Answer a few questions about your project. We model the cost risk with a Monte Carlo simulation and show the exact percentile your contingency covers. Free, private to your browser, and precise.
Add or adjust exposures on the left. Results update as you go.
Get this model as a branded CostWitness report, and open a private space to share drawings and specifications for an independent read before your GMP locks in.
Every card opens a working calculator. Free, no account needed to start.
Rank your exposures by dollar impact, run a Monte Carlo simulation, and see the exact percentile your contingency actually covers, with a branded report to print.
Open the tool Score out of 100Pre-GMP Readiness ScoreSix plain questions on price, allowances, contingency, schedule, interfaces and clarifications. Score how ready your GMP package is to sign.
Open the tool The patternCost Influence CurveSee where the project sits on the cost influence curve, and how much power over cost you still have before the window closes.
Open the tool By causeChange Order ExposureOpen items by cause classification. Output: owner cost and contractor cost, split, with the unclassified value shown in the flag color.
Open the tool Your rates, not oursEscalation and Market RiskUnbought packages by US region with the escalation rate you enter. Output: exposure on the unbought scope against the escalation allowance carried.
Open the tool Critical pathSchedule Risk versus FloatCritical path activities, float in days, monthly general conditions. Output: how many activities carry zero float and what a month of delay costs under the contract.
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