Equity is your property's value minus what you owe on it. How usable equity works, and how investors use it to buy the next property.
Equity is the difference between a property's current value and the debt secured against it.
A property worth $700,000 with a $400,000 mortgage has $300,000 of equity.
Banks won't lend against all of it. They apply an LVR limit — commonly 80% for owner-occupied security — so:
$700,000 × 80% \= $560,000 Less existing loan $400,000 \= $160,000 of usable equity
The remaining $140,000 is real but not accessible.
Usable equity in existing property can fund the deposit on the next purchase, without selling anything or saving new cash. This is the mechanism behind most portfolio growth in New Zealand.
Equity is not cash. Accessing it means borrowing against it, which increases your debt and your repayments. Rising equity feels like wealth accumulating; drawing on it is taking on more risk.
Equity can go backwards. In a falling market, equity shrinks while the loan stays the same. Investors who leveraged to their limit at the peak of a cycle have been caught by this repeatedly.
Serviceability still applies. Having usable equity doesn't mean a bank will lend — you still need the income to service the larger debt, and DTI limits apply.
Last reviewed: 1 August 2026 · General information only, not financial advice.
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