Beginner's Guide to Using Home Equity for a Second Property

Your existing property likely holds enough equity to fund your next purchase without waiting years to save another deposit.

The challenge for most critical care nurses considering a second property is not whether they can afford it, but whether they understand how to access the equity they already have. Usable equity is the portion of your property's value that sits above what you owe, minus the buffer most lenders require you to keep. If your home is worth $650,000 and you owe $380,000, you have $270,000 in total equity, but only a portion of that can be used as a deposit for your next property.

How Lenders Calculate Usable Equity

Most lenders will let you borrow up to 80% of your property's current value without requiring lenders mortgage insurance. Subtract what you still owe from that 80% figure, and what remains is your usable equity. Consider a critical care nurse who bought a unit several years ago for $520,000 with a 10% deposit. The loan balance has dropped to $380,000, and the property is now valued at $650,000. The lender allows borrowing up to 80% of $650,000, which is $520,000. Subtracting the existing loan of $380,000 leaves $140,000 in usable equity. That $140,000 can be used as a deposit for a second property, covering both the deposit itself and the associated purchasing costs without needing to tap into savings again.

In our experience, this calculation surprises people who assume equity means the full difference between the property value and the loan balance. The 80% threshold exists to protect the lender's position if property values shift, but it still leaves significant room to fund another purchase.

Structuring the Loan to Access Equity

Accessing equity typically involves refinancing your existing home loan or establishing a separate line of credit secured against the property. Refinancing replaces your current loan with a larger one, releasing the difference as cash you can use for the deposit. A line of credit functions more like a reserve you can draw on when needed, which can be useful if your purchase timeline is uncertain or you want to avoid paying interest on funds before you use them.

Refinancing is more common when the goal is to lock in a specific loan structure and release a known amount for a confirmed purchase. The line of credit approach suits scenarios where you are still searching for the right property and want flexibility over when you draw the funds. Both options increase your total borrowing, so the lender will reassess your borrowing capacity based on your current income, expenses, and any changes to your employment or financial position since the original loan.

Borrowing Capacity Across Two Properties

Your ability to service two loans depends on your income, existing debts, and whether the second property will generate rental income. Lenders assess serviceability by comparing your total monthly loan repayments against your after-tax income, factoring in living expenses and other commitments. If you are purchasing an investment property, they will include a percentage of the expected rental income in their calculations, though most lenders only count 80% of the rent to account for vacancies and management costs.

Consider a scenario where a critical care nurse earns $110,000 annually and currently repays $2,100 per month on their existing home loan. They want to purchase a unit as an investment property and plan to use $140,000 in usable equity as the deposit. The new loan will be around $420,000, adding approximately $2,400 per month in repayments. The unit is expected to rent for $550 per week, which translates to roughly $2,380 per month. The lender will count 80% of that, or $1,904, as income when assessing serviceability. Combined with the nurse's salary, the total income is sufficient to cover both loans and living expenses, allowing the purchase to proceed.

Shift patterns and penalty rates can complicate income calculations for critical care nurses, particularly if a significant portion of your earnings comes from overtime or weekend loadings. Lenders familiar with healthcare employment structures will factor those loadings into their assessment, while others may exclude them entirely.

Deposit Requirements and Purchasing Costs

Using equity means you are not starting from zero, but you still need to account for stamp duty, conveyancing, inspection costs, and any lender fees associated with refinancing or establishing a new loan. For an investment property, you will also need to budget for strata fees, landlord insurance, and property management if you are not self-managing. These costs can add another 5% to 7% on top of the purchase price, depending on the state and property type.

If the usable equity covers the deposit but falls short of the total purchasing costs, you may need to top up with savings or adjust the purchase price to fit within what the equity can support. Some lenders allow you to borrow up to 90% or even 95% of the property value if you are willing to pay lenders mortgage insurance, which increases the amount you can access from equity. However, this also raises your total debt and monthly repayments, so it is worth comparing the cost of LMI against the benefit of preserving your cash reserves.

Investment Property or Future Home

The structure of your loan will differ depending on whether the second property is an investment or your next home. If you are buying your next home and plan to sell or rent out your current property, the lender will want to know your intentions because it affects how they assess risk and serviceability. Moving into the new property and renting out the old one converts your existing home loan into an investment loan, which may have a different interest rate and tax treatment.

If you are keeping your current home as your primary residence and purchasing an investment property, the new loan will be structured as an investment loan from the outset. Interest on investment loans is generally tax-deductible, which reduces the effective cost of borrowing, but you will need to account for the rental income and related expenses in your tax return. Speak to an accountant before committing to a structure, particularly if you are considering debt recycling or offset strategies that involve redirecting repayments between loans.

When Equity Alone Is Not Enough

Usable equity may fall short if property values have not increased significantly since your original purchase, or if you refinanced recently and increased your loan balance. In those situations, you may need to combine equity with savings, adjust your budget to target a lower-priced property, or wait until the loan balance reduces further. Getting loan pre-approval before committing to a purchase timeline lets you confirm exactly how much equity you can access and whether your borrowing capacity supports a second loan.

Another option is to explore whether you qualify for a professional loan package that allows higher borrowing thresholds or waives LMI at higher loan-to-value ratios. Some lenders offer these packages specifically to nurses and other healthcare professionals, which can increase the usable equity available without requiring additional savings.

Call one of our team or book an appointment at a time that works for you to confirm how much equity you can access and structure the loan to suit your purchase timeline and long-term goals.

Frequently Asked Questions