Here’s a common Project Manager story:
You, the Project Manager is creating the budget for your project. Your high level WBS (Work Breakdown Structure) is ready and you have the high level estimates needed for a budget baseline.
As a smart Project Manager, you will add a contingency (20-25%, which is common practice nowadays) to account for unknown events that may add to your cost. In that way, you save your project from going over budget. So far so good.
It seems like you have done your due dili