Someone else bought our house with stolen money.

What to do with the house bought with stolen money depends on the situation. If you don't know that it is stolen money, there is no criminal intent, and it does not constitute a crime, but you need to return the stolen money. If you know that it is stolen money, it constitutes a cover-up and concealment of the facts of the crime. If it is determined that stolen goods need to be returned, the house needs to be sealed up and auctioned, and the proceeds from the auction need to be confiscated or returned.

Legal objectivity:

criminal law

Article 64

All property illegally acquired by criminals shall be recovered or ordered to make restitution;

The lawful property of the victim shall be returned in time;

Contraband and personal articles used in crimes shall be confiscated. Confiscated property and fines shall be turned over to the state treasury and shall not be misappropriated or disposed of by themselves.