When a tree permit is required, Public Works posts the notices online. Notices also go out to all properties within 300 feet of the tree - unless there are safety concerns that require immediate removal.
Check out what the Planning Department has under review. Every project that requires a notice will be sent out at least 10 days prior to a decision or meeting to properties within 300 feet of the proposals. Remember, the notices go out to whatever address the County Assessor has on file so remember to keep your addresses updated.