Have a question about information posted to a job, or a technical issue with the software?

For technical questions about the software or how to make something work, check out our Support Center or get help here:

Call 1 (925) 685-8630 during regular business hours from 8:00 a.m. to 5:00 p.m. Monday through Friday (PT) or email askme@calbx.com.

If you encounter a technical crisis after hours or just need to contact us now, our Technical Support team is on standby to help.

Email us at 911@calbx.com and we’ll contact you as soon as possible.

Please be patient – it might take a few minutes for us to respond but we will get back to you!

For questions about how bidding documents are posted, contact our central Plan Room, or check in with the friendly staff at any of our Builders Exchanges.

Call toll-free 844-99-CALBX (844-992-2529) during regular business hours from 8:00 a.m. to 5:00 p.m. Monday through Friday (PT) or email our Plan Room.

There are times when providing technical support that our team may need to “Glance” over your shoulder and see your computer screen.

If you have been instructed to initiate a “Glance” session, please click on the following link vbx1.glance.net to start the process.

Corporate Offices

Concord Corporate Office
2440 Stanwell Dr.
Concord, CA 94520
Phone: (925) 685-8630
Fax: (925) 685-3424


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