The Final Account

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The Final Account

The final account is the formal commercial closure of a construction contract. It reconciles the original contract sum to the final paid value, with a full audit trail of every variation, valuation, set-off, and adjustment along the way. A clean final account is a sign of a well-administered project; a contested final account is the most expensive failure mode in construction.

What goes into a final account

The final account starts with the Original Contract Sum. From there, it adds (or subtracts): all approved variations, EOT cost claims, set-off for defective work, liquidated damages, contract price adjustments (escalation), provisional sum adjustments, prime cost item reconciliations, and any agreed commercial settlements. Each line is back-referenced to the supporting documentation in the contract administration register.

How to avoid final-account dispute

Final account disputes almost always trace back to one of three causes: (a) variations that were not properly documented at the time, (b) ambiguity in BOQ measurement that allowed different interpretations of scope, or (c) EOT claims with insufficient back-up. The QS prevents all three through disciplined real-time administration — not through after-the-fact reconstruction.

Independent verification & audit

Many clients require independent QS verification of the final account before sign-off — particularly on government projects where the final paid value will be reported to Treasury or audit. Cenex routinely performs this independent verification role, providing a second opinion that the principal can defend at audit.

Closure & lessons learned

A well-prepared final account is also a project asset. The element rates achieved, the variation patterns observed, and the contingency drawdown profile are valuable inputs to the next project's cost plan. Cenex feeds final-account data back into the elemental rate library used for future Stage A and B cost plans.