How to do project estimation methods?
Break down the scope into smallest work package, components or activities (WBS) Sequence the activities in the order in which they will be performed. Identify the effort required to complete each activity. Identify the resource estimate to complete each task or activity.
How much time should planning take in project management?
Nobelius and Trygg (2002) found front-end activities made up a least 20% of the project time. Similarly, Wideman (2000) states that the typical effort spent in the planning phase in construction projects is approximately 20% of the total work hours.