Over the past decade, sustainability has shifted from being an optional design feature to a core requirement in planning applications across London and the wider UK. Local authorities are under increasing pressure to meet national and regional targets for carbon reduction, biodiversity, and climate resilience. As a result, many now require applicants to submit a Sustainability Statement alongside their planning proposals.
What Is a Sustainability Statement?
A Sustainability Statement is a document that explains how a proposed development will minimise its environmental impact and contribute positively to the local area. It demonstrates compliance with planning policies and wider climate objectives, often referencing standards such as Part L of the Building Regulations, the London Plan, and guidance from organisations such as LETI and RICS.
Why Do Councils Require It?
Local authorities must ensure that new developments align with the UK’s Net Zero 2050 target and local climate action plans. A Sustainability Statement provides evidence that the design has been shaped by active and passive strategies, rather than relying solely on regulatory minimums.
Typical areas addressed include:
- Energy efficiency – fabric-first design, insulation, glazing, and airtightness.
- Low-carbon technologies – heat pumps, solar PV, and efficient heating systems.
- Water use – reduction, harvesting, and sustainable drainage.
- Biodiversity – green roofs, planting, and ecological enhancements.
- Materials – low-impact, locally sourced, and recyclable choices.
- Lifecycle considerations – durability, adaptability, and end-of-life reuse.
Benefits for Applicants
A well-prepared Sustainability Statement is not only about policy compliance. It also strengthens the planning application by showing:
- The proposal is future-proofed against tightening regulations.
- The scheme will be cheaper to run for occupants through reduced energy costs.
- The development contributes positively to the local environment and community well-being.
- It reduces the risk of refusal where councils take a strong stance on climate targets.
Conclusion
As planning policy continues to evolve, sustainability is no longer an afterthought — it is at the heart of good design practice. Applicants who invest in a clear, evidence-based Sustainability Statement are more likely to gain planning approval and deliver projects that stand the test of time, both environmentally and financially.
