Building Safety Act: Court Extends Liability to Contractor Groups in Landmark Ruling

Ardmore Construction is appealing a High Court ruling that enforces a £14.9m Building Liability Order (BLO) against its group entities for historic fire safety defects. The judgment in Crest Nicholson v Ardmore confirms that insolvency does not shield associated companies from liabilities under the Building Safety Act 2022, setting a precedent for cross-entity liability in the UK construction sector.

The corporate veil just got thinner. In a move that sends shockwaves through the mid-market construction landscape, the High Court has ruled that group companies can be forced to stand behind the historic defects of an insolvent subsidiary. Ardmore Construction, which entered administration the day before an adjudicator ordered it to pay £14.9m for fire safety failures at Portsmouth’s Admiralty Quarter, is now fighting to retain its associated entities solvent. This isn’t just a legal dispute; it is a liquidity crisis waiting to happen for any contractor with a complex group structure.

Justice Constable’s decision grants Crest Nicholson two distinct Building Liability Orders. The first is anticipatory, covering future trial liabilities, even as the second enforces the existing adjudication award. The court found it “just and equitable” to pierce the corporate shield, citing common ownership, control, and the specific restructuring moves Ardmore made to isolate liabilities. For the C-suite, the message is brutal: restructuring for tax efficiency or risk isolation may no longer protect you from the Building Safety Act’s long arm.

The Insolvency Loophole Closes

Historically, developers facing defective premises had to queue behind secured creditors when a contractor went bust. That dynamic has shifted. The court rejected Ardmore’s argument that adjudication awards were too temporary to support a BLO, confirming they create binding liability unless overturned. This removes the “wait and see” strategy that many specialist construction law firms previously advised clients to adopt. Liability now tracks across the group immediately, regardless of the subsidiary’s balance sheet health.

The fiscal implications extend beyond the £15m price tag. It forces a re-evaluation of contingent liabilities across the entire sector. If a subsidiary from 2007 can drag a 2026 parent company into court, then risk models based on statute of limitations are obsolete. Capital allocation strategies must now account for “zombie liabilities” that can be resurrected by new legislation.

“This landmark decision has far-reaching implications for the construction industry. It significantly strengthens the ability of developers and building owners to recover remediation costs and reinforces the principle that those responsible for building safety risks will ultimately be held to account across group structures.”

Mark Lennon, construction partner at Gateley Legal, acting for Crest Nicholson, highlighted the severity of the shift. His assessment aligns with the growing consensus among institutional investors that construction exposure requires deeper due diligence. It is no longer sufficient to check the trading entity’s credit rating; the entire group’s exposure to legacy defects must be stress-tested.

B2B Risk Mitigation Strategies

As the appeal process unfolds, the market is already pricing in higher risk premiums for contractors with legacy portfolios. This creates an immediate demand for specialized corporate restructuring and insolvency practitioners who understand the intersection of the Building Safety Act and group law. Standard bankruptcy protection is no longer a firewall. Firms need to proactively audit their group structures to identify where “just and equitable” orders might apply.

Insurance underwriters are as well watching closely. The ruling suggests that professional indemnity policies may need to be rewritten to explicitly cover BLOs issued against non-trading entities. A gap in coverage here could be fatal. We are seeing early indicators that carriers are tightening terms for firms involved in pre-2022 residential developments, particularly those with combustible cladding or complex fire-stopping histories.

• Immediate Liability Recognition: Adjudication awards are now treated as “relevant liabilities,” accelerating cash outflow requirements.
• Group-Wide Exposure: Parent companies and sister entities are no longer safe havens for subsidiary debts related to building safety.
• Restructuring Scrutiny: Past corporate reorganizations intended to ring-fence assets are now subject to judicial reversal under the “just and equitable” test.

The Admiralty Quarter development, delivered between 2007 and 2009, involved widespread fire safety failures including combustible insulation and missing cavity barriers. These are not minor defects; they are systemic failures that trigger the highest level of regulatory scrutiny. For developers holding similar assets, the cost of remediation is no longer a negotiation; it is a recoverable debt that follows the contractor indefinitely.

The Appeal and Market Trajectory

Ardmore’s spokesperson stated the legislation was not intended to apply this way, signaling a potential Supreme Court battle. Though, the market rarely waits for final judgments to adjust. We expect to see a surge in demand for enterprise risk management and compliance services as boards scramble to quantify their exposure. The “evergreen” nature of these liabilities means they will hang over balance sheets for the next decade, affecting borrowing covenants and M&A valuations.

Investors should monitor the appeal closely, but not with optimism. The High Court’s reasoning regarding “common ownership and control” is difficult to rebut without dismantling the group structure entirely. For the wider construction sector, this ruling is a wake-up call. The era of hiding behind limited liability for historic safety failures is over. The bill has come due, and the court has decided exactly who pays it.

As we move into Q2 2026, the divergence between contractors with clean legacy records and those with hidden defects will widen. Smart capital will flow toward firms that have proactively resolved their Building Safety Act exposures. For those still exposed, the only viable path forward is transparent engagement with top-tier financial advisory firms to manage the inevitable liquidity crunch. The Building Safety Act was designed to protect residents; this ruling proves it will also protect the balance sheets of those left holding the bag.