The site walk is the conversion event, so book it on the first call
Almost nothing in this sale converts as reliably as getting a manager physically inside the building, and almost nothing is delayed as casually.
Treat the objective of the first conversation as a scheduled walk, not a proposal request. Boards comparing firms on paper compare on price. Boards that have walked a mechanical room with you compare on competence.
Make the offer specific and near. A named manager, a date this week, forty five minutes. A vague promise to send something over is where most of these conversations end.
Measure the interval between first contact and walk booked, then between booked and walked. Both numbers move with simple scheduling changes, and both are invisible until somebody writes them down.
In a tower, access is its own obstacle. Confirm who lets you in, whether the building engineer needs notice, and whether the board wants a member present. Sorting that on the call prevents the rescheduling that kills momentum.