Understanding the Basics of Calculating Home Equity

Home equity is the portion of your property that you own outright after subtracting what you still owe on your mortgage.

For Somerville residents looking to refinance, understanding how to calculate your equity is the first step toward accessing lower rates, consolidating debt, or funding your next property purchase. The calculation itself is straightforward, but knowing how lenders view that equity and what you can access makes the real difference when you apply.

How to Calculate Your Current Equity

Your equity equals your property's current market value minus your outstanding loan amount. If your Somerville home is valued at $750,000 and you owe $500,000, you have $250,000 in equity, which represents roughly 33% of the property's value.

Most lenders will let you access up to 80% of your property value without needing to pay lenders mortgage insurance, though some will go higher depending on your circumstances. Using the same example, 80% of $750,000 is $600,000. With an existing loan of $500,000, you could potentially access $100,000 in usable equity before hitting that threshold. That figure becomes important when you're weighing up whether refinancing makes sense for your situation, particularly if you're looking to fund renovations, invest elsewhere, or consolidate other debts into your mortgage.

What Affects Your Property Valuation

Lenders rely on their own valuation to determine how much your property is worth, not what you paid for it or what you think it might sell for. The valuer considers recent sales of comparable homes in Somerville, the condition of your property, and any improvements you've made since purchase.

Somerville has seen steady demand due to its proximity to both Frankston and the Mornington Peninsula, with a mix of established homes and newer subdivisions around the Tyabb Road and Eramosa Road precincts. Properties in well-maintained condition near parks or schools tend to hold value more consistently than those requiring significant work. If your home has been renovated or extended, mention this when your lender arranges the valuation, as it can influence the outcome. Keep in mind that valuations during a refinance are often desktop assessments rather than full inspections, so the valuer may rely heavily on recent comparable sales rather than visiting your property in person.

Usable Equity vs Total Equity

Total equity is the dollar amount you own outright, but usable equity is what you can actually borrow against without triggering additional costs or restrictions. Lenders typically cap borrowing at 80% of the property value to avoid lenders mortgage insurance, though this varies by lender and loan type.

Consider a scenario where your Somerville property is valued at $800,000 and your loan balance sits at $450,000. Your total equity is $350,000, but your usable equity is calculated differently. Take 80% of $800,000, which gives you $640,000. Subtract your current loan balance of $450,000, and you're left with $190,000 in usable equity. If you wanted to access more than that amount, you'd either need to pay lenders mortgage insurance or find a lender willing to lend above 80%, which usually comes with higher rates. That difference between total and usable equity is where many refinance applications either succeed or stall, so it's worth understanding before you apply.

Accessing Equity Through a Refinance Application

When you refinance to access equity, you're effectively increasing your loan amount while switching lenders or restructuring your existing loan. The lender will assess your income, expenses, and credit history just as they would for a new loan, and the amount you can access depends on what you plan to use it for.

If you're releasing equity to purchase an investment property, lenders will often factor in the expected rental income when assessing your borrowing capacity. If you're consolidating personal debts, they'll want to see that your overall position improves and that you're not simply moving unsecured debt into a secured loan without a clear benefit. In our experience, applications that clearly outline the purpose and provide supporting documentation move through much faster than those that leave the lender guessing. You'll also need to factor in costs like discharge fees from your current lender, application fees with the new lender, and valuation costs, which can range from a few hundred to over a thousand dollars depending on the property and lender.

When Refinancing to Access Equity Makes Sense

Refinancing to unlock equity works when the cost of doing so is outweighed by what you gain, whether that's a lower rate, funding for a deposit on another property, or consolidating high-interest debts into your mortgage at a lower rate. If you're coming off a fixed rate period and your equity has grown due to property value increases or loan repayments, a loan health check can show whether refinancing stacks up financially.

Some Somerville residents refinance to access equity for home improvements that add value, such as adding a second bathroom or updating kitchens in older homes near the Somerville Village shopping precinct. Others use it to enter the investment market or help family members with a deposit. The key consideration is whether the additional borrowing aligns with your longer-term financial position and whether the new loan structure, including any offset or redraw features, supports how you manage your money day to day.

Call one of our team or book an appointment at a time that works for you to talk through your equity position and what options make sense for your Somerville property.

Frequently Asked Questions