Understanding Dangerous Trees: A Matter of Safety and Responsibility

Trees are an invaluable part of our landscapes — enhancing biodiversity, improving air quality, and contributing to the character of rural and urban environments alike. However, when a tree becomes damaged, diseased, or unstable, it may pose a serious risk to people and property. Identifying and managing these dangerous trees is not just a matter of good practice — it’s a legal responsibility.

Legal Obligations for Landowners

Under the Roads Act 1993, landowners and occupiers are required to take all reasonable steps to ensure that trees or other vegetation on their land do not endanger users of a public road. If a tree is deemed hazardous, local authorities have the right to issue notices requiring action, such as cutting back or removing the tree.

This legal framework highlights the importance of regular tree inspections and proactive management — not just in the interest of public safety, but also to protect landowners from liability.

What Makes a Tree Dangerous?

A tree may become hazardous for various reasons, including:

• Structural defects (e.g. cracked limbs, weak forks, root instability)
• Decay or disease affecting the trunk or roots
• Storm damage or previous improper pruning
• Overhanging roads, footpaths, or properties
• Dead or dying branches that may fall unexpectedly

While some of these issues are obvious, others can remain hidden without a detailed inspection — making a professional tree condition survey essential.

Rethinking Tree Risk: It's Not Just About the Tree

One of the most important principles in tree safety management is understanding that tree condition is only part of the picture. As counterintuitive as it may sound, the first consideration should be how the surrounding land is used.

• Is the area heavily trafficked by pedestrians or vehicles?
• Is it public or private space?
• Are there structures, roads, or rights of way nearby?

By starting with a risk-based approach — looking first at the potential targets — tree managers can prioritise inspections and interventions more effectively. This principle ensures a balanced strategy that minimises risk while preserving the many benefits trees provide.

The Role of a Tree Condition Survey

A professional Tree Condition Survey assesses the health and structural stability of trees in relation to their surroundings. It provides:

• Clear, evidence-based guidance on whether a tree poses a hazard
• Practical recommendations for maintenance, monitoring, or removal
• Peace of mind for landowners and duty holders
• Documentation that may be useful in demonstrating due diligence

These surveys are especially useful for farms, estates, schools, business parks, and roadside properties — anywhere trees and people interact regularly.

‍

For a deeper look into how condition surveys work and how they can support compliance and safety, visit our Tree Condition Survey, Dangerous Trees page >

‍