Helping landowners, developers, architects and homeowners to meet Biodiversity Net Gain (BNG) legislation quickly & with ease!
A PEA is the first stage in assessing a site’s biodiversity value and is usually carried out as early as possible in the planning process.
The purpose of a PEA is to: Identify any potential for; ecological constraints, the need for further ecological surveys, any mitigation measures, and opportunities for ecological enhancement. As well as gaining a baseline for BNG.
The statutory biodiversity metric is used to calculate biodiversity units and is made up of three modules: Area habitat units, Hedgerow units, and Watercourse units. The value of a habitat is determined by a number of factors, including: The habitat’s size, The habitat’s distinctiveness, The condition and quality of the habitat and The connectivity of the site to other areas.
A biodiversity gain plan alongside a Habitat management and monitoring plan (HMMP) are documents that show how you will achieve biodiversity net gain (BNG). Both are detailed plans that outline how land will be managed over a period of at least 30 years. The plan helps to create and enhance habitats and to manage and monitor biodiversity net gain outcomes.
Our highly experienced, qualified, and licensed ecologists offer a full suite of ecology consultancy solutions.
Protected Species Surveys are usually required when impacts to one or more legally protected species is considered likely and presence or likely absence needs to be determined.
Our fully licenced and qualified ecologists undertake all protected species surveys and EPSL licencing.
Protected Species Surveys are usually required when impacts to one or more legally protected species is considered likely and presence or likely absence needs to be determined.
Our fully licenced and qualified ecologists undertake all protected species surveys and EPSL licencing.
Protected Species Surveys are usually required when impacts to one or more legally protected species is considered likely and presence or likely absence needs to be determined.
Our fully licenced and qualified ecologists undertake all protected species surveys and EPSL licencing.
Biodiversity Net Gain (BNG) is a critical and evolving concept in environmental conservation and development planning, particularly in the United Kingdom. With increasing environmental challenges, BNG policies seek to improve biodiversity rather than merely mitigate harm. This guide provides a comprehensive exploration of BNG, its principles, legislation, and processes.
Biodiversity Net Gain (BNG) represents a significant shift in how development and conservation can coexist, promoting a future where growth leaves positive ecological impacts rather than merely mitigating harm. With its foundation in the UK’s Environment Act 2021, BNG requires that developments do more than limit environmental damage; they must contribute a measurable improvement in biodiversity, supporting the health, diversity, and resilience of ecosystems.
BNG’s multi-dimensional approach is comprehensive, blending environmental, social, and economic benefits. Environmentally, BNG enhances ecosystem resilience by restoring habitats, supporting species diversity, and improving climate adaptability through natural solutions such as flood management and carbon sequestration. Socially, it enhances public health, mental well-being, and community cohesion by creating accessible green spaces and educational opportunities. Economically, it increases property values, attracts sustainable investments, and contributes to long-term savings in environmental management.
Implementing BNG may present challenges, such as upfront costs and complex planning, yet the long-term benefits outweigh these hurdles. Developers and communities alike benefit from improved reputations, stronger local support, and compliance with evolving environmental standards. By fostering collaboration between planners, conservationists, businesses, and communities, BNG is helping to shape a development process that is not only profitable but also deeply sustainable.
As global environmental challenges grow, BNG is setting a precedent that could inspire similar policies worldwide, highlighting that economic growth and biodiversity conservation are not mutually exclusive but can be achieved together. Through careful planning, ongoing management, and a commitment to ecological stewardship, BNG offers a path toward a healthier planet where development supports and enriches the natural world. By embracing BNG principles, we move closer to a future where the environment is left in a better state for generations to come.
Under the UK’s Environment Act 2021, most major developments are legally required to deliver a minimum 10% Biodiversity Net Gain (BNG). This includes:
Some smaller-scale projects and developments on previously developed land, known as “brownfield sites,” may be exempt or subject to different rules depending on the extent of their environmental impact. The specifics can vary by local authority, so it’s advisable for developers to consult with local planning authorities to determine BNG requirements for smaller or less impactful projects.
The Biodiversity Metric 4.0, developed by Natural England, is the main tool used in the UK to calculate BNG. This metric quantifies the biodiversity value of a site both before and after development, allowing for a clear comparison. The calculation considers three primary factors:
Developers are required to provide baseline biodiversity scores based on these factors and propose post-development scores that reflect at least a 10% increase. This ensures biodiversity gains are measurable and verifiable throughout the project.
Implementing BNG does require upfront costs, including:
However, these costs can be offset by the long-term benefits of BNG, such as community support, quicker planning permissions, and increased property or land value.
Yes, offsetting is an option under BNG, but it is typically regarded as a last-resort measure after all efforts to avoid, minimize, and mitigate on-site impacts have been exhausted. Offsetting allows developers to deliver biodiversity gains by creating or enhancing habitats at a different location if it’s not feasible to achieve BNG on-site. Key considerations include:
Many local authorities are encouraging developers to prioritize on-site enhancements or nearby offsets, ensuring local biodiversity improvements.
BNG commitments typically require maintenance for a minimum of 30 years. This extended duration ensures that the biodiversity gains achieved are not temporary but contribute to long-term ecological health and resilience. During this period, developers are responsible for maintaining the habitat in accordance with their approved biodiversity gain plan, which includes:
Some developers choose to work with conservation organizations or local authorities to manage these areas, ensuring expertise in habitat upkeep and biodiversity support.
Failure to meet BNG requirements may result in:
To avoid these consequences, developers are encouraged to work closely with environmental consultants, ecologists, and local planning authorities to ensure compliance and avoid potential setbacks.
Local authorities are responsible for overseeing BNG requirements within their jurisdiction. This includes:
Local authorities are also instrumental in establishing guidelines for biodiversity offsets and encouraging developers to prioritize local gains where possible.
If a developer does not maintain the BNG commitments, several actions may be taken:
To avoid these outcomes, developers are encouraged to build strong partnerships with environmental consultants, local conservation groups, and the community for sustainable, well-managed outcomes.
For developers, BNG offers a variety of benefits:
Additionally, BNG-compliant projects are often seen as forward-thinking and resilient, contributing to future-proofing developments in an increasingly sustainability-conscious market.
BNG provides local communities with several benefits:
Communities often actively support BNG-compliant projects, leading to a more harmonious development process and improved outcomes for both developers and residents.
While BNG is mandatory in the UK, several other countries are exploring similar biodiversity-focused planning requirements, though they may not yet be mandatory. For instance:
BNG’s success in the UK may inspire more widespread adoption globally, especially as countries seek sustainable development solutions.
Biodiversity Net Gain (BNG) is an approach to development that leaves biodiversity in a measurably better state than before. It involves assessing the ecological value of an area before development, then ensuring post-development outcomes improve biodiversity quantitatively and qualitatively.
Biodiversity Net Gain (BNG) is a forward-thinking, conservation-centered approach to development that seeks to leave the natural environment in a better state than before a development project begins. Unlike traditional mitigation approaches, which often focus solely on reducing the negative impacts of development, BNG actively aims for measurable improvements to biodiversity, creating an environment that supports greater ecological diversity and resilience.
BNG is guided by core principles, including avoiding harm where possible, minimising and mitigating unavoidable impacts, and implementing strategies that lead to a net gain in biodiversity. This systematic approach acknowledges the interdependence between ecological health, social well-being, and economic sustainability, positioning BNG as an integral component of responsible development.
Biodiversity refers to the diversity of life on Earth, encompassing all species of plants, animals, fungi, and microorganisms, along with the ecosystems they form. High biodiversity contributes to ecosystem stability and resilience, supporting functions like pollination, water filtration, carbon storage, and nutrient cycling. Loss of biodiversity, often due to human activities, weakens ecosystems, making them more susceptible to disruptions like climate change and reducing the resources available to society.
BNG seeks to go beyond simply protecting existing biodiversity by enhancing it in meaningful ways. This can include:
The practice of BNG is guided by specific principles to ensure that it genuinely benefits biodiversity and aligns with sustainable development goals. The widely accepted principles of BNG include:
Biodiversity gains can be achieved through several approaches, each with specific outcomes that enhance or create ecosystems. Some common types of biodiversity gains include:
BNG aligns with the United Nations Sustainable Development Goals (SDGs), particularly those focused on environmental sustainability, climate action, and health and well-being. By integrating BNG into planning processes, governments and developers can ensure that growth contributes to broader sustainability objectives, supporting healthier ecosystems and communities.
BNG also underpins economic benefits by creating ecosystems that provide essential resources and services. Natural areas that result from BNG initiatives, such as parks and greenways, improve public health and attract tourism, contributing to local economies. Moreover, BNG-compliant projects often enjoy stronger community support due to the positive environmental impacts they bring, enhancing project viability and public relations.
While BNG is a promising framework for improving biodiversity, it faces several challenges:
BNG policies are continually evolving to address these challenges, with increasing emphasis on transparency, regulation, and scientifically rigorous assessments to ensure that BNG commitments lead to real, lasting benefits for biodiversity.
The primary goals of BNG are:
The UK’s Environment Act 2021 mandates that all developments provide a net gain in biodiversity. Key requirements include:
To standardise biodiversity assessments and the Natural England developed Biodiversity Metric 4.0, are tools that quantifies the ecological value of habitats, allowing developers to calculate baseline biodiversity and predict outcomes. Metrics consider:
The first step in achieving BNG is conducting a baseline biodiversity assessment. This involves:
Developers must assess the feasibility of biodiversity improvements, considering:
A BNG Strategy outlines how a project will meet BNG requirements and includes:
A Biodiversity Gain Plan (BGP) is a formal document that developers must submit, detailing how BNG objectives will be achieved, including:
Once planning permission is granted, the project enters implementation and monitoring phases to ensure biodiversity targets are met over the required 30 years. Regular reporting to the local authority is required to document progress.
BNG’s core principle is to ensure that developments lead to a measurable improvement in biodiversity, leaving the environment in a better state than before. While BNG requires upfront planning and financial commitment, the long-term benefits of this approach are substantial and far-reaching, impacting ecosystems, communities, and economies in enduring ways. Here’s how BNG contributes to a sustainable future across multiple dimensions.
BNG strengthens ecosystems by increasing biodiversity, which makes ecosystems more resilient to disturbances such as extreme weather, diseases, and invasive species. Healthy, diverse ecosystems are better equipped to absorb shocks and adapt to change, ensuring continued provision of essential ecosystem services. This resilience is increasingly vital in the face of climate change and environmental degradation.
Natural environments significantly contribute to human health and well-being, offering both physical and mental health benefits. Access to green spaces has been linked to lower rates of stress, anxiety, and depression, while encouraging physical activity, community engagement, and relaxation.
BNG plays a dual role in addressing climate change by contributing to both mitigation and adaptation strategies. It mitigates climate change by enhancing carbon-storing ecosystems and helps communities adapt to climate-related challenges by creating resilient landscapes.
BNG projects contribute to economic sustainability by enhancing property values, reducing long-term environmental management costs, and attracting investments that prioritise sustainability. The economic benefits of BNG can be seen in multiple ways:
BNG projects create opportunities for communities to learn about and connect with the natural world. By fostering a sense of ownership and stewardship, BNG helps create communities that are more committed to environmental conservation.
Companies and developers that prioritise biodiversity conservation benefit from a stronger reputation, both with consumers and within the industry. BNG requirements are helping to shift corporate practices towards sustainability and environmentally responsible development.
The most direct and essential benefit of BNG is the measurable increase in biodiversity, which supports a more stable and healthy environment for future generations. By actively restoring, enhancing, and creating habitats, BNG initiatives can help slow or even reverse biodiversity loss.
The long-term benefits of Biodiversity Net Gain extend across ecological, social, and economic dimensions, fostering resilient ecosystems, healthier communities, and a stronger economy. By mandating that developments contribute to biodiversity rather than merely minimise harm, BNG represents a progressive shift toward sustainable development practices. Its enduring impacts benefit not only the environment but also future generations, positioning BNG as an essential component of responsible, forward-looking development.
These long-term advantages showcase the value of BNG for developers, communities, and the planet, encouraging broad support for biodiversity conservation as an integral aspect of sustainable development.
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