Shortfall

Buried in the background notes of this week's UK House Price Index for June 2026 is a line that says more about the state of the new-build market than any of the headline figures above it. HM Land Registry has stopped publishing average price and percentage change for new-build homes. Not because the methodology changed, and not because of some technical recalculation. The reason is simpler and more revealing: there aren't currently enough new-build transactions to produce a reliable result. We need to address this, as it’s both an opportunity and a red flag when assessing the sector's health.

This isn't a one-off gap in a single region. It applies across every nation and region the index covers, and it's now affected the two most recent months of data in each one. The official measure of UK house prices, i.e the dataset that underpins valuations, lending decisions, and government housing policy, currently cannot tell you what's happening to new-build prices, because so few new-build transactions are completing that the numbers fail the reliability threshold. Read next to the headline figures in the same report, and you get a striking juxtaposition.

UK house prices rose a modest 0.1% in the month and 2% annually; England managed 0.2% and 1.8%. Perfectly unremarkable numbers, describing a market that looks, on the surface, broadly stable. And beneath that stability is an admission that the new-build segment of the market has thinned out so much that the government's own statisticians can't measure it with confidence.

It's tempting to read this as a technical footnote, a methodology quirk, the kind of caveat statisticians always attach to smaller subsamples; however, transaction volume is itself a market signal, and a persistent, multi-month, nationwide shortfall in new-build completions large enough to break a national statistical threshold is not a small thing. It means new-build sales have fallen far enough, for long enough, that HM Land Registry judged the sample no longer robust enough to publish with confidence. That's not noise. That's the market telling you something, even if the index itself has gone quiet on the specifics. It also lines up with something we flagged a few weeks ago: independent data showing that roughly one in eight newly completed homes remain unsold six months after completion. Put the two together and a clearer picture starts to form. It isn't simply that new-build prices are softening; the official index can't even confirm that either way right now. New-build completions are converting to registered sales more slowly and in smaller numbers than the reporting system is built to handle. Homes are being built. They're just not selling, or not selling fast enough to show up in the numbers in the way they used to.

For an existing-homes buyer, a resale-market slowdown is inconvenient but rarely structural; a seller who can't get their price can usually wait, or lower it, and the sale still happens on ordinary terms. New-build sales don't have that same flexibility. A completed development that isn't selling isn't sitting in someone's personal life plans; it's sitting on a developer's balance sheet, against a loan facility, accruing interest and holding costs every month it remains unsold.

When national transaction volumes for new-build homes fall far enough to break a government statistical model, that's not an abstract market observation for a development lender. That's exit risk, at scale, showing up in the data before it shows up in anyone's individual loan book. This is exactly the dynamic we discussed in relation to the one-in-eight unsold figure: exit strategy in development finance has traditionally been treated as the least scrutinised part of the appraisal, priced as a formality at the end of the build programme rather than stress-tested with the same discipline as construction cost. A reporting gap this size signals that the assumption underneath that shortcut, that completed stock sells at a predictable pace, in predictable volume, needs re-examining, not just for individual schemes but as a market-wide pattern.

None of this suggests new-build development lending has become fundamentally unviable; it does, however, suggest that sales absorption assumptions, always the least interrogated line in a development appraisal, deserve considerably more scrutiny than they've had. One reason our platform is so well managed is that we saw this coming ahead of the market, and factored this sort of stress testing into decision-making a long time ago. If the volume of new-build transactions has fallen far enough nationally to break an official index's reliability threshold, then a facility built on an optimistic six-month sales period, priced close to asking, is working from an assumption the market data itself is quietly rejecting.

Sensible responses here look like realistic, locally grounded absorption timelines rather than either a national average or the developer's own best-case projection; facility terms and drawdown structures that build in room for a longer sales period as the working assumption, not a contingency; and lenders paying closer attention to local sales evidence and agent intelligence in specific submarkets, given that a national index which can no longer track new-build prices reliably is, by definition, not going to flag local softening early enough to matter. That’s why our decision-making isn't based on vague national data; it’s based on localised data and intelligence.

So what have we taken away from this? A national statistical body quietly stepping back from publishing new-build price data across every region, for two consecutive months, because transaction volumes are too thin to trust, is a bigger story than a 0.1% monthly move. For anyone in our sector who isn’t factoring this in, now is the time to treat exit assumptions with the same rigour as build costs because right now, even the government's own numbers can't tell you with confidence what's happening to the homes coming off site.

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