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Estimator
Prolongation cost estimator.
A first-pass figure for the time-related cost of a prolongation: your preliminaries run-rate against the length of the delay. Useful to size a position quickly — but read the caveat below, because a real prolongation claim is more than rate × time.
Indicative time-related cost
Enter your preliminaries rate and the prolongation period to see an indicative figure.
Read this before you rely on the number.
This is an indicative time-related (preliminaries) cost only — not a prolongation claim valuation. A defensible claim also turns on: establishing entitlement (an EOT for an Employer-risk event) first; the contract’s valuation basis (usually actual cost incurred in the delay period, not a tendered rate); the actual time-related resources on site during the prolongation (not the average); mitigation and concurrency; and head-office / off-site overhead and finance, which are assessed separately (often via a formula such as Hudson or Emden) and are not in this figure.Indicative only, not legal advice. Establish entitlement and value on actual cost where the contract requires it.
Building a prolongation claim properly?
The difference between a ballpark and a recoverable claim is the entitlement case, the records and the valuation basis. That is the work. Confidential, no obligation.