How negative equity happens
Equity is the share of your home you actually own, the value minus what you owe. When house prices fall below what you paid, or your mortgage balance barely reduces, that equity can disappear and turn negative.
It's most common among buyers who put down a small deposit (high loan-to-value), people on interest-only mortgages where the capital isn't being repaid, and anyone who bought near the top of a market that then dropped. A larger deposit and a repayment mortgage both give you a buffer against it.
A worked example
| At purchase | After a price fall | |
|---|---|---|
| Property value | £210,000 | £180,000 |
| Mortgage balance | £200,000 | £198,000 |
| Equity | +£10,000 | −£18,000 |
| Position | Positive equity | Negative equity |
A 5% deposit gives little cushion if prices drop even modestly.
When negative equity matters
- Selling, you'd need to cover the shortfall between the sale price and the mortgage.
- Remortgaging, lenders may not offer a new deal, leaving you on the standard variable rate.
- Moving home, porting your mortgage is harder without equity for a new deposit.
- It matters far less if you can afford your payments and plan to stay put.
How to get out of negative equity
Stay put if you can
If you don't need to move, keep paying: prices recover over time and a repayment mortgage shrinks the balance.
Overpay where possible
Reducing the balance faster (within your ERC-free allowance) closes the gap sooner.
Switch to repayment
If you're interest-only, moving to repayment starts paying down the capital.
Improve the property
Sensible improvements can lift the value, though weigh the cost against the likely uplift.
Talk to your lender
If you must move or are struggling, ask about negative equity mortgages, payment options or porting.
It's only 'real' if you have to sell
Negative equity is a paper loss until you crystallise it by selling. If you can keep up repayments and stay in the home, time, overpayments and a recovering market usually resolve it without you doing anything drastic.
Don't miss payments to fund a move
Falling into arrears damages your credit and risks repossession, which is far worse than negative equity itself. If money is tight, contact your lender early, they must treat you fairly and explore options with you.