Once planning permission has been granted, it is common for the Local Planning Authority to impose conditions requiring a detailed tree survey and the submission of an approved Arboricultural Method Statement (AMS). This ensures that existing trees — particularly those protected by Tree Preservation Orders or located within Conservation Areas — are properly safeguarded throughout the construction process.
Trees are often significant landscape assets, contributing not only to visual amenity but also to biodiversity, screening, microclimate and property value. Construction activity, however, presents considerable risks. Damage to roots, soil compaction, changes in ground levels or the improper storage of materials can all lead to long-term decline or failure. The AMS provides a structured framework to mitigate these risks.
The Arboricultural Method Statement will typically address:
- Protective fencing specifications in accordance with British Standards (commonly BS 5837), including the positioning of Root Protection Areas (RPAs).
- Preliminary tree works, such as agreed pruning or remedial surgery, carried out prior to commencement.
- Ground level alterations, including any regrading or excavation within proximity to retained trees.
- Movement of plant and heavy machinery, with defined exclusion zones to prevent soil compaction and root damage.
- Installation of underground and above-ground services, often requiring specialist techniques such as air spading, hand digging or trenchless methods.
- Material storage and site compounds, ensuring that no construction materials, spoil or hazardous substances are stored within protected areas.
- Site cabins and welfare facilities, carefully located to avoid root disturbance.
- Access routes and road construction, potentially incorporating no-dig or load-spread systems where construction occurs near retained trees.
Adherence to the approved Arboricultural Method Statement
Adherence to the approved AMS is frequently a formal condition of planning consent. Failure to comply can result in enforcement action by the Local Authority, including financial penalties, stop notices or, in serious cases, prosecution. Non-compliance may also invalidate aspects of planning approval and cause costly delays.
For these reasons, it is essential that the AMS is both robust and practical. It must strike a careful balance between the operational requirements of contractors and developers, and the statutory obligations imposed by the Local Authority. An unrealistic or overly restrictive document can hinder construction unnecessarily, while an inadequate one risks enforcement action and irreversible tree damage.
Early engagement between the project team, arboricultural consultant and planning authority is therefore critical. A well-prepared AMS not only protects valuable landscape assets but also provides clarity and confidence during the build process — ensuring that development proceeds smoothly while safeguarding the long-term health and integrity of the site’s trees.
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