What are Guarantor Home Loans in New Zealand?

A guarantor home loan lets you borrow with a smaller deposit by having someone (usually a parent) use their property as security for part of your loan.

The typical scenario involves a first home buyer who has enough income to service a mortgage but hasn't saved the full 20% deposit. Rather than waiting another two or three years while Auckland property values continue to climb, a parent offers to guarantee a portion of the loan using equity in their own home. You get into the market sooner, the lender has additional security, and you avoid paying a Low Equity Premium on the full loan amount.

This arrangement doesn't mean your guarantor hands over cash. Their property simply acts as backup security until you've built enough equity to release them from the guarantee, which often happens within two to five years depending on how quickly you pay down the loan and whether property values rise.

How the Guarantee Actually Works

The guarantor pledges their property (or a portion of its equity) as additional security for your home loan. If you can't meet repayments, the lender has the right to sell the guarantor's property to recover the debt. The guarantee usually covers the portion of the loan that exceeds 80% of your property's value, rather than the entire loan amount.

Consider a buyer purchasing in Auckland who has saved a 10% deposit but not the full 20% typically required to avoid a Low Equity Premium. At a 90% LVR, they would normally face an additional margin of around 1% to 2% on their interest rate, adding hundreds of dollars to monthly repayments. With a parental guarantee covering the portion between 80% and 90% LVR, the lender treats the risk differently. The buyer might avoid the LEP entirely or pay it on a much smaller portion of the loan, while the parents don't actually hand over any money upfront.

Who Qualifies as a Guarantor

Most lenders require the guarantor to be an immediate family member with sufficient equity in their own property and the financial capacity to service your loan if needed. They'll assess the guarantor's income, existing debts, and age, as some lenders won't accept guarantors who are close to or in retirement.

The guarantor needs to own property with enough available equity to cover the guaranteed portion. If they still have a mortgage, the lender calculates whether the remaining equity after their own loan is sufficient. They'll also need to demonstrate they could afford the repayments on your loan if you defaulted, which means their income and expenses get scrutinised just as closely as yours. Anyone considering standing as guarantor should get independent legal advice before signing, and most lenders require proof they've done so.

The Costs You'll Still Need to Cover

Even with a guarantor, you still need genuine savings for your deposit and enough cash to cover all the upfront costs that sit outside the loan. Legal fees, valuation costs, building inspections, and insurance all need to be paid before settlement.

In Auckland, these costs can add up quickly. Legal fees typically run between $1,500 and $2,500, while a building inspection might cost another $600 to $1,200 depending on the property type. If you're buying an apartment, you'll also need to budget for a review of the body corporate records. A guarantor helps with the deposit shortfall, but it doesn't remove the need for savings to cover these settlement expenses. Lenders want to see you have skin in the game and can manage the financial responsibilities of homeownership beyond just the mortgage repayment.

When You Can Remove the Guarantee

You can usually release your guarantor once your loan balance drops to 80% of your property's value. This happens either through paying down the loan, property value growth, or a combination of both.

In our experience, most borrowers in Auckland manage to release their guarantor within three to five years. If property values increase even modestly and you're making regular repayments, you build equity faster than you might expect. Some borrowers accelerate the process by making extra repayments or using bonuses and tax refunds to pay down the principal. Once you reach that 80% LVR threshold, you apply to the lender for a revaluation and request the guarantee be removed. The lender reassesses your income and the property value, and if everything stacks up, the guarantor is released from their obligation.

Risks Your Guarantor Should Understand

The guarantor is legally responsible for the portion of the loan they've guaranteed if you can't pay. Their property can be sold to cover your debt, and a default on your loan affects their credit file as well as yours.

This isn't a theoretical risk. If you lose your job or face unexpected financial hardship and can't make repayments, the lender will pursue the guarantor. It can strain family relationships if expectations weren't clear from the start. The guarantor also can't use that portion of equity for anything else while the guarantee is in place. If they wanted to downsize, refinance, or access equity for renovations, the guarantee limits their options. Both parties need to go into this with a clear exit plan and regular communication about finances.

How This Compares to Other Low Deposit Options

A guarantor loan is one of several ways to buy with less than 20% deposit in New Zealand. You could also pay a Low Equity Premium without a guarantor, use KiwiSaver through the First Home Grant or First Home Loan scheme, or wait until you've saved a larger deposit.

Each option has different trade-offs. Paying a Low Equity Premium means you're genuinely independent but face higher interest costs that compound over time. The First Home Loan scheme offers low deposit lending without LEP, but comes with price caps that can rule out much of Auckland. A guarantor loan sits somewhere in the middle: you get into the market sooner without long-term interest penalties, but you involve family in a legally binding commitment. For buyers with stable income but limited savings, and parents with available equity who want to help, it's often the most efficient path forward.

Setting Up a Guarantor Loan in Auckland

You'll need to approach the process as though two separate parties are applying for finance. The lender assesses your income, expenses, credit history, and the property you're buying, while simultaneously reviewing the guarantor's financial position and property equity.

Working with a mortgage adviser who regularly structures guarantor loans makes the process more efficient. They'll know which lenders have the most flexible guarantor policies, how to position the application to minimise the Low Equity Premium, and how to structure the guarantee so it's released as quickly as possible. Both you and your guarantor will need to provide income verification, bank statements, and details of existing debts. The guarantor's property will be valued, and both parties sign separate loan documents. Expect the process to take slightly longer than a standard home loan application because of the additional legal and assessment work involved.

Call one of our team or book an appointment at a time that works for you. We'll walk you through how a guarantor loan could work for your situation, what your parents would need to provide, and how quickly you could realistically remove the guarantee once you're in the property.

Frequently Asked Questions