The machinery that finances property development and buy-to-let investment isn't quite running as smoothly as it did a year ago. New analysis suggests lending stress in private credit markets has crept back to levels not seen since 2017, and whilst this might sound abstract, it has real implications for anyone buying, selling or renting property in the UK.
Private credit isn't the mainstream mortgages you see advertised on high streets. It's the less visible funding that property developers use to build new homes, that investors use to expand their portfolios, and that some specialist lenders offer when traditional banks say no. When this market works well, it oils the wheels of the property sector. When it doesn't, consequences ripple outward.
What's happening in private credit?
The signs of strain centre on rising problem loans. When lenders start marking more borrowers as troubled or at risk of default, it signals they're less confident about repayment. The fact that these signals have returned to 2017 levels is worth paying attention to, though it doesn't mean we're heading for another financial crisis.
At £271,295, the average UK house price has risen 2.7% annually, a modest but steady climb. Yet behind that headline sits a more complicated story. Developers have faced rising construction costs, tighter margins, and changing appetite from private lenders. Some have slowed site acquisitions or paused new projects. Buy-to-let investors, who account for roughly one in five property purchases, have also become more cautious.
The Bank of England base rate sits at 3.75%, and the average five-year fixed mortgage rate is 4.79%. These aren't particularly harsh by recent standards, but they're high enough that borrowing costs more. For specialist lenders providing non-standard mortgages or development finance, the equation becomes tighter still.
Who actually feels this?
First-time buyers might wonder if this affects them directly. The short answer: indirectly. When developers struggle to finance new-build sites, housing supply tightens. Fewer new properties coming to market can support prices and reduce choice, particularly in growth areas where stock is already constrained.
Renters often feel stress in private lending markets acutely. If landlords find it harder to refinance or expand their portfolios, rental supply can tighten, putting upward pressure on rents. A landlord struggling with loan repayment difficulties might also defer maintenance, which affects tenant experience and property condition.
Sellers in slower markets may find fewer investor buyers competing for property. That can reduce bidding activity, particularly for smaller terraces, buy-to-let staples, and properties in areas attractive to portfolio investors.
Is this a warning sign?
Stress in private credit markets is worth monitoring, but it's not a sign of imminent collapse. The 2017 comparison is useful context rather than a prediction. That period saw adjustments after regulatory changes to buy-to-let lending and tax treatment of mortgage interest. It was uncomfortable for some, not catastrophic for the market overall.
What's different now is that some of this stress appears linked to debt refinancing challenges and higher rates making older loan portfolios less profitable. Banks and non-bank lenders are becoming more selective, which is a return to discipline rather than panic.
What should you actually do?
If you're buying, the environment remains workable. The average two-year fixed mortgage rate sits at 6.6%, and lenders continue to offer mortgages to borrowers with good credit and sensible loan-to-value ratios. The key is getting your finances in order early: save a decent deposit, check your credit file, and get a mortgage in principle before making offers.
If you're selling, understand that fewer investor buyers might be in the market, so price competitively and don't rely on a bidding war. Owner-occupiers remain your primary audience, and they're still buying homes at normal rates.
If you're a landlord, refinancing becomes more important to plan for. Don't wait until your mortgage expires to explore options. Lenders are more selective now, so a strong payment history and decent equity position matter more than they did eighteen months ago.
Property markets don't move on borrowed money alone, and they don't collapse because one funding source gets pickier. But when private credit markets tighten, it's a signal that risk appetites are shifting. For homeowners and buyers, that means understanding your own finances more carefully and not assuming easy money will always be available. It usually isn't.