(1) Every building or unit within a building used for the purpose of unlawfully manufacturing, delivering, selling, storing, or giving away any controlled substance as defined in chapter 69.50 RCW, legend drug as defined in chapter 69.41 RCW, or imitation controlled substances as defined in chapter 69.52 RCW, and every building or unit within a building wherein or upon which such acts take place, is a nuisance which shall be enjoined, abated, and prevented, whether it is a public or private nuisance.

(2) As used in this chapter, "building" includes, but is not limited to, any structure or any separate part or portion thereof, whether permanent or not, or the ground itself.