A Tree Preservation Order (TPO) is a statutory protection afforded to trees under the Planning Act (NI) 2011, Section 3.
Paragraph 124 of the Act gives the Department powers to make tree preservation orders for the purpose of protecting trees considered to be of special value in terms of amenity, history, rarity, which may or may not be under threat. It also has powers to ensure the continuance of a woodland area by securing the replanting of trees where this is considered necessary.
Trees in Conservation Areas are protected through planning legislation. The extent of protection is as if a Tree Preservation Order (TPO) is in place. DOE has published guidance “A guide to Protected Trees” available online at www.planningni.gov.uk