In Tacoma, a "party house" suffered an arson attack recently. The theory/rumors, etc., are that it was a neighbor, pissed off with the constant noise, traffic, etc. The home is right by the Narrows bridge, views, etc., and rentable.
The other part of the theory is since it is owned by a former NFL player (and a Seahawk, at that), that local police were reluctant to rock the boat too much. Neighbors got frustrated, and well, maybe?