Understanding Ultra-Long Mortgages: A Guide for Homebuyers

The Rise of Ultra-Long Mortgages

Data from the Financial Conduct Authority (FCA) indicates that more borrowers are opting for ultra-long mortgages to manage rising housing costs. In 2024, there were 116,276 mortgages taken out with repayment periods of 35 years or more. This figure is over three times the number sold in 2020, highlighting how borrowing conditions have changed significantly in recent years. As affordability challenges persist for buyers, longer mortgage terms help to reduce the cost of monthly repayments.

While this can make finances easier to manage in the short term, it is more expensive in the long run. The longer a mortgage lasts, the more interest is accrued. This means borrowers could end up paying substantially more for their home over time. Additionally, the average age of first-time buyers has risen to 34, so many people could have mortgages that extend into retirement. This situation can create challenges for long-term financial planning.

The Cost of Longer Mortgages

Calculations by Compare the Market highlight the cost of ultra-long mortgages. Using the average UK house price of £293,000 and a 10% deposit, the figures show how interest costs can quickly add up over time. Based on a 36-year mortgage, the difference between a two-year fixed rate of 4.32% and a slightly lower rate of 4.03% equates to a difference of £20,197 in additional interest repayments.

This shows that even small differences in interest rates, when combined with very long mortgage terms, can significantly increase the total cost of borrowing. For borrowers considering an ultra-long mortgage, it’s important to weigh the short-term benefit of lower monthly payments against the long-term cost. We should regularly review our options as circumstances and interest rates change.

What We Know About 2025

Data for the first nine months of 2025 shows that London was the most popular area for ultra-long mortgages. During this period, 12,554 mortgages were taken out with terms over 35 years. This is slightly lower than the 14,455 recorded over the same period in 2024, but is higher than the 10,676 seen in 2023.

After London, the South West saw the most ultra-long mortgages (12,457), followed by the East of England (11,181) and the South East (10,373). These regions are where houses are most expensive, underlining the link between higher property prices and the growing use of extended mortgage terms.

Making Informed Decisions

When considering an ultra-long mortgage, we must take a step back and evaluate our financial situation. It’s essential to understand how these loans work and their long-term implications. Here are some key points to consider:

Understanding Your Financial Landscape

Before committing to a mortgage, we should assess our financial health. This includes understanding our income, expenses, and any existing debts. A clear picture of our finances will help us determine how much we can afford to borrow.

Comparing Mortgage Options

Not all mortgages are created equal. We should take the time to compare different mortgage products. Look for competitive interest rates and favourable terms. This can make a significant difference in the long run.

Seeking Professional Advice

Navigating the mortgage landscape can be daunting. Seeking advice from professionals can help us make informed decisions. They can provide insights tailored to our unique circumstances, ensuring we find a mortgage that fits our needs.

Planning for the Future

When taking out a mortgage, we should also consider our future plans. Will we be moving in a few years? Are we planning to start a family? These factors can influence the type of mortgage we choose.

Talk to Us

If you’re hoping to make your property dreams come true this year, get in touch. We can talk through your mortgage options and help find a suitable option that will work for you, both now and in the future.

Your home may be repossessed if you do not keep up repayments on your mortgage.

Sources:

Compare the Market - Borrowers Taking Out Ultra-Long Mortgages

Important Information

We are entered on the Financial Services Register under firm reference number 956902.

ZA Mortgage Solutions Ltd is registered in England and Wales under company number 13015309 at registered address Colyton, Tysea Hill, Stapleford Hill, Romford, RM4 1JP.

A fee is normally charged for our services to cover processing costs and our advice. This would be agreed with your adviser when they have assessed the case. The fee could be up to a maximum of £1000 but is typically £399.

Z.A Mortgage Solutions is an Appointed Representative of Stonebridge Mortgage Solutions Ltd, which is authorised and regulated by the Financial Conduct Authority.

*Your home may be repossessed if you do not keep up repayments on your mortgage.

We are entered on the Financial Services Register under firm reference number 956902

​ZA Mortgage Solutions Ltd is registered in England and Wales under company number 13015309 at registered address Colyton, Tysea Hill, Stapleford Hill, Romford, RM4 1JP