Courts Put AI and Building Safety in the Same Room: What the TCC Guide 2026 Means for Builders

A Courtroom Update That Every Site Manager Should Read

The judiciary doesn't usually make front-page news in the trades press. But the fourth edition of the Technology and Construction Court (TCC) Guide, which came into force on 1 July 2026, is worth 10 minutes of any contractor's time. It is the first edition to put the Building Safety Act 2022 and AI governance into the same practical document.

The Courts and Tribunals Judiciary published the guide last month after the previous edition sat unchanged since October 2022. A lot has happened in four years. Gateway procedures, the Building Safety Regulator, the golden thread of information, and now AI tools embedded into the project delivery workflows that generate the very evidence a TCC case might rely on.

What's Actually New

Three things stand out for anyone in construction.

First, Building Safety Act proceedings. The 2026 guide provides dedicated guidance on BSA litigation for the first time. That matters because dispute volumes relating to higher-risk buildings are climbing. Gateway delays, remediation liability, and principal contractor accountability are all generating paperwork that has started, or will start, finding its way into TCC filings.

Second, AI. The guide now explicitly addresses how AI is used in proceedings. Civil Litigation Brief, published the same week the guide dropped, put it plainly: the section is relatively short but significant, recognising that AI tools are going to be used and that legal representatives remain personally responsible for whatever they put before the court. In practice, this lands squarely on the construction sector. AI-generated programme analysis, AI-assisted document review, AI-drafted submissions: all of it now sits within a framework where a human professional carries the liability.

Third, the Procurement Act 2023 updates. The guide rewrites its procurement case guidance to reflect the new regime. For main contractors operating on public-sector frameworks, this closes a procedural gap that had been causing uncertainty since the Act came into force.

A Sector Under Pressure, With Few Brands to Show for It

None of this lands in a vacuum. Construction is still the sector that leads every insolvency table in England and Wales. The Insolvency Service's May 2026 data, published by BCIS, showed 3,803 construction firm insolvencies in the 12 months to May 2026, with the sector accounting for 17% of all cases where industry was captured. Specialised construction activities took the largest slice: 169 insolvencies in May alone.

New company formation data tells an equally uncomfortable story. According to AI Business Dispatch analysis of Companies House data, just 1,263 new SIC 41.20 (general building contracting) companies were incorporated in Q3 2026, a fall of 75.8% against the prior comparable period. Firms are not entering the sector at the rate they were. The appetite to start a building company, right now, is as low as the regulatory ask is high.

On brand protection, the construction sector is almost entirely unguarded. IPO trademark data for Q3 2026 shows only 566 Class 37 filings (the trademark class covering construction and building services), down 67.7% on the prior period. More striking: 99.1% of active SIC 41.20 companies hold no Class 37 trademark whatsoever, per AI Business Dispatch analysis of Companies House and IPO data, as of July 2026. Firms spending real money on AI tools, safety software, and BSR compliance are, in almost every case, doing so under an unprotected name.

That is a structural vulnerability. When disputes end up in the TCC, brand reputation travels with the company name. If that name is unregistered, it is also undefended.

AI in Construction: Adoption Is Real, Accountability Is Catching Up

Research published earlier this year found that 73% of builders reported daily AI usage in their operations. On live sites, adoption is concentrating around information management and compliance documentation: Golden Thread preparation, Gateway 2 evidence, programme scheduling, and subcontract audit trails. These are exactly the categories of evidence that a TCC case turns on.

What the new guide signals is that the courts are catching up with practice. AI-generated outputs are already in submissions. The 2026 guide is the judiciary's way of saying: we see it, and someone has to own it.

The message for the construction sector is blunt. AI tools are no longer a risk-free efficiency play. They sit inside the chain of professional accountability. If an AI-generated risk assessment ends up in a BSA Gateway submission, and that submission later features in litigation, the guidance is clear about where responsibility stops.

The Building Safety Levy Waits in the Wings

One more regulatory pressure point is approaching. The Building Safety Levy is scheduled to come into effect in October 2026, adding a further cost layer to residential higher-risk building development. Firms already managing lean margins, a 75.8% drop in new entrants, and rising dispute complexity under the BSA will shortly add a levy to that list.

New court rules covering AI and building safety, insolvency rates running nearly a fifth of all recorded cases, fewer new companies entering the market, and a levy three months away. The TCC Guide is the least of it. But it is worth reading anyway.