I don't know about the filmsf rules specifically, but in general, SF is pretty strict about motion picture and television production overall, and they are also ALWAYS looking for ways to get businesses to pay for the police force, and my understanding that television / movie productions need to pay out for the police presence.
Also, do note that when there is a ball game at AT&T park, roughly half the City is under a TFR. Of course, the Giants won't be playing any post-season baseball this year, so don't worry if your shoot is in October...
I am going to go out on a limb and tell you that there are exactly one-bazillion different regulations governing where you can and can't put up your drone around here. I think out by the ocean beach we still might have some federal wildlife refuge? Can't think of a state park off the top of my head... might be one, might have regulations.
just be sure to do your homework is all i am saying.