Planning & Development: Tree Survey & Tree Constraints Plan
We will advise on the appropriate level of tree survey, detail and site information required to suit your development - depending on the quality, condition and significance of existing trees and the scale of the proposal.
Do I need a Tree Report?
Technical details, planning conditions and obligations?
The tree information required by LPAs at validation stage typically includes the type of tree, age class, condition and quality, and some simple measurements. Many LPAs reference: BS 5837:2012 Trees in relation to design, demolition and construction - Recommendations. That said, homeowners maybe don’t need a professional tree survey for simple planning proposals….
Above ground tree data
measuring trees isn’t rocket science, BUT knowing where to focus and investigate further takes experience.
The stem diameter measurement informs the below ground Root Protection Area [RPA] - initially plotted as a circle with a radius of stem diameter x12. For example, a tree with a 1m stem diameter requires a radial RPA of 12m. The RPA should reflect a realistic assessment of likely root distribution, based on science, skill and experience. Very rarely do trees root symmetrically. Root growth and distribution is tree & site specific. BEWARE the fast, cheap survey data that provides only circular RPAs.
Root Protection Area
the default radial RPA is basically calculated as stem diameter x12
The Tree Survey data is plotted on a Tree Constraints Plan [TCP], which aids the design process and allows early understanding of the key issues, constraints and opportunities.
tree constraints plan
the TCP shows site specific information and future growth requirements
