Why second charge mortgages are becoming a strategic option for borrowers – McGrath

Over the past few years, millions of homeowners secured historically low fixed rates. As financial priorities evolve, whether that is consolidating debt, funding home improvements or restructuring finances, replacing those mortgages entirely may no longer represent the most efficient route.

This is where second charge mortgages are playing an increasingly important role.

Rather than refinancing the whole loan, a second charge allows homeowners to unlock equity while keeping their primary mortgage in place. In an environment where protecting a favourable rate has become a priority, flexibility is proving valuable for both borrowers and advisers.

Second charge sector growth

The growth of the sector reflects this shift in thinking. According to Finance & Leasing Association (FLA) data, the UK second charge mortgage market surpassed £2.1bn in new lending during 2025, representing year-on-year growth of around 24%. More than 41,000 new agreements were completed across the year, highlighting the scale at which these products are now supporting homeowners.

Sponsored

Aldermore Insights with Jon Cooper: Edition 9 – Why lending strategy is becoming more central in buy to let

Sponsored by Aldermore

Crucially, the way second charges are being used is also evolving. Historically, they were often associated with smaller borrowing needs. Today, the data tells a different story.

Average second charge loan sizes have increased steadily over the past three years, rising from approximately £45,000 in 2023 to £48,000 in 2024 and reaching more than £51,000 in 2025. That growth suggests borrowers are increasingly using second charges as part of larger financial decisions, whether consolidating higher-cost borrowing, funding significant home improvements or supporting longer-term financial planning.

Another factor supporting the market’s growth is the increasing competitiveness of the sector itself. Pricing has become more attractive, with sub-6% rates available from multiple lenders. Combined with advances in underwriting technology and stronger broker awareness, second charges have become easier to integrate into the advice process.

For advisers, this shift reinforces the importance of taking a broader view of the options available to customers. Traditional remortgages will still be the right solution in many cases, but there are also scenarios where replacing an existing low-rate mortgage may introduce unnecessary cost.

When clients want to raise capital but retain their current mortgage deal, a second charge can provide a more efficient structure. The key is ensuring it forms part of a considered, holistic advice process rather than being evaluated in isolation.

Looking ahead, the outlook for the second charge sector remains positive. The growth seen in 2025 reflects changing borrower priorities, and those dynamics are unlikely to disappear in the near term. As homeowners continue to focus on protecting favourable mortgage rates while accessing equity, second charges are well positioned to support that need.

For brokers, the opportunity lies in recognising when this structure can deliver a better outcome for customers. As mortgage advice continues to evolve towards a more strategic and whole-of-market approach, second charge lending is becoming an increasingly valuable tool in helping borrowers manage their finances more effectively.