The denominator policy covers both the drafting of tree policy as well as the evaluation and revision of existing policies. A tree policy is as a guide for a longer time period in which frames are set for the everyday management of trees.

Besides an orientation in which the past, starting point, conditions and assumptions are described, the services concerning policy are the Trees Effect Analysis (TEA) and the writing, taking inventory or updating the register of valuable or monumental trees. Drafting or updating the register of valuable and/or monumental trees is usually related to a change in local policy regarding the felling permit or all-in-one permit for physical aspects.