Who is ultimately responsible for the scope of work decision?

The appraiser is ultimately responsible for the scope of work decision because it is their professional duty to define and outline the extent of the appraisal process based on the requirements of the engagement and the intended use. The scope of work involves determining the necessary research, analyses, and methodologies that will be employed to produce a credible appraisal. This decision is guided by the ethical and professional standards set forth in the Uniform Standards of Professional Appraisal Practice (USPAP), which emphasize the appraiser's independence and professionalism.

While the client and intended users may have input or preferences regarding the appraisal, it is the appraiser who must analyze these needs and ensure that the chosen scope of work aligns with industry standards, meets the intended use, and provides a sufficient basis for the appraisal conclusion. Peers might serve as a source of advice or feedback, especially in more complex assignments, but they do not hold the responsibility for the scope of work. This role reinforces the importance of the appraiser's expertise and judgment in the appraisal process.