What is the definition of depreciation in real estate?

Depreciation in real estate is commonly understood as the loss in value from any cause. This encompasses various factors that could lead to a decrease in the property's market value over time, such as physical wear and tear, economic downturns, changes in the surrounding neighborhood, or functional obsolescence.

For instance, a building may lose value due to outdated features that are no longer in demand, or a property's location may decline due to surrounding developments that hinder its appeal. Understanding depreciation is crucial for appraisers and real estate professionals, as it helps in accurately assessing property value and determining appropriate pricing strategies.

In contrast, the other options represent concepts that do not align with the true definition of depreciation. An increase in value over time describes appreciation, while maintenance of property value refers to actions taken to preserve or enhance a property's worth, not a loss in value. Lastly, the idea of value unchanged by improvements contradicts depreciation, as it suggests stability or increase rather than decline in property value.