What is a secured loan?
A secured loan is borrowing backed by an asset you own, most often your home. In the UK a secured loan against a mortgaged property is usually a second charge mortgage.
Because the lender can recover its money by forcing a sale if you default, the risk to them is lower — so rates are lower and the amounts available are much larger than unsecured lending.
The trade-off is blunt: miss enough payments and you can lose the asset. That makes secured borrowing powerful and genuinely risky in equal measure.
How do secured loans work?
The lender values your property, works out the available equity, and lends against it behind your existing mortgage. Loans commonly run from £10,000 to £500,000 over five to 30 years.
Rates may be fixed or variable, and a valuation, legal work and broker fee are usually involved, so completion takes three to six weeks rather than days.
Here's a fictional example:
Meet Tom and Alice, funding an extension
Their home is worth £400,000 with £180,000 left on the mortgage, leaving £220,000 of equity.
They borrow £60,000 over 15 years as a second charge at 7.4%, giving monthly payments of about £553 on top of their existing mortgage.
Their first-charge mortgage is fixed at 2.1% until 2029, so keeping it untouched and adding a second charge is cheaper than remortgaging the whole balance at today's rates.
What types of secured loan are there?
Second charge mortgage
Sits behind your main mortgage on the same property.
Lets you keep a cheap existing mortgage rate while releasing equity.
Homeowner loan
A general term for secured lending to owner-occupiers, usually £10,000 upwards.
Used for home improvements, consolidation or large one-off costs.
Secured business loan
Company borrowing backed by commercial or residential property, or by equipment.
Unlocks larger sums and longer terms than unsecured business lending.
Is a secured loan right for me?
Secured borrowing tends to suit:
- 1
Homeowners with equity and a cheap mortgage
Keeping a low fixed rate intact while borrowing separately can beat remortgaging outright.
- 2
Larger projects
Extensions, loft conversions or consolidating substantial debt where unsecured limits fall short.
- 3
Borrowers with imperfect credit
Security widens the pool of willing lenders when unsecured applications are declined.
Am I eligible for a secured loan?
Lenders will assess:
Equity in the property: Most lend to a combined loan-to-value of 75% to 85% including your existing mortgage.
Affordability: Both the new payment and your existing mortgage are stress-tested against your income.
Credit history: Adverse credit is often accepted, though it pushes the rate up.
Property type and tenure: Non-standard construction, short leases and some flats above commercial premises are restricted.
First lender consent: Your existing mortgage lender must permit a second charge, which is normally routine.
How to compare secured loans
Look past the headline rate and check these five things:
- 1
Representative APR vs your rate
Only 51% of accepted applicants have to be given the advertised APR. Use an eligibility checker to see a personalised rate before you apply.
- 2
Total cost of credit
A longer term lowers the monthly payment but raises the total interest paid. Always compare the total repayable figure, not just the monthly amount.
- 3
Fees
Arrangement fees, broker fees, valuation fees and early settlement charges can add several percent to the real cost.
- 4
Early repayment terms
Some lenders charge up to two months' interest to settle early. Others let you overpay freely, which is worth a slightly higher rate.
- 5
Speed and flexibility
Payment holidays, adjustable dates and same-day funding matter more than a 0.2% rate difference for many borrowers.
Secured loan pros and cons
Pros
- Lower rates than unsecured borrowing
- Much larger amounts available
- Long terms reduce monthly payments
- More accessible with imperfect credit
Cons
- Your home is at risk if you default
- Set-up, valuation and legal fees apply
- Longer terms mean far more total interest
- Slower to arrange than a personal loan
Secured loan or remortgage?
Remortgaging the whole balance is usually cheapest if your current deal is expiring or your existing rate is above market.
If you're locked into a low fixed rate, or facing a large early repayment charge, a second charge lets you borrow without disturbing the cheap money you already have.
Run both quotes side by side over the same term — the answer flips depending on your existing rate and how long is left on the deal.
What if I can't keep up secured loan repayments?
Your home may be repossessed if you do not keep up repayments on a loan secured against it. This is not boilerplate — it is the defining risk of the product.
Contact your lender at the first sign of difficulty. Options include a temporary payment reduction, a term extension or switching to interest-only for a period.
Free advice from StepChange, National Debtline or Citizens Advice should come before any further borrowing to cover payments.
What are the alternatives to a secured loan?
Before putting property at risk, consider:
Unsecured personal loan
Up to around £50,000 with no asset at risk, though rates are higher and terms shorter.
Further advance from your mortgage lender
Additional borrowing on your existing mortgage, often with lower fees than a separate second charge.
Equity release
For over-55s only, releasing capital with no monthly payments — but interest rolls up and erodes what's left to inherit.
FAQs
About this guide
Written and reviewed by the Grow Your Business team, and kept up to date as rates, rules and provider terms change.
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