We look forward to helping you get the information you need! We can be reached at any of our Builders Exchanges, or at our Virtual Plan Room or at our CalBX Direct service.

How to Contact Us:

Virtual Plan Room Network

Computer/Software Help

For technical assistance Monday – Friday, 8am – 5pm, our Builders Exchange staff and Virtual Plan Room Network staff are available to help.  Email AskMe@calbx.com or call toll free 844-99-CalBX (844-992-2529) or your Builders Exchange.

(Remember to check out the information we’ve posted to our Support Center, too!)

Plan Room Data / Jobs Bidding Documents Help

For questions, comments, get added to bidders list or other job reporting help, our Plan Room staff is ready to assist Monday – Friday, 8am – 5pm. You can email us at Editor@calbx.com or call toll free 844-99-CalBX (844-992-2529).


CalBX Mailing Address

Data / Job Documents: 2440 Stanwell Drive, Concord, CA  94520

Corporation Address:  1331 T Street, Sacramento, CA  95811

Our Builders Exchanges

Bay Area Builders Exchange
Phone: 510-483-8880

Central California Builders Exchange
Phone: 559-237-1831

North Coast Builders Exchange
Phone: 707-542-9502

Sacramento Regional Builders Exchange
Phone: 916-442-8991

Valley Contractors Exchange, Inc.
Phone: 530-343-1981