A "vacant house" refers to a house or building that is not currently being used or inhabited by anyone. It is empty and available for rent or purchase. Full definition
My favorite and most effective method for finding owners of vacant houses is to talk to the neighbors on either side of the subject property and perhaps the neighbor across the street. (biggerpockets.com)
Home insurance policies for vacant houses does not require to hire a person always from the property management firm. (blog.agentinsure.com)