Government Of Counties — California Government Code — Officers — Organization — General — Quorum of board; majority concurrence for acts to be valid and binding Date: 15 Sep 2016 TEXT PDF Current through the 2016 Legislative Session A majority of the members of the board constitute a quorum for the transaction of business. No act of the board shall be valid or binding unless a majority of all the members concur therein. Ca. Gov. Code § 25005