Assessing and managing trees on development sites

We evaluate which trees might be affected during development. We can then provide advice on which trees to remove and which to keep. Finally, we advise on how to protect those to be kept.

The entire process takes guidance from BS:5837:2012 Trees in relation to design, demolition and construction – recommendations.


The phases are as described below (but please contact us regardless of what stage the project is in, as we can often help in some way):

Initial site survey prior to the planning phase (Pre-planning)

We conduct a tree survey and, from that, provide a report with a plan. This helps identify trees to be retained based upon several factors such as their species, condition, visual amenity and estimated life expectancy. The plan illustrates the constraints that the trees would pose (it shows their canopy spread and where roots should be protected, such as from heavy vehicles and direct damage). It also shows which trees are most recommended retaining, which less, and which may need removing.

Surveying trees on a site to be developed
Assessing trees on a site to be developed

Planning Phase:

This is where the proposed development and the current layout of the trees meet, and where the two are merged as best as possible. If a design harms a tree to be retained or if such a tree could negatively affect the development, we work with the engineer/architect to find potential alternatives.

Then we specify contractor and material requirements to prevent construction damage.

If required, an Arboricultural Impact Assessment (AIA) is formulated to communicate how the trees to be retained would be affected and how they would affect construction and structures to any authority or to the client so that they can evaluate if this is acceptable.

innovations for trees on development sites
Examples of innovations for trees on development sites

Pre-Construction Phase

We produce an Arboricultural Method Statement (AMS) which contains the procedures to follow prior to and during construction. It is accompanied by a Tree Protection Plan (TPP) which highlights details such as where fencing or ground protection is to be installed. In communication with the contractor(s) we make sure that the decisions are workable.

Once an agreement is reached by all parties involved, a final version can be made. All tree works are carried out (pruning for access, transplanting, removals) and recommended tree protection measures are installed (fencing and ground cover).

a jcb outside a tree protection zone
Tree protection on a construction site

Construction Phase

We monitor the works either by site visits or direct communication with an appointed site person. We deal with any unplanned issues.

Post-Construction Phase

Only after all construction and landscaping is finished can removal of tree protection measures be carried out. We assess if any issues have arisen, if required.


Example reports and helpful material

If you are unsure of what you require or if you are looking for other tree consultation services, please contact us by phone or email as we may be able to provide the service or we may be able to refer you to someone who can.