Why construction has the late‑payment problem it does

Three structural features of UK construction make late payment endemic. First, the contracting chain: a project owner pays the main contractor, who pays sub‑contractors, who pay specialist trades. Cashflow at the bottom of the chain depends on the discipline of every party above. Second, retention: a percentage of each invoice is withheld until the end of the defects period, often twelve months or longer. Retention can equal a subcontractor's entire margin on the project. Third, dispute culture: the sector is comfortable with disputes, and many main contractors use them as a payment‑timing tool.

Surveys from the Federation of Master Builders, Build UK, and the construction trade press consistently show that 60 to 70 percent of subcontractors are paid late on at least one invoice per quarter. The average overdue period is double the rest of the UK economy.

The Construction Act sits alongside the Late Payment Act

The Housing Grants, Construction and Regeneration Act 1996, commonly the Construction Act, applies to most construction contracts in the UK. It does several things that matter for recovery:

  • It implies payment provisions into any construction contract that does not expressly provide them, including the right to a final date for payment and to interest on late payment.
  • It outlaws "pay‑when‑paid" clauses (with limited exceptions for upstream insolvency). A subcontractor cannot lawfully be told they will be paid only when the main contractor is paid.
  • It gives the parties a statutory right to refer any dispute to adjudication: a 28‑day quasi‑judicial process that produces a binding interim decision.

The Late Payment of Commercial Debts (Interest) Act 1998 applies in addition: statutory compensation, statutory interest at eight per cent above the Bank of England base rate, and reasonable recovery costs are recoverable from the debtor on top of any Construction Act remedies. See our pillar guide for the mechanics.

The typical construction dispute pattern

The pattern we see most often: a subcontractor completes a phase of work, submits the application for payment by the cut‑off date, and receives a payless notice from the main contractor. The notice cites a defect, an extension of time issue, or a quantity dispute. The subcontractor has the choice between accepting a reduced payment or escalating. Many accept, because the relationship matters and the next project is at stake. The main contractor relies on this calculus.

The Construction Act provides specific procedural protection here: a payless notice that does not comply with the contract or with statute is invalid, and the originally claimed sum becomes immediately due. Most payless notices issued by main contractors are technically defective. A trained eye spots this within minutes of reading.

Retention monies

Retention is the single largest source of recoverable construction debt. A typical retention clause holds back 5 percent of each invoice during the works, releasing half on practical completion and half at the end of the defects period twelve to twenty‑four months later. Many main contractors fail to release retention on time. Some never release it without challenge.

Retention is recoverable as a debt once due. The Late Payment Act applies. Statutory interest accrues from the due date. Recovery costs are payable by the debtor. We pursue retention claims as commercial debts on the same basis as principal claims; the documentary trail (the contract's retention clause, the practical completion certificate, the end‑of‑defects certificate) does most of the work.

Adjudication versus the demand sequence

For genuine quantum or scope disputes, adjudication is the proportionate route. It is fast (28 days from referral to decision), enforceable, and culturally familiar. For undisputed late payment, adjudication is not necessary. The Late Payment Act demand sequence, escalating into a county court claim or statutory demand if ignored, is faster and cheaper for sums that the main contractor is simply slow to pay.

We assess at intake which route fits. Adjudication referrals go to specialist construction counsel; demand‑sequence matters we run ourselves.

Specific contract clauses we look for

  • The payment provisions (final date for payment; payment notice deadlines; payless notice deadlines).
  • The retention clause (percentage; release triggers; defects period).
  • Pay‑when‑paid language (often present and often unenforceable).
  • Set‑off rights (frequently used by main contractors to net out alleged defects).
  • The dispute‑resolution clause (adjudication, arbitration, or litigation; choice of forum).
  • Limitation of liability (some contracts cap recoverable damages, but not the principal debt).

Our approach to construction matters

Our intake form for construction matters asks for the contract, all relevant payment notices, the application for payment in dispute, any payless notice received, and the practical completion or defects certificate where applicable. We assess within twenty‑four working hours.

If we accept the matter, Letter I is issued the same day. It cites the Late Payment Act, the Construction Act provisions where engaged, and the specific contractual provisions the main contractor has breached. The letter quantifies the principal, statutory compensation, accrued statutory interest, and recovery costs. The recovery costs are payable by the debtor; the subcontractor is not out of pocket for our fee.

Most construction debtors settle within Letter II. Those that do not are referred to either our panel solicitor for litigation or, where the dispute is genuine, to specialist construction counsel for adjudication.

What we do not handle

Genuine quantum disputes that depend on quantity surveying or expert evidence; matters where the dispute is fundamentally about scope or quality of work rather than payment timing; matters where the parties have already commenced adjudication. These are construction‑disputes work, not debt‑recovery work, and require a different specialism.

Common questions on construction debt

Is a pay‑when‑paid clause enforceable?

Generally no. Section 113 of the Construction Act outlawed pay‑when‑paid clauses in 1996, with limited exceptions for upstream insolvency. A clause purporting to make payment conditional on the main contractor being paid is usually unenforceable.

Can I add the cost of recovery to my claim?

Yes. Under Regulation 5A of the Late Payment of Commercial Debts Regulations 2002, reasonable costs of recovery are recoverable from the debtor in addition to statutory compensation. Our fee falls within this category.

How long does retention take to recover?

If the retention is undisputed and simply being withheld past the contractual release date, most matters resolve within Letter II of our sequence (typically four to six weeks from instruction). Disputed retention claims take longer because the dispute itself must be resolved, often through adjudication.

What about projects that have already gone bad?

If the main contractor has gone insolvent, the subcontractor's position is as an unsecured creditor in the insolvency process. Recovery is typically pennies in the pound. We do not pursue construction debts where the main contractor is already in formal insolvency; the procedure differs and we refer to insolvency practitioners.