There is a statutory duty under the Town & Country Planning Acts for local planning authorities to consider the protection of trees when planning applications are made. It is therefore a requirement of the Local Authority to ask for a tree survey to be submitted with a planning application, even if trees are not actually located on the site itself. The purpose of the BS5837 tree survey is to determine whether a development will have an impact on important trees within the landscape. The report will consider all trees on site and provided accurate information relating to the quality of the trees and the extent of their canopies and root systems. Accurate information may enable the developer or applicant to be made aware of any issues that may require alterations to be made to a layout or even prevent the development of the site.