Those valley oaks are pretty and have nice shade during the summer but that “self pruning” tendency is deadly. I lived in fear of the ones next to the place we were living in Visalia. The one behind the garage that hung over it I KNEW was going to kill me. It had shed two other HUGE branches and luckily it was away from the house and garage. The worst for them was on hot still days. One huge branch pointing away from the garage let go while I was in checking my computer. All the neighbors came out because it felt like an earthquake. Two houses down, another hot still day, neighbor was in her potting shed under a huge oak went to the other end of the shed and a huge limb came down and crushed that end of the shed and killed her goats and trapped her in the other end of the shed.
3mo after we moved a big limb crushed what was our bedroom and bath. I don’t think the renters were home thank god.