The three types of depreciation INCLUDE physical deterioration, external obsolescence, and

Non-conforming value refers to properties that do not meet current zoning or building standards, which may negatively impact their marketability. However, this term does not directly relate to the concept of depreciation as it does not encompass the physical or economic deterioration of an asset over time. Instead, it describes a specific condition affecting a property’s compliance with regulations.

Regression is a principle in real estate appraisal that suggests the value of a superior property may decrease when located near inferior properties. While it can impact property value, it is not classified as a type of depreciation. Regression focuses on the external factors affecting value rather than the intrinsic depreciation of an asset itself.

Progressive deterioration is not a standard term in depreciation categories. Instead, it would imply an ongoing decline in condition, which can be part of physical deterioration. However, it does not represent a distinct type of depreciation recognized within real estate or asset valuation frameworks.