Arborist Inner West
The reason why you need to do this is to improve the health of the trees. Trees are important because they provide shade.
Trees are important, but if you do not take care of them, they can harm your property.
You may want to hire a tree removal company to remove your unwanted trees. You will probably need a permit from the city to do this. Make sure to check with your local government about any special requirements you might have to get the permit.