3EH Advisory
How long does a feasibility study take — and what does it cost?
There is no credible universal price or duration. The correct scope depends on the investment decision, project complexity, evidence quality and depth of verification.
Reviewed by Prof. Dr. Gökhan Gündüz · Updated 9 August 2026
Preliminary screen
Days rather than weeks when the objective is to identify blockers and evidence gaps.
Focused feasibility
Usually several weeks for a defined technical or investment question.
Complex study
Longer when multidisciplinary verification, site work or deep modelling is required.
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