ONS Construction Data: Capital Availability is Strong, but Planning Bottlenecks Still Stifle SME Developers

According to the latest ONS construction figures, private new housing orders rose 12.9% year-on-year in the second quarter of 2026 – a seasonally adjusted volume measure. 

However, private housing output, i.e. what actually got finished, fell 4.4% over the same period. 

In other words, demand for new homes is climbing. The rate at which they’re actually getting built, though, is steadily falling.

That gap, between intent and delivery, is where the UK’s SME housebuilding story now lives. And it is not a story about money.

Housebuilding Finance: Why Capital Availability Isn’t the Real Bottleneck

It would be easy to read a falling output number and reach for the usual explanation: lenders have pulled back, capital is scarce, developers can’t get the finance to build. The data doesn’t support it. As LendInvest CEO Rod Lockhart observed this July in our results presentation, funding remains available for well-structured, viable schemes. The constraint is which schemes clear that bar, not whether the capital exists: developers are becoming more selective about where they commit capital, not less able to find anyone to lend it to them.

That selectivity is the giveaway tell. Capital-constrained markets ration who gets funded. What we’re seeing instead is developers with access to funding choosing not to use it — which points to a confidence problem, not a supply-of-money problem.

Planning System Delays: Small Site Approvals Hit Record Lows

The planning system is one area where this confidence is failing. The most recent Home Builders Federation (HBF) Housing Pipeline Report, based on Glenigan data, shows an approvals system in near-continuous decline: 209,781 new homes were approved in the year to September 2025 — the lowest 12-month total since 2013, and the eleventh consecutive quarterly decline, according to the report published in December 2025. 

Smaller sites bear a disproportionate share of that squeeze. 

The last available site-size breakdown – from HBF and Quantum Development Finance’s October 2025 report, Planning for Small Sites, drawing on analysis from planning consultancy Lichfields – found that approvals on sites of three to nine homes, the SME housebuilder’s natural territory, fell to around 17,000 in 2024, roughly half the historical average of 35,000. The same report found that, more broadly, the share of all planning permissions granted on small construction site starts — sites of 150 units or fewer, a category spanning everything from single SME schemes up to medium-sized developments — has fallen from close to 20% in 2008 to just 6–8% today. A ten-home scheme now clears substantially the same bureaucratic ground as a two-hundred-home one, without the balance sheet to absorb the wait.

The consequence has been a near-total reshaping of who builds Britain’s homes. SME housebuilders delivered around 40% of new homes in the late 1980s. According to the Federation of Master Builders’ Small House Builders’ Survey 2025, launched in December 2025, that figure now stands at roughly 9%.

Construction Cost Volatility: How Price Spikes Target Single-Site SME Developers

There’s a second, less discussed mechanism at work, and it’s structural rather than political. Grant Thornton’s analysis of the sector makes the point plainly: unlike large developers with diversified portfolios, SME builders typically rely on one or two live sites, which leaves them highly exposed to delay in a way volume housebuilders simply aren’t.

The same asymmetry applies to costs. BCIS’s Private Housing Construction Price Index – a quarterly survey of small, medium and national housebuilders – put annual housebuilding cost inflation at 2.3% in the first quarter of 2026, with respondents themselves forecasting a further rise toward 3.3% by the second quarter. That headline conceals sharp divergence underneath it: Department for Business and Trade data, reported via BCIS, show that in the twelve months to March 2026, prices for gravel, sand, clays and kaolin rose 8.4% and fabricated structural steel rose 8.2%, while concrete reinforcing bars fell 7.1% over the same period. A volume housebuilder, buying across dozens of sites through national framework agreements, can average that volatility out, or forward-buy against it. A developer with one site under construction is simply exposed to whichever material that site happens to need, at whatever price it happens to be trading at that month. There is no portfolio to hedge with.

Geopolitical shocks make the asymmetry worse, not better. HBF’s second quarterly SME Developer Sentiment Survey, run with Quantum Development Finance and published in July 2026 in the wake of the conflict in the Middle East, found development viability had overtaken planning delays for the first time as SME builders’ most significant barrier – cited by three-quarters of respondents, up from 57% at the start of the year. 

The same survey found the share of builders citing material cost and availability as a top-three concern jumped from 10% to 30% in a single quarter, and that over nine in ten said their outlook for the next year had worsened. Large developers absorb that kind of shock across a national pipeline. A builder with one scheme on the go has nowhere to spread it.

Closing the Housing Output Gap: Structural Reform Needed for SME Housebuilders

Put the pieces together and the picture is coherent: demand for SME-built homes is real and growing, capital to fund them is available, and the constraint sits entirely in the space between planning consent and delivery — a space where risk concentrates on the smallest, least diversified operators in the market, and where no single body is accountable for how long a scheme sits waiting on a decision it doesn’t control.

That is not a case for another funding scheme. It is a case for treating the planning and consenting process for small sites as a structural problem in its own right — one that determines, more than anything else in this data, whether the government’s housing target is delivered by the sector that has historically built a meaningful share of the country’s homes, or by an ever-narrower group of volume builders who can absorb what smaller firms no longer can.

The order book says the appetite to build is there. Today’s ONS figures say the system isn’t letting it through.