Biodiversity Net Gain changes put nature at risk

What is Biodiversity Net Gain?

Biodiversity Net Gain is a mandatory approach to planning development in England. It means developers must deliver a 10% gain in biodiversity as part of their plans. Developers must deliver a measurable improvement to nature by enhancing or creating new habitats including hedgerows or watercourses and ensure they're managed for at least 30 years.

How does Biodiversity Net Gain work?

Developers must follow a series of steps that seek to avoid and minimise impacts to biodiversity.

The first step is to avoid damage, and then look to enhance existing habitats on the site of their development. These can include things like green roofs, or street trees. They might need to undertake surveys or impact assessments, and then create a delivery plan.

If developers can’t deliver all of their biodiversity gain onsite, they can look to deliver it off-site through dedicated habitat banks. This can be sites such as wildflower meadows and woodlands that are created and managed for 30 years through funding from BNG.

What do the current plans to weaken Biodiversity Net Gain really mean?

Biodiversity Net Gain provides a way to measure nature improvements within the planning system. It means that developers can fund habitat creation and that landowners, including farmers, can be rewarded for restoring nature.  

Building developments can have a huge impact on wildlife and it’s only right that nature is not a victim. We support the principle that developers should make up for unavoidable loss by increasing natural habitats on-site or nearby.

Done well, Biodiversity Net Gain can help development to protect these valued spaces in the first place, or to create and enhance places, for wildlife and for communities nearby.

The proposal to change this fails to recognise the magnitude of the nature crisis – it will increase nature losses and cut wider public benefits in order to maximise profit for a few.  Additionally, the changes are unlikely to speed up development as it doesn’t address the root causes of delays.

Are the plans all bad?

It isn’t all bad news. In the current system, some nature recovery projects - like the creation of ponds and wetlands - have to go through the same planning process. That means the also need to deliver Biodiversity Net Gain. This extra legal requirement can sometimes mean these projects become unviable, so no benefits to wildlife are delivered.

We welcome this exemption, however, we cannot ignore the clear problems with other proposals.

How can I respond to the consultation?

Consultations can be lengthy and complex to respond to, so we’ve tried to make it as easy as possible for everyone. Respond to the consultation

Why do The Wildlife Trusts object to the small sites exemption?

Firstly, size doesn't always show how important an area is for wildlife. Even small building projects can cause big problems for nearby natural areas or break up the connections between different wildlife habitats.

Small losses add up over time. When many small areas are damaged or destroyed, together they create an even bigger problem than each one alone. In short – small developments can have big environmental impacts, and exempting more projects from BNG requirements could cause serious harm to both wildlife and people.