How Biodiversity Net Gain (BNG) is Changing Tree Surveys in the UK

With new environmental regulations now shaping the future of development across the UK, Biodiversity Net Gain (BNG) has become a key consideration for developers, landowners, and councils.

But what does this mean for trees, and more importantly, for the surveys required before development begins?

In this blog, we break down how BNG is changing tree surveying and why working with experienced arboricultural surveyors is more important than ever.

What is Biodiversity Net Gain (BNG)?

Biodiversity Net Gain is a government-led initiative that requires developers to leave the natural environment in a better state than before development began.

In simple terms, if you remove trees or green space, you must replace or improve biodiversity elsewhere.

This is now a legal requirement for many developments in England.

Why Trees Are Central to BNG

Trees play a major role in biodiversity because they:

• Support wildlife habitats

• Improve air quality

• Store carbon

• Enhance landscape value

Because of this, existing trees are now more valuable than ever during planning applications.

Removing trees without proper assessment can:

• Delay planning approval

• Increase project costs

• Lead to compliance issues

How Tree Surveys Have Changed

BNG has made tree surveys more detailed and more critical in the planning process.

More detailed assessments, tree surveys now need to consider:

• Ecological value

• Long-term environmental impact

• Retention vs removal strategies

Stronger focus on tree retention, developers are now encouraged to:

• Retain high-value trees

• Design around existing landscapes

• Reduce unnecessary removal

Integration with ecological reports, tree surveys are increasingly being used alongside:

• Habitat assessments

• Biodiversity calculations

• Environmental impact reports

Why You Need a Professional Tree Survey

With regulations becoming more complex, a professional survey is no longer just a “tick box” exercise, it’s essential.

At North West Tree Management, we provide:

• BS5837 Tree Surveys

• Arboricultural Impact Assessments

• Expert guidance for planning compliance

We help ensure your project meets BNG requirements, avoids costly delays & moves smoothly through planning.

Who Needs to Be Aware of BNG?

This applies to:

• Property developers

• Construction companies

• Architects & planners

• Local councils

• Landowners

If your project involves land or trees, BNG will likely impact you.

Biodiversity Net Gain is transforming how development works across the UK and trees are at the heart of it. Getting the right tree survey early can save time, reduce costs, and ensure your project meets all legal requirements.

If you’re planning a development and need expert advice on tree surveys and BNG compliance get in touch today to discuss your project.