Before construction actually begins, the Location Manager is introduced to the structure and its occupants. This is kind of like a rehearsal for the production phase and it is an important step in the planning, sourcing and logistics.
The pre-production meeting follows a checklist which accounts for general and specific details of the project. If your home was going in for surgery, this would be its pre-op.
This phase may also include a pre-construction meeting with the jurisdictional building inspector.
The pre-con meeting is generally scheduled according to the scope of the project. For smaller projects, it may be 1 or 3 days in advance. For larger projects, it may be a week or more in advance to ensure proper coordination of the construction process.