Artificial Intelligence (AI) is increasingly shaping the planning system in the UK. From drafting appeal statements to summarising documents and generating objections, AI promises efficiency… but it is not a substitute for expertise.
The Planning Inspectorate warns that misuse of AI can weaken evidence, undermine credibility, and even put submissions at risk. Understanding when and how to use AI is essential for anyone involved in planning appeals.
Government Guidance on Using AI in Planning Appeals
The Planning Inspectorate’s guidance makes one thing clear: AI is acceptable only if used responsibly, transparently, and with careful verification.
If AI substantially contributes to any submission, including appeal statements, proofs of evidence, supporting documents, or representations, it must be declared. Submissions should clearly outline which AI tool was used, its purpose, the checks carried out, and confirmation that the author takes responsibility for accuracy.
The guidance is clear on the additional information you need to provide to declare the use of AI, so don’t forget to check it. Failing to declare AI usage could result in submissions being rejected or given less weight.
Why AI Doesn’t Automatically Strengthen Planning Appeals
Many assume AI-generated content is inherently “professional” or persuasive. In reality, planning appeals succeed based on policy compliance, site-specific evidence, professional judgement, and credibility, areas where AI can fall short.
AI can misinterpret local planning policies, overstate conclusions, create generic arguments that lack site-specific relevance and miss crucial material planning considerations. It can also inadvertently introduce errors, including fabricated references or misapplied case law.
Planning is highly contextual. Successful appeals require an understanding of the local character, site constraints, and neighbouring impacts, nuances AI often cannot capture. Ultimately, the responsibility for accurate and lawful submissions rests entirely with you.
The Risks of AI-Generated Planning Objections
AI is also being used to generate objections quickly. While this may seem helpful, it carries significant risks. The number of objections submitted does not automatically strengthen a case; decision-making focuses on policy compliance and material planning considerations, not volume.
Generic AI objections often fail to address site-specific issues and may contain misleading information, undermining trust in the process. Over-reliance on automated objections can also strain the planning system without improving decision quality.
When AI Can Be a Useful Tool
Used correctly, AI can help:
- Summarise large or complex documents;
- Improve clarity of writing; or
- Support research and data gathering
However, AI generated documents must always be checked thoroughly, tailored to the site, and grounded in accurate policy and evidence. Think of AI as a support tool, not a replacement for professional insight. In most cases a reader will be able to identify where AI has been used.
Key Takeaways for AI in Planning Appeals
AI is here to stay in the UK planning system, however it does not replace expertise. The most successful planning appeals are built on:
- Clear strategy;
- Robust, site-specific evidence;
- Policy-led reasoning; and
- Professional judgement and insight.
Used wisely, AI can enhance the process, but the foundation of a credible and the development of a persuasive case remains human expertise.
Related Content
If you’re preparing or responding to a planning appeal, getting expert advice early can significantly improve your chances of success. At Planning House, we help ensure your case is robust, policy-led, and credible, combining professional insight with the careful, responsible use of AI tools. Other blogs you may find useful in relation to understanding the issues surrounding development proposals are:
- The Dos and Don’ts of Appealing a Planning Refusal in England
- How the National Planning Policy Framework (NPPF) Guides Development
- How to Make a Robust Planning Application
- How Planning Applications Are Decided: Understanding Material Considerations
- A Practical Guide to Material Planning Considerations
- Top 10 Tips when considering Appealing a Planning Refusal
- Know your options if your planning application is refused
