Common Mistakes Using Home Equity to Buy Second Home

Your first property's gone up in value and you're thinking about buying another one.

The equity sitting in that property can work as your deposit, but only if you structure it properly and only if you've got enough borrowing room left. Get either part wrong and you'll either miss out on the property or end up stretched too thin.

How Much Equity You Can Actually Use

You can typically borrow up to 80% of your current property's value without paying lenders mortgage insurance. There are lenders available who can do up to 90% without insurance for certain professions - such as doctors, dentists, lawyers, nurses etc. We also have a lender on the panel who is currently going up to 98% without LMI - something worth considering.

Under the traditional pathway, if your property's worth $850,000 and you owe $450,000, that leaves roughly $230,000 in usable equity after accounting for the 80% threshold. That amount becomes your deposit for the next purchase, though you'll still need to cover stamp duty and other costs separately or roll them into the loan if your borrowing capacity allows.

Consider a scenario where someone owns a three-bedroom house in Erina that's now valued at $950,000 with $380,000 still owing. They want to buy a unit closer to Terrigal Beach as an investment. At 80% lending, the bank will lend up to $760,000 against the Erina property. After paying out the existing $380,000 loan, that frees up $380,000 in equity. They use $200,000 of that as a deposit on a $720,000 unit and hold the rest in an offset account. The structure works because their income supports both loans and they've kept the lending ratio under 80% on both properties.

Why Your Borrowing Power Might Not Stretch

Having equity doesn't mean you can borrow against it. Lenders assess whether your income can service both the existing loan and the new one. If you're already spending most of your income on the first mortgage, childcare, and living costs, the numbers won't stack up no matter how much equity you have.

We regularly see this with Erina buyers who've upgraded their family home in the last few years and are still carrying a solid loan balance. The equity's there, but between a single income or reduced hours and a mortgage that reflects higher property values around the Central Coast, the serviceability just doesn't support a second purchase yet. That's not a dead end, but it does mean waiting until income increases or the first loan is paid down further, or considering an investment loan structure that uses rental income to offset some of the borrowing load.

Cross-Collateralisation and What It Locks You Into

When you use equity from one property to buy another, the lender will usually want both properties as security. That's called cross-collateralisation, and it means you can't sell or refinance one property without the lender's approval on the other. If you want to sell the investment property in a few years or refinance it to a different lender, you'll need to prove you can still service the remaining debt without that property's value or rental income.

In our experience, splitting the loans across two different securities from the start gives you more flexibility later. It costs a bit more upfront in legal and valuation fees, but it means each property stands alone. You can sell one, refinance one, or even switch lenders on one without needing the bank's tick on the other. If you're buying the second property as an investment, that separation becomes even more useful when tax time rolls around and you're sorting out deductible interest.

Stamp Duty and Holding Costs That Catch People Out

You'll pay stamp duty on the second property, and in New South Wales that's roughly $30,000 on a $700,000 purchase. Some buyers try to roll that into the loan, but it pushes your total borrowing higher and eats into the equity you've freed up. If you're buying an investment property, you'll also need to cover strata fees, council rates, insurance, and any periods where the property's vacant or between tenants.

A unit near Erina Fair might have strata fees around $1,200 to $1,500 per quarter on top of the usual holding costs. If you're counting on rental income to cover the mortgage and all those expenses, make sure the sums actually work with a vacancy buffer built in. Running the numbers through a home loan calculator before you commit will show you what the repayments look like when you're covering both properties at once.

Rental Income and How Lenders Treat It

If you're buying an investment property, lenders will only count 80% of the expected rental income when they assess your borrowing capacity. Although again this is the traditional methodology behind the servicing models and it changes from bank to bank - as some offer shading of 90% and higher, depending on the tenancy agreement.

So under the traditional 80% shading, if the property rents for $600 a week, the bank treats it as $480. That's to account for vacancy, maintenance, and management fees. The shortfall between the rent and the loan repayment still needs to come from your income, and that's where plenty of buyers find they can't borrow as much as they thought.

You'll also need to show the lender a rental appraisal from a local agent before they'll factor that income in. In Erina and surrounds, rental yields on units are usually tighter than houses, so don't assume the rent will cover the whole loan. If you're planning to use the second property as a holiday place or somewhere the kids can live while they're at uni, lenders won't count any income at all because it's not a genuine investment.

Structuring the Loan and Offset Accounts

If you're pulling equity out of your home to fund an investment purchase, keep the loan splits clean from the start. The debt tied to your home isn't tax-deductible, but the debt tied to the investment property is. That means setting up separate loan accounts so you can track which interest goes where.

You'll also want an offset account linked to your investment loan so any spare cash reduces the interest you're charged without messing up your deductions. If you dump extra cash into the loan itself, you can't redraw it later without risking the tax treatment. Setting this up properly at the start saves a lot of hassle with your accountant down the track and keeps everything clear if you decide to refinance or sell either property later on.

Call one of our team or book an appointment at a time that works for you. We'll run through your equity position, check your borrowing capacity, and help you structure the loans so you're not locked into something that doesn't suit where you're heading.