How much equity do you have — and how much could you borrow?
Your home equity is the portion of your property that you own outright — the difference between what your home is worth and what you still owe on your mortgage. It represents your financial stake in the property and grows over time through two mechanisms: paying down the mortgage capital, and house price appreciation.
Equity can be accessed through remortgaging (borrowing more against the property), a second charge mortgage, or for older homeowners, equity release products like lifetime mortgages.
Simple formula: Home equity = Current property value − Outstanding mortgage balance. If your home is worth £350,000 today and you owe £180,000 on your mortgage, your equity is £170,000 (48.6% of the property value). Your equity changes over time: it increases with each mortgage payment (the capital portion), with house price rises, and with any improvements you make; it decreases if you borrow more against the property or if house prices fall.
The maximum you can release depends on your maximum acceptable LTV and your current outstanding balance. At 80% LTV on a £300,000 property, the maximum new mortgage is £240,000. If your current balance is £140,000, you could release up to £100,000 in equity. At 75% LTV, you'd access up to £85,000. Lenders also apply affordability criteria — the total new mortgage must be affordable based on your income. Getting an accurate current property valuation (via a surveyor or lender's free valuation) is the first step.
Common uses include home improvements (loft conversions at £30,000–£60,000; extensions at £50,000–£150,000, which often add more value than they cost); debt consolidation (replacing high-interest credit cards/loans — reduces interest cost but converts unsecured debt to secured, meaning your home is at risk); helping children with house deposits; funding renovations; or buying an investment property. Be cautious about releasing equity for everyday spending — this erodes the financial safety net your equity provides.
Equity release is available to homeowners aged 55 or over and lets you access equity without monthly repayments. A lifetime mortgage (the most common type) adds compound interest to the outstanding debt, which is repaid from the property sale when you die or move into long-term care. The no-negative-equity guarantee (required by the Equity Release Council) ensures you'll never owe more than the property value. However, compound interest can significantly erode the remaining estate value. Always get independent financial advice regulated by the FCA before taking equity release.
Yes, releasing equity typically increases your LTV, which can push you into a higher rate band. For example, if your current LTV is 45% and you remortgage to 70%, you move from the best-rate bracket to a slightly higher one. However, rates at 70% LTV are still competitive, and if you're using the equity productively (e.g., a home improvement that adds value, or clearing high-interest debt at 20%+ APR), the financial benefit usually far outweighs the modest rate increase on the mortgage.