Plenty of spots to fly in OC especially, HB, Newport Beach, Dana Point. There are no airspace restrictions and cool stuff to shoot. Download the App AirMaps. That will help you with airspace locations
you don't need permission to fly over someones property. People don't own the airspace. If you are not breaking any airspace rules or got permission from the ATC, then your all good. But if you are hovering over someones property and be creep then they could get you for invasion of privacy but...