Not vacant land vacant housing. For example there is a small apartment complex near me that was bought by an out of state investor. They moved their kids into o

Not vacant land vacant housing. For example there is a small apartment complex near me that was bought by an out of state investor. They moved their kids into one unit to keep an eye on the place. The rest of the units they aren't renting out. Why bother dealing with renters when the property value has more than doubled since they bought it?