A pre Plaster (Lock-Up) inspection is the last chance the timber frame can be inspected prior to the plaster or wall linings being installed.
Pre Plaster Inspections
Pre Plaster Building Inspection
The lockup stage refers to the point in time where you’re able to effectively ‘lockup’ the house. This is normally when all the windows and exterior doors are on (and typically, but not necessarily, the garage door).