FYI, I have used the SAPD non-emergency number of 227-7201 with very good results. The other night there was loud music from a vehicle, and then from the house 2 doors down. I called SAPD, and they arrived within 30 minutes. They drove into the cul-de-sac with their headlights off, then drove slowly around. They then stopped in front of the house, turned on their spotlight, and looked around. Next, the officer got out of their car and went up to the door.
227-7201, SAPD, non-emergency number...keep it handy!