A tree canopy cover assessment helps demonstrate how tree cover on a site will change over time as part of a planning application.
Many Local Authorities now require this assessment to show how a site could look in 30 years. As a result, it provides a clear comparison between existing tree cover and the projected canopy following development.
Why a Tree Canopy Cover Assessment is Required
Planning policies increasingly focus on sustainability and green infrastructure. Therefore, demonstrating the long-term impact of development on tree cover has become essential.
A canopy cover assessment helps you:
- Show the impact of proposed development on tree cover
- Demonstrate potential net gain in canopy
- Support planning applications with clear evidence
- Align with Local Authority requirements
Because of this, it has become a valuable tool for developers and design teams.
How We Calculate Tree Canopy Cover
We use industry data and established research to project how trees will grow over time.
Our assessment considers:
- Tree species and typical growth rates
- Existing tree age and condition
- Canopy spread and potential overlap
- The proportion of canopy within and outside the site boundary
- The impact of retained, removed, and proposed trees
Using this information, we calculate the current canopy cover and project it forward over a 30-year period.
30-Year Canopy Projections
We model how the site will evolve over time under different scenarios.
This includes:
- Existing site conditions (no development)
- Proposed development layout
- Replacement planting and future growth
As a result, you can clearly demonstrate how your development will affect canopy cover in the long term.
Supporting Net Gain and Planning Approval
A tree canopy cover assessment provides clear, evidence-based data to support your planning application.
We help you:
- Demonstrate canopy cover retention or net gain
- Strengthen your planning submission
- Provide clear visuals and calculations for decision-makers
- Reduce the risk of objections or delays
Because Local Authorities increasingly expect this level of detail, early assessment can significantly improve your chances of approval.
Areas We Cover
We provide tree canopy cover assessments across:
- Oxfordshire
- Berkshire
- Buckinghamshire
- Wiltshire
- Hampshire
- Northamptonshire
- London
Request a Tree Canopy Cover Assessment
Contact us if your project requires a tree canopy cover assessment. We can provide clear, accurate projections to support your planning application.

