In summary: Housing associations sometimes avoid undertaking tree surveys out of concern that they will uncover unaffordable works. While understandable, this approach increases rather than reduces risk. Trees exist across the estate whether they are formally recognised or not, and the legal expectation is not perfection but a reasonable system for understanding and managing that risk. A tree survey does not create a problem. It provides visibility, allowing risk to be prioritised, managed proportionately and aligned with wider asset strategy.
It is not uncommon to hear housing associations say that they have never undertaken a tree survey. The reasoning is often because there is a concern that commissioning a survey will identify a significant volume of work, and that work will carry a cost for which there is no budget. The result is a conscious decision not to look too closely.
While understandable from a short-term budget perspective, this approach tends to increase risk rather than reduce it.
Trees sit across the entirety of the housing environment. They are not confined to obvious green spaces or managed landscapes. They exist within communal areas, along boundaries, within tenant gardens and on retained or overlooked land. In many cases they are not formally recognised as part of a structured asset base. That lack of visibility is where difficulty begins. If trees are not properly understood, they cannot be properly managed. When they are not managed, decisions become reactive, and it is within that reactive space that both cost and liability tend to increase.
The legal position does not require housing associations to eliminate all risk associated with trees. Trees are natural structures and some degree of unpredictability will always exist. What the law requires is reasonableness. In practice, that reasonableness is assessed by reference to whether there is a system in place to understand where trees are located, to inspect them at appropriate intervals and to respond to identified risks in a structured way. Liability in tree-related matters rarely arises from the presence of a tree itself. It arises from a failure to manage risk in a reasonable and proportionate manner. Choosing not to undertake a survey makes it difficult to demonstrate that any such system exists.
There is often an underlying assumption that identifying issues creates obligation. In reality, risk exists whether it is identified or not. The difference lies in whether the organisation can demonstrate that it has taken reasonable steps to understand and manage that risk. Without a survey, risk remains unknown and unmanaged. There is no framework for prioritisation and little evidence to support decision-making. With a survey, risk becomes visible, can be categorised and can be addressed in a controlled and proportionate way. A survey does not create risk. It provides clarity.
Another common concern is that a survey will produce an unmanageable list of immediate works. That is not the purpose of a well-structured survey. A properly designed approach allows risk to be stratified. Not all trees require intervention and not all issues require urgent action. A survey should support prioritisation, distinguishing between high, medium and low-risk matters. It allows housing associations to focus attention where it is most needed, particularly in higher-use areas such as footpaths, car parks and communal spaces, while managing lower-risk areas over time.
The financial dimension is also important. Avoiding a survey is often framed as a way to control cost. In practice, it tends to shift cost rather than reduce it. Without a structured approach, organisations are more likely to encounter reactive scenarios such as emergency works following tree failure, personal injury claims, subsidence investigations or escalating neighbour disputes. These situations are rarely cost-effective and are often more disruptive than planned maintenance. A survey enables a move towards planned, phased management, allowing expenditure to be aligned with risk and budget over time.
Trees also interact with the built environment in ways that are not always immediately visible. Without a clear understanding of tree stock, it is difficult to assess proximity risks to buildings, to respond early to potential subsidence issues or to align tree management with wider asset and insurance strategies. Trees, property and claims exposure are closely linked. A lack of visibility in one area tends to create pressure in another.
A more useful way to approach this issue is to move away from avoidance and towards control. Tree management is not about eliminating risk entirely. It is about understanding that risk and managing it in a way that is proportionate, defensible and consistent with the way the estate operates. That process starts with visibility.
For housing associations who have not yet undertaken a survey, the answer is not to attempt to do everything at once. A proportionate approach may involve establishing a baseline understanding of tree stock, focusing initially on higher-use areas and implementing a phased inspection programme. Over time, this can be integrated into wider asset management systems, allowing the approach to develop in a structured way.
Avoiding a tree survey may feel like a way to defer cost. In reality, it removes visibility, weakens the organisation’s position and increases the likelihood of more complex and expensive issues emerging later. A survey does not create a problem. It allows the organisation to understand what already exists and to manage it properly.
If this is a position your organisation recognises, the answer is not to move from no visibility to a fully resourced programme overnight. A more effective approach is to start with clarity and structure.
At Tree Law, we work collaboratively with arboricultural consultants to help housing associations understand their tree stock in a way that is practical and proportionate. By combining legal insight with arboricultural expertise, we support the zoning of risk across estates, allowing limited resources to be directed where they are most needed.
This approach moves the conversation away from volume of works and towards prioritisation, defensibility and control.
If it would be helpful to explore how this could work in practice, we would be very happy to have a conversation. Contact us today at hello@treelaw.co.uk
