Which scenario necessitates careful review by an appraiser according to USPAP?

When an appraiser is faced with a highly unique property, it necessitates careful review due to the distinctive factors that may influence its value. Unique properties often lack comparable sales data, making it challenging to arrive at an accurate valuation. In these situations, the appraiser must consider specialized approaches, such as cost or income approaches, and thoroughly analyze relevant details about the property itself, the surrounding area, and market trends.

Additionally, the appraiser has to apply a higher degree of judgment and expertise when determining value, which might include accommodating atypical characteristics, regulatory issues, or environmental factors that are not present in more standardized properties. This careful approach ensures that the appraisal is credible, consistent with the principles set forth by USPAP, and serves the needs of the intended users effectively.

In contrast, while changing ownership, serving corporate clients, or employing multiple reporting formats might pose challenges, these scenarios typically do not require the same level of heightened scrutiny as a unique property does, since they may not inherently affect the valuation methods or the quality of the appraisal as directly as unique property characteristics do.