Trees are a common cause of disagreement between neighbours. Disputes can be about:
branches overhanging the fence
branches or fruit dropping into the yard
roots causing damage to the property
branches blocking sunlight from solar panels or TV reception
trees that are dangerous or hazardous.
The Neighbourhood Disputes (Dividing Fences and Trees) Act 2011 is the law that governs these issues. This is a Queensland state law and disputes are decided by the Queensland Civil and Administrative Tribunal (QCAT).
Logan City Council has no authority to deal with disputes about trees.
It is always best to resolve any issues about trees or fences directly with your neighbour, without involving mediators, lawyers or QCAT. It will be quicker, cheaper and more beneficial to you and your neighbour if you can resolve the problem yourselves.