Sustainability is often discussed in education as a long-term ambition, linked to net zero targets, new technologies and future investment. For many schools and trusts, however, sustainability is a far more immediate and practical challenge.
Large parts of the school estate were built decades ago, at a time when energy efficiency, carbon reduction and modern building performance standards were not priorities. SBMs, Estates Managers and Trust Leaders are now tasked with making these buildings safer, more efficient and more sustainable, often within significant constraints.
Working with the estate you have
Unlike new-build projects, most schools are focused on improving existing buildings. This brings a particular set of challenges.
Older estates can be characterised by:
inefficient heating and ventilation systems
poor thermal performance and insulation
layouts that are difficult to adapt
rising maintenance and energy costs
Sustainability in this context is rarely about achieving perfection. It is about making informed, proportionate improvements that balance environmental benefit with cost, compliance and operational reality.
Sustainability as a cost and risk issue
For many schools, sustainability has become closely linked to financial sustainability.
Volatile energy costs, ageing plant and increasing maintenance demands mean that inefficiency now represents both a cost and a risk. Decisions about boilers, lighting, controls and building fabric are no longer purely technical, they directly affect budgets and long-term affordability.
Seen through this lens, sustainability is not an optional extra. It is part of managing risk and ensuring that estates remain fit for purpose.
Incremental progress matters
A common misconception is that sustainability requires large-scale capital investment. While major projects can deliver significant benefits, they are not always achievable or appropriate.
In practice, many schools make progress through smaller, incremental actions, such as:
improving controls and system settings
targeting the poorest-performing areas of a building
aligning maintenance and replacement decisions with efficiency gains
Over time, these steps can deliver meaningful improvements without placing unrealistic demands on budgets or capacity.
The link between sustainability, condition and compliance
Sustainability does not sit in isolation from other estates priorities. Building condition, system performance and compliance requirements are often closely connected.
For example, ageing heating systems may present efficiency challenges alongside reliability and safety concerns. Addressing these issues together can support better outcomes than treating them separately.
Taking a joined-up view helps schools avoid missed opportunities and ensures that sustainability improvements also support safety and compliance.
Governance and assurance
As sustainability expectations grow, trust leaders and boards are increasingly seeking assurance around how estates decisions support long-term resilience.
This does not always require a formal sustainability strategy. What matters is clarity, understanding where the main risks and opportunities sit, and how decisions today affect future cost and performance.
Clear, accessible estates information plays a key role in providing this assurance.
A practical approach
Sustainability in an ageing school estate is about pragmatism. It requires working within constraints, making informed choices and recognising that progress may be gradual.
At ECS, we support schools and trusts to take a balanced, evidence-led approach to estates decisions, one that considers sustainability alongside cost, compliance and long-term viability.
In a sector facing increasing pressure on resources, thoughtful, proportionate action can make a real difference.
If you would find it helpful to talk through sustainability considerations within your estate, particularly where ageing buildings, cost pressures and compliance intersect, we are always happy to have an initial, informal conversation.