What characterizes an abandoned building?

An abandoned building is characterized by having fallen into disrepair, which often occurs when a structure is no longer occupied or maintained by its owner. This lack of upkeep can lead to structural damage, safety hazards, and deterioration of the property's condition.

In contrast, the other options present scenarios that do not fit the definition of an abandoned building. Actively maintained properties are regularly cared for and thus cannot be considered abandoned. New constructions are typically in the process of being finished or actively managed, which also rules them out as abandoned. Lastly, zoning for commercial use refers to the legal classification of land use, which does not directly relate to the occupancy or condition of a building—elements central to defining abandonment.