Biodiversity Net Gain in 2026: Why Bird and Bat Boxes Still Matter for Planning Approval

 

Biodiversity Net Gain is now a central part of the UK planning process. Since becoming mandatory in England, developers must show that habitats for wildlife will be left in a measurably better state than before development begins. In most cases, this means delivering at least a 10% net gain in biodiversity value. (GOV.UK)

For developers, contractors and surveyors, this has changed how projects are planned, costed and approved.

But there is still confusion around one question:

Do bird and bat boxes count towards Biodiversity Net Gain?

The short answer is no, not directly.

 

Do Bird and Bat Boxes Count Towards BNG?

Mandatory Biodiversity Net Gain is measured using the statutory biodiversity metric. This is a habitat-based calculation that assesses the type, quality and size of habitats before and after development.

Standalone bird boxes, bat boxes and swift bricks do not usually create measurable biodiversity units within this metric. That means they are unlikely to help you meet the mandatory 10% BNG target on their own. (GOV.UK)

However, that does not mean they are unimportant.

Bird and bat boxes can still play a valuable role in planning approval and biodiversity strategies.

 

How Bird and Bat Boxes Support Planning Approval

While they may not generate statutory biodiversity units, bird and bat boxes can help strengthen a planning application in several ways.

 

Supporting local planning policy

Many local authorities require ecological enhancements as part of a planning submission. Wildlife boxes can help demonstrate that biodiversity has been considered in the design.

Supporting protected species mitigation

If surveys identify bats, birds or other protected species on or near the site, planners or ecologists may recommend species-specific features as part of mitigation or compensation.

Helping discharge planning conditions

In some cases, wildlife boxes are included as part of conditions attached to planning approval. Installing them early can help avoid delays later.

Strengthening ESG and placemaking

Visible biodiversity features can improve a scheme’s environmental credentials and create stronger placemaking stories for investors, buyers and local communities.

 

Why Developers Should Think Early

The earlier biodiversity features are considered, the easier and more cost-effective they are to implement.

Leaving biodiversity decisions until the final planning stages can lead to redesigns, delays and additional consultancy costs.

By specifying wildlife boxes early alongside habitat creation measures such as:

• native tree planting

• hedgerows

• wildflower meadows

• ponds or sustainable drainage features

developers can build a stronger ecological case from the outset.

 

Bird and Bat Boxes Work Best Alongside Habitat Creation

Bird and bat boxes should not be seen as a replacement for habitat creation.

Instead, they work best as part of a wider biodiversity strategy that includes measurable habitat enhancement and species support.

For example, a wildflower meadow may contribute towards biodiversity units, while a bird or bat box can provide immediate nesting or roosting opportunities for wildlife.

Together, these measures create a more robust planning submission and a better outcome for nature.

 

Why Choose BRDBX?

At BRDBX, we design architect-friendly bird, bat and wildlife boxes made for modern developments.

Our products help developers, contractors and surveyors:

• support local planning policies

• complement wider Biodiversity Net Gain strategies

• improve ESG credentials

• add visible biodiversity features to developments

Our boxes are durable, stylish and designed to integrate seamlessly into residential and commercial projects.

 

Final Thoughts

Bird and bat boxes do not usually contribute directly to statutory Biodiversity Net Gain calculations.

But they can support planning approval, help meet local biodiversity requirements and strengthen the overall ecological value of a development.

In 2026, successful planning applications are about more than numbers on a spreadsheet.

They are about showing a clear, credible and practical commitment to biodiversity from day one.

Explore our commercial wildlife boxes today:
https://brdbx.co.uk/pages/commercial