What It Calculates
Construction cost overrun analysis compares Budget and Actual only when both are present for the same scope. The calculation is Actual - Budget.
| Input | Use | Output |
|---|---|---|
| Budget or BOQ only | Baseline evidence | No overrun calculation. |
| Budget and Actual | Comparable values | Actual - Budget. |
| Actual > Budget | Variance review | Overrun finding with citation. |
The Formula
If Actual is greater than Budget, the result is an overrun. Constrovet keeps it separate from baseline budget.
This prevents contract value, planned spend, BOQ value, work done, or advance recovery from being mislabeled as leakage.
Essential Data Files
- A budget, estimate, BOQ, approved baseline, or planned spend figure.
- An actual, paid, consumed, billed, or incurred amount.
- A source reference showing file, page or sheet, and quoted span.
- Context that identifies the work package, period, item, or project component.
Why Citations Matter
Overrun findings can affect board, lender, contractor, and recovery discussions. Citations make the number reviewable.