The term “review appraiser” is used rather than “reviewing appraiser,” to emphasize that “review appraiser” is a separate specialty and not just an appraiser who happens to be reviewing an appraisal. Federal Agencies have long held the perspective that appraisal review is a unique skill that, while it certainly builds on appraisal skills, requires more. The review appraiser should possess both appraisal technical abilities and the ability to be the two-way bridge between the Agency's real property valuation needs and the appraiser.

Agency review appraisers typically perform a role greater than technical appraisal review. They are often involved in early project development. Later they may be involved in devising the scope of work statements and participate in making appraisal assignments to fee and/or staff appraisers. They are also mentors and technical advisors, especially on Agency policy and requirements, to appraisers, both staff and fee. Additionally, review appraisers are frequently technical advisors to other Agency officials.