Drug use? There is likely no liability to the the homeowner.
Now...more than use? If they are selling or manufacturing drugs in the home?? Then you have a different story.
Under federal and state asset forfeiture statutes, if you let someone use your home, and they are selling or making drugs from the home, then the state can take steps to attempt to sieze and sell the home.
You can defend this...or try to. To take your home, the police would need to prove that you new that this was going on and permitted it. So if there was an arrest for distribution or manufacturer of drugs, and they attempt to take the home, you can show you had no idea that that this was going on you may be able to save the home. THe problem you face is that asset forfeiture proceedings under state and federal law are not like a criminal trial. The bunden of proof is preponderance (more likely than not). SO it is easier for the state to prove knowledge...so easier for them to seize and sell the property.
BotXXXXX XXXXXne: Use? Not an issue for asset forfeiture laws. But distribution/manufacture? That is certainly a potential problem
The other potential problem would be tort
liability. If someone is injured at the property because of drug use? Then as the homeowner you are potentially liable for the injury. THe standard is similar...they person who was injured would have to prove that you knew and approved of the illegal drug use and that because of the drug use they were injured. But if they can prove that, it is possible you could be held liable for injuries resulting from drug use