Tree Valuation Calculator (CTLA)
Estimate the monetary value of a tree with the CTLA Trunk Formula Method — trunk size, species, condition and location. For consulting arborists.
Inputs
in
$/in²
Estimated appraised value
$9,800
CTLA Trunk Formula Method · rounded to 2 sig figs
Trunk cross-section
314in²
Basic tree cost
$21,991
Trunk area × unit cost314 in² × $70
Species rating× 85%
Condition rating× 70%
Location rating× 75%
Educational estimate only. A defensible appraisal requires a qualified consulting arborist who inspects the tree on site. Unit tree cost and species ratings are set regionally by ISA-chapter Regional Plant Appraisal Committees (RPACs) and can swing the result 2–3×. The CTLA Guide for Plant Appraisal is the authoritative source.
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