Why plan holders matter to suppliers
When a contractor pulls the plans for a project, they are telling you two things: they intend to bid, and they will need pricing. The plan holder list is the earliest reliable signal of who will actually buy materials for that job. Waiting for an invitation to quote means the contractor has already built most of their supplier list. Seeing the plan holder list first lets you start the conversation while they are still figuring out who to buy from.
