Business Office: 4498 Lawson Ct.
(925) 687-9961
Security: (877) 900-1110



CHOA produces two newsletters to help residents stay informed of news and events in the community. The Signal is an eight-page hardcopy newsletter hand delivered monthly to every doorstep by volunteers. The eSignal is an email-only newsletter sent about every ten days with more current information and often different articles than the Signal. The eSignal is also sent as necessary for breaking news or any issues requiring immediate outreach.

To signup for the eSignal, scroll to the bottom of this, or any page on the site, and locate the box in the lower right. Enter your email address and follow the steps to signup.

Signal Archives

Older issues of the Signal are added to this section as they become available electronically.

Older issues of the eSignal are added to this section as they become electronically available.