dang, your situation sounds like one a former co-worker went through (in the bay area). one house in an otherwise decent neighborhood causing police activity, increased crime and general ill ease among the neighbors (most of whom were on-site owners).
she and her neighbors dealt with it for a couple of years and finally banded together. they did a free consult with a lawyer to see what it would cost to start proceedings under the California law that lets a property owner sue another for devaluing their property rights and value. the group ended up paying the lawyer to write a letter that detailed their intent to sue, how much the lawyer estimated they could be awarded individually and as a group (California's real estate disclosure laws can cause devaluation of property quite a bit w/ problems like this), estimated legal fees....
best as I can remember it only took 2 letters before the son's of the absentee owner were out and the house was sold
op-as for your original question, not sure-I know someone whose rental was raided (tenants had turned it into a grow house). they didn't find out until the read about it in the newspaper.