Building societies now account for a sizeable share of first-time buyer lending, reportedly around 35% of the market, which underlines the scale of their commitment to this segment. That is not a marginal contribution; it is a central role in helping new buyers secure a foothold in a market that has historically been constrained by deposit requirements and affordability pressures.
The mutual model has always lent itself to a longer-term view of risk and customer relationships, and that is evident in the way building societies have approached high LTV lending. While some larger banks have been more cautious at 90% and 95% LTV, best buy tables in these brackets are frequently populated by building societies. They do not simply maintain a presence; they compete hard on price and criteria.
This is not confined to traditional 90% or 95% LTV products. A number of building societies have also entered the no-deposit space, launching 100% LTV mortgages aimed at creditworthy renters, for example, who can demonstrate a strong payment track record. The latest zero-deposit launch from Melton Building Society, for example, shows innovation in this area is far from over, and mutual lenders are prepared to push the boundaries of what is possible within a controlled risk framework.
The role of private mortgage insurance
A key enabler of this activity has been the use of private mortgage insurance. Building societies have historically been among the most consistent users of these arrangements, which allow them to mitigate a portion of the credit risk on higher LTV lending. In simple terms, insurance can absorb part of the loss if a borrower defaults and the property sale does not cover the outstanding loan balance.
This structure gives those lenders greater confidence to offer higher LTV products at scale, while keeping capital requirements and balance sheet exposure within manageable limits. It also supports sharper pricing, because the risk-adjusted cost of lending can be brought down compared to holding all of the exposure directly. The result is that borrowers benefit from competitive rates at higher LTVs, rather than facing higher pricing simply because they have a smaller deposit.
Importantly, private mortgage insurance does not remove underwriting discipline. Borrowers still need to meet affordability and credit criteria, and lenders remain responsible for prudent lending decisions. What it does provide is a buffer that allows institutions to support segments that might otherwise be underserved, particularly first-time buyers who have income but limited savings.
Driving product choice and competition
Across the market, first-time buyers are benefiting from a broader choice of low-deposit products than has been available for some time. Banks and building societies alike have expanded their ranges, but the mutual sector has often been at the forefront, particularly when it comes to innovative criteria and flexible affordability models. From family-assisted products to rent-based underwriting approaches, building societies have shown a willingness to adapt to the realities facing aspiring homeowners.
The growth in high LTV options is significant because saving for the deposit still remains the single biggest barrier for most renters, or indeed, any would-be homeowner. Wage growth has helped with affordability calculations, yet saving for a 5/10% deposit in areas with elevated house prices remains challenging. By maintaining strong representation at 90%, 95% and in some cases 100% LTV, building societies are addressing that barrier directly.
There is also a competitive effect on the wider market. When building societies price competitively at higher LTVs, other lenders are forced to respond or risk losing volume. That dynamic helps to keep rates in check and ensures first-time buyers are not left with a narrow field of expensive options. The fact building societies account for more than a third of first-time buyer lending suggests this is not a niche strategy but a structural feature of the market.
A model others could follow
In our view, there is a case for more lenders to examine how private mortgage insurance could support a greater appetite for high LTV lending. While every institution has its own capital, funding and risk considerations, the mutual sector has shown it is possible to combine prudence with access. By cutting their cloth accordingly and using risk transfer tools effectively, lenders can widen access without compromising on underwriting standards.
Building societies have demonstrated that with the right structures in place, high LTV lending can be delivered in a sustainable and competitive way. As demand from aspiring homeowners remains strong, and political focus on home ownership endures, the mutual sector’s approach offers a clear template for how to balance risk, responsibility and opportunity in the years ahead.
