Final account adjudications require procedural control.

Final account disputes are often described as valuation disputes. That description is incomplete. By the time a final account reaches adjudication, the dispute may already have become procedural before it becomes financial. The critical questions may include whether the final account machinery has been properly engaged, whether a final payment notice or certificate has become conclusive, whether adjudication has been commenced in time, and whether the dispute has been framed with sufficient precision.

The dispute in Battersea Project Phase 2 Development Company Ltd v QFS Scaffolding Ltd arose out of a substantial final account claim under a scaffolding sub-contract. The parties’ disagreement was not limited to valuation. It also raised issues about the operation of JCT final account machinery, conclusive evidence provisions and the effect of adjudication proceedings on those provisions. That made the case commercially important not simply because of the amount in dispute, but because it showed how final account recovery can turn on timing, procedural control and the preservation of the right to challenge.

Why the case matters

Final account provisions are not neutral administrative machinery. In many construction contracts, a final statement, final payment notice, final certificate or similar document may become conclusive unless challenged in the required manner and within the required period. Once that risk arises, the dispute can move away from the underlying merits of the account and towards a sharper procedural question: has the contractor preserved its right to challenge the final position at all?

For contractors and subcontractors, that distinction matters commercially. A substantial recovery position may exist on the facts, but if the final account process is not actively managed, the paying party may be able to argue that the account has become fixed by contractual machinery. Conversely, a properly timed adjudication or contractual challenge may preserve the right to dispute the final account position and prevent a payer’s assessment from hardening into a conclusive outcome.

The case is therefore a reminder that final account recovery is not simply the exercise of compiling figures at the end of the project. It is a contractual sequence. The contractor needs to know when the final account is due, what must be submitted, what the payer is required to issue, when any conclusive evidence period begins, what must be challenged, and whether adjudication or other proceedings need to be commenced to prevent finality. Those are not technical details. They may determine whether the account remains recoverable.

Final account recovery is a controlled sequence

A final account often brings together the most commercially sensitive issues on the project: measured work, variations, prolongation, disruption, acceleration, contra charges, defects, retention release, settlement items and unresolved correspondence. Each item may require its own contractual route, valuation basis and evidence trail. If those issues are not organised before the account crystallises, the contractor may enter the final account phase with a claim that is commercially substantial but procedurally vulnerable.

The risk is especially acute where the final account is large, historic or disputed across multiple heads of claim. By that stage, project teams may have moved on, records may be dispersed, correspondence may be inconsistent, and the payer may already be shaping the procedural narrative. If the contractor has not identified the contractual timetable and the relevant challenge points early enough, it may find that the dispute is no longer only about what the work was worth. It may be about whether the contractor is still entitled to argue about the value at all.

That is why final account strategy should begin before the final account is submitted. The account should not be treated as a single negotiation document. It should be treated as a structured recovery position, tied back to the contract, supported by evidence and aligned with the procedural steps required to preserve entitlement.

Practical message for contractors

Contractors should establish the final account route before the account is issued. That means identifying the contractual timetable, the required form and content of the submission, the evidence supporting each head of claim, the likely areas of challenge, and the steps required to avoid unintended conclusivity. If adjudication may be needed, the dispute should be framed carefully, the referral timetable should be realistic, and the evidential structure should be capable of supporting the account under adjudication pressure.

The project record should also be organised around the account itself. Variations, notices, instructions, delay records, valuation evidence, site records, defects responses and correspondence should be grouped by issue and connected to the relevant contractual entitlement. Final account adjudication is difficult enough without having to reconstruct the project history after the payer has already taken a procedural position.

This is where many contractors lose leverage. The problem is rarely that there is no claim. The problem is that the claim has not been assembled, preserved and evidenced in a way that can withstand the contractual timetable. By the time the parties are arguing over conclusivity, the contractor may already be fighting on ground chosen by the payer.

Legalbuild’s view

For Legalbuild, Battersea v QFS reinforces a central point: final account disputes are not won by valuation alone. They are won through the combination of contractual timing, procedural discipline, issue framing and evidence. A contractor that treats the final account as an end-of-project commercial negotiation may miss the point at which rights are preserved, weakened or lost. The stronger position is built earlier. The final account should be structured, substantiated and connected to the contract before deadlock emerges. Conclusivity risks should be identified before the relevant period becomes urgent. Adjudication should be used as part of a coherent recovery strategy, not as a rushed response after the procedural position has deteriorated.

That is the difference between having a disputed account and having a recoverable position. Final account recovery depends not only on what the contractor is owed, but on whether the contractual route to recover it has been protected in time.

Case reference: Battersea Project Phase 2 Development Company Ltd v QFS Scaffolding Ltd [2024] EWHC 591 (TCC).