Which of the following best describes a unit that violates housing and health codes?

The description of a unit that violates housing and health codes is best defined as a residential unit that is uninhabitable. These violations typically arise when a unit does not meet the minimum standards set forth to ensure safety, health, and welfare for its occupants. Issues that render a unit uninhabitable may include significant structural problems, lack of necessary utilities such as water or electricity, pest infestations, or unsanitary conditions. When a unit is classified as uninhabitable, it indicates that it poses serious risks to the health and safety of residents, therefore violating both housing and health regulations.

In contrast, a move-in ready apartment is expected to comply with codes and provide a safe living environment. A unit with minor maintenance issues might still be considered habitable as long as those issues do not pose direct threats to health or safety. Similarly, a property with utilities included does not indicate any violations; it may even be an aspect of a well-maintained unit that adheres to housing standards. Thus, the clear distinction of uninhabitable units rests on their failure to meet essential living conditions as regulated by housing and health codes.