Verified USA Construction Email Leads

I am looking for a clean, permission-based database of U.S. construction-sector companies for B2B outreach. The file must focus on firms that actively work in construction—general contractors, specialty trades, and suppliers alike—so that I can segment by niche later.

What I need from you:
• A spreadsheet (Excel or CSV) containing, for every record: company name, contact person’s first and last name, role/title, direct work email (no info@ or support@), phone, full physical address, website, and a brief note on the firm’s primary activity.
• Only verified emails with 95 %+ deliverability; hard-bounce or spam-trap entries will be rejected.
• Nationwide coverage—feel free to concentrate on key regions if that improves quality, but avoid duplicates.
• A small sample of 50 leads before full delivery so I can run my own validation.

If you already maintain a live, regularly cleaned list for construction businesses, just confirm how recent the last verification pass was and roughly how many records you can supply. Otherwise, outline your data-sourcing and verification workflow (e.g., ZoomInfo, LinkedIn Sales Navigator, Hunter, NeverBounce).

The final file should arrive ready for import into HubSpot, so consistent column headers and UTF-8 encoding are appreciated. Once I sign off on the sample, we can agree on a delivery timeline for the complete dataset.