Which of the following might not be considered a structure for the purpose of a 13645 report?

In the context of a 13645 report, which pertains to the evaluation of termite infestation and damage in structures, understanding what constitutes a "structure" is essential. A structure typically refers to any built entity that is intended for human use or habitation, and is generally considered to have some level of permanence.

Tree houses often do not meet the criteria of a permanent structure because they can be temporary or movable, and they are typically built in trees rather than on a foundation or flat surface on the ground like other structures. In contrast, decks, garages, and patios are considered permanent constructs designed for specific functions, such as outdoor living or storage, and are affixed to the ground or connected to a primary building. This distinction is key when determining which constructions require assessment under the 13645 report guidelines.

Therefore, while the other choices are associated with residential or commercial properties and considered as part of structures, tree houses stand apart due to their temporary nature and unconventional construction, leading to their exclusion from the 13645 report scope.