An Arborist Report provides more details about a tree (or group of trees) and its relationship with the immediate environment than a Tree Risk Assessment does. A Tree Risk Assessment essentially determines the likelihood of a failure to thrive, whereas an Arborist Report notes the overall condition of a tree as well as provides suggestions for future maintenance, retention, or even replacement. Arborist Reports are also regulated by ISA standards and requirements, making them essential aspects of legal processes such land development or construction.