Understanding home equity
Equity is the gap between what your home is worth and what you owe. How to calculate it, how to access it, and how it grows.
How equity is calculated
Equity = current property value − loan balance. On an $850K home with a $480K loan, you have $370K equity. Two things grow it: capital appreciation (the property value rising) and principal repayments (the loan balance falling).
Lenders distinguish total equity from "useable" or "releasable" equity. Most lenders cap releasable equity at 80% of property value minus loan balance. So on the example above: 80% × $850K = $680K minus $480K = $200K useable.
How equity grows automatically
On a 30-year P&I loan, principal repayments start small (mostly interest in year 1) and grow each year. By year 10 of a typical loan, you've repaid roughly 18% of the original balance. By year 20, around 50%.
Capital appreciation is the bigger lever. A 5% p.a. growth rate doubles property value every ~14 years. The combination of repayments plus growth is why long-term homeowners accumulate substantial equity by their 50s without consciously "investing."
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