I have a court date April 7th in los angeles CA and I am trying to serve the court papers to a property owner whom I am suing. No one ever seems to be at the address I have for him so serving him has been very difficult. What if I am not able to serve him?

Can I mail a copy of the papers via certified mail to the property manager? I am not suing the property manager but she is the only link I have to the property owner since I have never me the property owner.

I know there are timelines that I have to serve the papers so I am wondering if I should change the court date.