An arborist report is a professional report, written by a certified arborist, that describes the health and condition of a tree. It will address the size, location, health and condition of the trees, including details of any problems. For example, it states if there is damage to the tree or if the tree is a safety hazard in any way. The report will recommend any remedial action that you should take to preserve or improve the health of the tree. In some cases, the arborist report will recommend the removal of the tree.
If you need an arborist report because you are applying for a tree removal permit, an arborist report will include a site plan and/or planting plan for replacing trees. If you have asked for an arborist report because you are planning construction or landscaping work, the arborist report will also include recommendations for measures that need to be taken to protect other trees whilst work is being carried out.