What do we call an act or structure that is a nuisance at all times and under all circumstances?

A structure or act that is considered a nuisance at all times and under all circumstances is classified as a nuisance per se. This term refers to activities or conditions that are inherently harmful or bothersome, regardless of the situation in which they occur. For example, certain criminal acts or inherently dangerous activities fall into this category because they violate community standards or legal norms simply by their nature, and not due to specific circumstances or context.

In contrast, other concepts, such as nuisance in fact, refer to conditions that may only be considered nuisances under specific circumstances or environments. Intentional and unintentional nuisances relate to the intent behind the actions causing disruption, but do not apply to the overarching classification of nuisances that are universally intrusive or harmful. Thus, nuisance per se uniquely identifies actions or structures that are disruptive at all times, establishing its authority in legal discussions and classifications of nuisances.