Council is responsible for managing trees and vegetation on public land, but ownership of a tree does not create an automatic liability on the Council for damage caused by roots or branches. Liability generally depends on whether Council was negligent or failed to act on a known risk.
Damage caused by a Council tree
Council trees are inspected regularly subject to the availability of its staffing resources, to monitor their condition and safety. These inspections assess key indicators such as overall health, canopy structure, branch stability, signs of decay, pest or disease presence, and any root plate movement. If Council is notified of a potential hazard or nuisance, an additional inspection will be carried out.
Claims for damage caused by trees are assessed based on negligence and will only be accepted where Council has a clear legal liability.
Structural damage caused by tree roots
Tree roots grow towards areas where they can access moisture, nutrients and suitable soil conditions. When these resources are available, roots will naturally expand and develop more extensively. Tree roots can sometimes cause damage by exerting pressure on structures like concrete pavements, walls, underground pipes and buildings with inadequate foundations. However, structures such as paving and walls can crack for many reasons. If you believe a Council tree is causing damage to your property, you must provide sufficient evidence to support your claim.
For more information, please visit Trees & Infrastructure - Hobsons Bay
- Blocked stormwater pipes caused by tree roots
Tree roots generally enter sewer or stormwater pipes only if those pipes are already cracked or damaged. When pipes are correctly installed and properly maintained, it is very rare for tree roots to crush or crack them. Council is responsible for the local stormwater drainage network including pipes and pits on public land, but not for private stormwater pipes that connect to the legal point of discharge (LPOD). Property owners are responsible for maintaining, repairing, and replacing pipes up to the LPOD or sewer connection point.
If you believe a Council street tree has caused a blockage, you must provide evidence along with a completed Incident Notification Form. Evidence should include:
- clear details of the damaged pipe, including its material and location (mark the spot with an ‘X’ if possible)
- clear images and/or CCTV drain inspection footage showing the damage and the point where roots entered
- in cases where the origin of the roots is unclear, identification by a qualified professional may be required.
For more information, please visit Trees and nature strips - Hobsons Bay.