I've already set up a lien notice for the original contract amount and added 1 approved change order to that total that was approved before project started. we have several more change orders that have been signed and are in progress now that the job is in progress. Can I set up one lien notice for multiple change orders or do i need set up one lien notice for each change order?
In California you are only required to serve preliminary notice once per contract, even if there are change orders. As long as the preliminary notice reflects a reasonable estimate of the cost of the work at the time it is sent, it is effective for the duration of the contract. So no need to send additional preliminary notices. But if you are going to do so, one reflecting all change orders to date is more than enough.