A secured homeowner loan, remortgage and further advance can all allow a homeowner to raise money against a property, but they change the existing mortgage in different ways. A useful comparison starts with the same borrowing need and considers the current mortgage, available terms, fees, repayment period, total amount repayable and household affordability for each realistic route.
Key considerations
What is the difference between the three options?
A secured homeowner loan normally adds a separate loan and legal charge alongside the existing mortgage. The first mortgage stays in place, and the homeowner makes a separate payment for the new borrowing. This type of agreement is also commonly called a second-charge mortgage, second mortgage or secured loan.
A remortgage replaces the existing mortgage with a new mortgage, usually from another lender. If the homeowner wants additional funds, the new mortgage is large enough to repay the current mortgage and provide the agreed extra amount. The new rate and terms therefore apply to the mortgage balance being replaced as well as the additional borrowing.
A further advance is additional borrowing from the existing mortgage lender. It remains with that lender, but the advance can have a different interest rate, repayment term and product conditions from the main mortgage. All three routes use the property as security, and all remain subject to the relevant affordability, credit and property checks.
Why is a like-for-like comparison important?
A comparison can become misleading if each route uses a different borrowing amount or repayment period. Start with one clearly defined need: the same amount, for the same purpose, compared over time periods that make sense for the household budget and the expected life of what is being funded.
Record the existing mortgage balance, rate, remaining term and any early repayment charge before looking at new borrowing. Then obtain current, personalised information for each realistic option. An advertised rate or calculator result cannot show the final cost or confirm that an application will be accepted.
Compare the monthly payment, but do not stop there. The interest rate, APRC where applicable, fees, repayment term and total amount repayable show different parts of the cost. Check whether fees would be paid separately or added to the borrowing and charged interest.
How does a secured homeowner loan affect the existing mortgage?
A secured homeowner loan normally leaves the first mortgage unchanged. This can matter where the existing mortgage has a rate or feature the homeowner wants to retain, or where replacing it would trigger an early repayment charge. Only the new amount is placed into the second agreement.
Keeping the first mortgage does not make the overall arrangement simple or automatically cheaper. The second-charge loan has its own rate, fees, term, payment date and early-settlement conditions. Its rate can be higher than a first-charge mortgage rate, and the household must be able to manage both secured payments.
The first and second lenders have legal charges over the same property. If the home is sold, the secured balances will normally need to be settled, with the first charge usually repaid before the second. If sale proceeds do not clear the secured borrowing, a shortfall may remain payable.
What changes when you remortgage to raise money?
A remortgage pays off and replaces the existing mortgage. This can bring the mortgage and additional borrowing into one new agreement and payment, but it also means giving up the existing mortgage terms. The new lender will assess the enlarged mortgage using its current criteria.
The rate on the new mortgage may appear lower than the rate on a second-charge loan, but the comparison needs to account for the whole balance being refinanced. A homeowner moving away from a favourable existing rate could pay a higher rate on much more than the extra amount required.
Possible costs include an early repayment charge on the existing mortgage and product, valuation, legal or advice fees for the replacement mortgage. Some deals may include or contribute towards particular costs, but this varies. Use the figures that apply to the individual transaction rather than assuming remortgaging is free.
How does a further advance work?
A further advance is requested from the current mortgage lender. The existing mortgage remains with that lender, and the additional amount may sit in a separate account or product part with its own rate and term. The lender will still consider affordability, credit information, the property and the purpose of the borrowing.
This route avoids moving the main mortgage to a different lender, but it should still be compared with the available alternatives. The further-advance rate may differ from the current mortgage rate, and fees or product conditions can apply. Ask whether the extra borrowing must run for the remaining mortgage term or whether a shorter appropriate term is available.
Having an existing relationship with the lender does not guarantee acceptance or make a further advance the lowest-cost option. Use a personalised illustration or equivalent figures to understand its payment, term and total cost alongside the main mortgage.
Which costs can change the result?
The lowest interest rate does not necessarily produce the lowest total cost. A product fee added to borrowing can attract interest, while a longer term can reduce the monthly payment but increase the amount paid over time. Early repayment charges can materially affect the cost of replacing or settling an agreement.
Review the timing as well as the amount of each cost. A charge due now affects the cash needed to complete, while a fee added to the balance increases the borrowing. A variable rate introduces uncertainty about future payments, while a fixed rate can include restrictions or charges for repaying early. The offered agreement determines what actually applies.
- The interest rate, whether it is fixed or variable, and when it can change.
- The APRC and total amount repayable shown in personalised information.
- Product, arrangement, advice, valuation and legal costs where applicable.
- Any early repayment charge on the existing mortgage or new borrowing.
- Whether fees are paid separately or added to the balance and charged interest.
- The repayment term and whether it extends beyond the useful life of the purchase or project.
- Overpayment, partial-repayment and full-settlement conditions.
How should affordability and future plans be considered?
Property equity is not a substitute for affordability. Test the combined secured payments against accurate income, essential spending, dependants and existing commitments. Consider foreseeable changes such as retirement, reduced working hours, childcare costs, the end of a fixed rate or planned household expenditure.
Future property plans can also affect the comparison. If a move or sale may happen during the proposed term, ask what would need to be repaid, whether early-settlement charges could apply and whether transferring an agreement to another property is possible. Do not assume a mortgage or second charge can automatically move with the homeowner.
The Financial Conduct Authority has emphasised that eligibility is not the same as suitability and that alternatives and longer-term implications should be understood. Allow time to review the personalised information and ask for an explanation of anything that is unclear before accepting an offer.
Should unsecured borrowing or not borrowing also be compared?
A homeowner does not always need to use the property as security. Depending on the amount, purpose and circumstances, saving, reducing or delaying the spending, using available savings while retaining an emergency buffer, or suitable unsecured borrowing may deserve consideration.
Unsecured borrowing does not place a legal charge on the home, although missed payments can still have serious financial consequences. Its rate or available amount may differ, and a shorter term can create a higher monthly payment. Compare the full cost and risk rather than choosing solely because one route offers a larger amount or lower initial payment.
If the purpose is debt consolidation and payments are already being missed, taking further credit may not address the underlying difficulty. Consider free independent debt advice and speaking with existing creditors before turning unsecured debts into borrowing secured against the home.
A checklist for comparing your options
There is no route that is automatically best for every homeowner. Build the comparison from current figures, keep the purpose and amount consistent, and consider the effect on the existing mortgage as well as the cost of the extra borrowing.
- Define the amount genuinely needed and the purpose of the borrowing.
- Obtain the current mortgage balance, rate, remaining term and early repayment charge.
- Ask the current lender for further-advance information where that is a realistic option.
- Compare how a remortgage would reprice and replace the existing mortgage balance.
- Compare how a secured homeowner loan would sit alongside the first mortgage.
- Use personalised rates, fees, payments, terms and total-repayable figures.
- Check property valuation and combined loan-to-value assumptions.
- Test affordability if income, living costs or interest rates change.
- Consider likely moving, retirement and early-repayment plans.
- Include appropriate unsecured options, saving or spending less in the comparison.
- Read the illustration and offer carefully and consider qualified independent advice.