What is a heritage tree under Austin ordinance?
A heritage tree is a large tree protected by Austin city ordinance that requires a removal permit before it can be cut down, with size thresholds varying by species.
Under Austin's tree preservation ordinance, a heritage tree is a live tree that meets a minimum diameter threshold and is protected from removal without a city permit. The diameter requirements differ by species: native oak trees (live oak, white oak, chinkapin oak) become heritage trees at 19 inches diameter at breast height (DBH), while most other species reach protected status at 25 inches DBH. Some species like cedar elm and Texas ash have their own thresholds within this range.
Property owners in Austin cannot remove a heritage tree without first obtaining a tree removal permit from the city. This applies on both residential and commercial lots. The permit process evaluates the tree's condition and the reason for proposed removal. Trees that are dead, diseased, or hazardous may qualify for removal more readily than healthy trees. Violations of heritage tree protection rules result in fines and potential legal action.
Heritage tree protections exist because large, mature trees provide measurable benefits to Austin's urban environment and neighborhoods. They offer shade, reduce stormwater runoff, support local wildlife, and contribute to the character of established areas. The ordinance aims to preserve these older specimens while allowing removal when justified by safety or health concerns.
If you need to remove or work with a protected tree, consulting a qualified tree service familiar with Austin's permitting process can help clarify whether your tree qualifies as heritage and what approvals you may need.