NEC4 · ECC Option C 11.2(26)
Disallowed Cost
Cost the Project Manager removes from Defined Cost, such as cost not backed by records or caused by a missed early warning. It is left out of the amount due.
“is not justified by the Contractor’s accounts and records” (11.2(26))
On the Aldermere project
Dana's check of the four weeks to 29 June 2026 found Disallowed Cost of GBP 10,000.
Where you meet it
- Module 3: How Option C pays youPractitioner Course
- Module 5: Early warningsPractitioner Course
- Module 11: Defined Cost, the Schedule of Cost Components and Disallowed CostPractitioner Course
- Module 0: Key terms and the money mapPayment and Defined Cost · Free
- Module 1: How the ECC paysPayment and Defined Cost · Free
- Module 4: Defined Cost, the Fee and the Schedule of Cost ComponentsPayment and Defined Cost
- Module 5: PeoplePayment and Defined Cost
- Module 10: Disallowed Cost, ground by groundPayment and Defined Cost
- Module 11: Records, audits and clawbackPayment and Defined Cost
- Module 9: Compensation events: assessment and proofCase Law
- Module 4: Early warning and advance warningNEC4 vs FIDIC 2017
- Module 9: Subcontracting and securityNEC4 vs FIDIC 2017