The function for evaluating a tree is somewhat complex. But there are commonalities between most tree evaluating formulas used by arborists. People viewing your property at an open house may not use such a complicated formula and might instead opt for relying on how nice the tree looks.
Tree value ($) = base value x cross-sectional area x species class x condition class x location class base value.
This represents a dollar amount assigned to one square inch of a tree’s trunk cross-sectional area. This number is typically based on the cost of the largest available replacement plant for your same species.
Cross-Sectional Area: This is a measurement of the trunk. It’s measured one foot above ground level for trees with trunks up to 12 inches in diameter above ground for trees with trunks greater than 12 inches.
Species Class: This is an assigned value based on merit. Factors involved in this classification include form, growth habit, flowering and fruiting characteristics, structural strength, longevity, insect and disease resistance, and maintenance requirements
Condition Class: This section takes into account the observed condition by examining factors such as wounds, decay, storm damage, insect, disease damage, and poor form.
Location Class: This factor focuses on the functional and aesthetic contribution the tree makes to a site and the importance of the location in the context of a broader community.
Now that you know all these factors, you can estimate the approximate value of any existing trees, and maximize where you’ll plant any new ones.