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Arboriculture & Urban Forestry Online
Volume 31, Issue 4 — July 2005

Tree Appraisal: Chronology of North American Industry Guidance    (View PDF)

Scott Cullen

Abstract: Various individual tree appraisal methods emerged during the first half of the 20th century. Development of North American industry consensus methods was undertaken in 1947. These methods have been refined and elaborated, and additional guidance has been provided in subsequent revisions. Appraisers and appraisal users, however, are not always aware of the most current methods and guidance and may, unknowingly, rely on outdated versions. The purpose of this paper is to provide an accurate and quick reference to the chronology of North American industry-wide consensus methods and guidance for tree and plant appraisal. The differences among methods, guidance, and standards are also explained.

Keywords: Appraisal; appraisal guides; tree appraisal; valuation

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