For manufacturers' representatives
Get specified before the contractor is chosen.
Your window closes when the subcontractor is selected. The prediction axis opens it earlier: the likely firms are known from the general contractor's own hiring history, before any award.
Practical next step
Use the public timeline to identify a project worth researching, confirm the current permit with the issuing authority, and apply your own commercial qualification before outreach. The page describes a workflow for this role; it does not promise access to a specific job or decision-maker.
Why the evidence remains local
Permit labels, filing habits and project timing vary by jurisdiction. A frequency shown for Philadelphia is evidence for Philadelphia and its stated sample, not a performance claim for another market.