From start to finish, foreclosure can take many months. The process ends with an auction sale and a demand telling the homeowner to leave the property. The notice sets out how long you have to leave, typically between five and 30 days.If you don't leave by the deadline, the new owner can get an eviction order and the sheriff will forcibly remove you from the home.viction After Foreclosure. After the public seller the homeowner receives a notice to vacate the property within, typically, five and 30 days. If you do not leave within that time time frame, a court may order an eviction notice.