I am preparing to send a California 20-day Preliminary Notice . to a large business as an Electrical Contractor in Ca. I am working with them direct, no Lender, no general, they said they are paying out of their company , we are upgrading their main service to 2000amps. I have a signed proposal for $ 235,248.00. We are starting this project on Monday 8-17-2020. I will be sending the notice by certified mail to the Business . No Lender or no General. I My question is don,t I need to send a copy to City Hall for recording ? or am I ok by just sending to the company that hired me ? Thank you Ron