A tree inventory is a listing and description of trees and planting sites. It can be sample, partial or complete , depending on its purpose. It can be handwritten, typed, or computerized.
Any inventory is better than none, but computerized inventories are best in the long run.
Inventories permit better hazard reduction, budgeting, and work planning. Every inventory includes at least address, species, size, condition, hazard potential, and necessary maintenance work. Its information is usually highly detailed and very accurate. The information is usually less detailed and less accurate, and hazardous trees must still be examined by a certified arborist. All inventories need to be updated periodically through ground inspection.