% threshold, which in this example is $120,000.
Once your loan balance drops to 80% of your property value (through repayments or property growth), the guarantee can be released.

At no point does the guarantor hand over cash. They simply allow their property to be used as collateral. The repayments are entirely your responsibility.

What Does the Guarantor Actually Guarantee?

This is the most important thing to understand before approaching a family member.

The guarantor does not guarantee your entire loan. Most lenders structure a limited guarantee, meaning the guarantor is only liable for a specific portion of the debt, typically the amount needed to bring your loan-to-value ratio (LVR) down to 80%.

Using the example above:

Purchase price: $800,000
Your deposit: $40,000
80% of purchase price: $640,000
Your loan: $760,000
Guarantee amount: $120,000 (the gap between $760,000 and $640,000)

If you were to default and the property was sold for less than the outstanding loan balance, the lender would look to the guarantor to cover the shortfall, up to the guaranteed amount.

This is a real financial risk. Any family member considering becoming a guarantor should seek independent legal and financial advice before signing.

Limited Guarantee vs Unlimited Guarantee

Not all guarantees are created equal.

Limited guarantee: The guarantor's liability is capped at a specific dollar amount or percentage of the loan. This is what most reputable lenders offer today. The risk to the guarantor is defined and contained.

Unlimited guarantee: The guarantor is liable for the entire loan balance if you default. Unlimited guarantees are rare with major lenders for residential loans, but they do exist. You should avoid these arrangements wherever possible.

Always check the exact structure of the guarantee before proceeding. A good mortgage broker will explain the terms clearly and ensure both you and your guarantor understand the liability.

Speak to a RyRo Loan Centre broker about your options.

Who Can Be a Guarantor?

Lenders are fairly specific about who qualifies as a guarantor. In most cases, the guarantor must be:

An immediate family member (parent, step-parent, or sibling in some cases)
An Australian citizen or permanent resident
Under a certain age (most lenders have a maximum guarantor age of 65 to 75, since the guarantee needs to be released before they retire)
A property owner with sufficient equity (the equity in their property must cover the guarantee amount)
In a stable financial position, with no adverse credit history

Spouses and de facto partners of the borrower are generally not accepted as guarantors, since most lenders require them to be co-borrowers instead.

Friends and non-family members are not accepted by the vast majority of lenders.

Which Lenders Offer Guarantor Home Loans in Australia?

Most of the major banks and many non-bank lenders in Australia offer guarantor home loans, though the exact policies, maximum LVRs, guarantee structures, and eligibility criteria vary significantly.

Some lenders cap the guarantee at 20% of the purchase price. Others allow up to 25% or even 30%. Some require the guarantor to take out additional life insurance. Others require the guarantee to be reviewed annually.

Because the policies differ so much, comparing lenders on your own is difficult. A mortgage broker who works with a broad panel of lenders can identify the right fit based on your situation, your guarantor's age, their property equity, and your target property type.

As specialist home loan brokers in Norwest, we work with over 30 lenders and know which ones have the most flexible guarantor policies for first home buyers in NSW.

How Much Can You Borrow With a Guarantor?

With a guarantor, most lenders will allow you to borrow up to 100% of the purchase price, and in some cases up to 105% to cover stamp duty and other purchase costs.

Without a guarantor, borrowing above 80% triggers LMI. LMI on an $800,000 purchase with a 5% deposit can easily cost $20,000 to $30,000. A guarantor loan completely eliminates that cost.

Your borrowing capacity still depends on your income, expenses, credit history, and the lender's serviceability assessment. A guarantor does not increase how much the lender believes you can afford to repay. It only removes the LMI hurdle and allows the loan to be approved with a smaller deposit.

When Is the Guarantee Released?

The guarantee is not permanent. Once your loan balance drops to 80% or less of your property's current value, you can apply to have the guarantee removed.

This can happen in two ways:

Through repayments: As you pay down your loan over time, your LVR decreases. Once you hit 80%, you can request the guarantee be released.
Through property growth: If your property increases in value, your LVR may drop below 80% even without extra repayments. You can commission a new property valuation and apply for release at that point.

Typically the release process involves the lender conducting a valuation of your property, confirming your loan balance is within the required threshold, and then formally removing the guarantor's property from the mortgage. Your guarantor's title is then clear of any encumbrance.

Most guarantors and borrowers aim to have the guarantee released within 3 to 7 years.

Find out how soon your guarantee could be released. Book a free call with our team.

Risks for the Guarantor

Being a guarantor is a serious financial commitment. Before your parents or family members agree, they should understand these risks clearly:

Their property is at risk. If you default and the property sells for less than the outstanding loan balance, the lender can pursue the guarantor for the shortfall up to the guaranteed amount. In extreme cases, the guarantor could be forced to sell their own home.

It affects their borrowing capacity. The guarantee may show as a contingent liability on the guarantor's credit file, which can reduce their ability to borrow for their own purposes while the guarantee is in place.

It can affect their retirement plans. If the guarantee is not released before the guarantor retires, it may complicate their financial situation significantly.

Legal costs apply. The guarantor will need to obtain independent legal advice before signing. This is a requirement, not optional, and comes at a cost.

None of this means a guarantor loan is a bad idea. For many families in Australia, it is how the next generation gets into the housing market. But transparency and proper advice are essential.

Step-by-Step: How to Apply for a Guarantor Home Loan in Australia

Step 1: Have an honest conversation with your family. Before approaching a lender, talk openly with your potential guarantor about the risks, the timeline for releasing the guarantee, and your financial situation.

Step 2: Get pre-approval. A mortgage broker can assess your borrowing capacity, identify suitable lenders, and obtain a conditional pre-approval so you know exactly what you can spend.

Step 3: Guarantor provides details. The lender will assess the guarantor's property equity, income, and credit history. They will need to provide a recent property valuation or the lender will order one.

Step 4: Both parties get independent legal advice. This is a standard requirement for guarantor loans in Australia. The guarantor must sign a certificate confirming they received independent legal advice before the loan can proceed.

Step 5: Loan settles. Once all conditions are met, the loan settles. The guarantor's property is registered as additional security on the mortgage title.

Step 6: Build equity and release the guarantee. Make your repayments, track your LVR, and apply to release the guarantee once you hit 80%.

Why Use a Mortgage Broker for a Guarantor Home Loan?

Guarantor home loans involve more complexity than a standard purchase loan. There are two properties, two parties, and a set of conditions that differ by lender.

Going directly to your bank means you only see one set of policies and one interest rate. A mortgage broker compares options across dozens of lenders, finds the one with the most suitable guarantee structure, and manages the paperwork for both you and your guarantor.

At RyRo Loan Centre, we specialise in home loans for first home buyers across Sydney, the Hills District, and Norwest. We have helped families structure guarantor arrangements that protect both the buyer and the guarantor, and we walk every client through the process from first conversation to guarantee release.

There is no cost to you for our service. We are paid by the lender.

Book your free guarantor loan consultation today.

Frequently Asked Questions

Can I get a guarantor home loan if I have no deposit at all?

Some lenders will approve a guarantor loan with zero deposit, relying entirely on the guarantor's equity as security. However, you will still need to cover costs like stamp duty, conveyancing, and building inspections, which typically add 3% to 5% to the purchase price. Some lenders will lend up to 105% of the purchase price with a guarantor, which can cover some of these costs.

Does the guarantor have to own their home outright?

No. The guarantor does not need to own their property outright, but they do need sufficient equity. For example, if a parent's home is worth $900,000 and they owe $400,000, they have $500,000 in equity, which is more than enough to cover a typical guarantee amount.

What happens if I cannot make my repayments?

If you miss repayments and the lender cannot recover the full loan balance by selling your property, they have the right to pursue the guarantor for the shortfall up to the guaranteed amount. This is the core risk of being a guarantor, and it is why independent legal advice is mandatory.

Will a guarantor loan affect my parents' ability to borrow?

Yes, it can. Most lenders treat the guaranteed amount as a contingent liability, which may reduce the guarantor's borrowing capacity while the guarantee is active. If your parents are planning any refinancing or new borrowing, they should factor this in.

How long does the guarantor stay on the loan?

Typically until your LVR drops to 80% of the property value. This usually takes between 3 and 7 years depending on your repayments and property growth. There is no fixed end date, but you can apply to release the guarantee as soon as you meet the threshold.

Is a guarantor loan the same as a co-borrower arrangement?

No. A co-borrower is jointly responsible for the entire loan and their income is used in the serviceability assessment. A guarantor provides security only and is not responsible for making repayments under normal circumstances. Their income is generally not used to determine how much you can borrow.

Can the guarantor be released early?

Yes. If your property grows in value faster than expected, you can commission a new valuation and apply for early release as soon as the LVR drops to 80%. Some borrowers achieve this in 2 to 3 years in a rising market.

Do first home buyers get any additional benefits with a guarantor loan?

Possibly. First home buyers in NSW may still be eligible for the First Home Owner Grant (FHOG) and stamp duty exemptions or concessions, even when using a guarantor. These benefits are based on your buyer status, not the loan structure. Your broker can confirm eligibility based on the property and purchase price.

Guarantor Home Loan Australia: The Complete Guide for First Home Buyers

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