Why verifiability is the new standard
In planning, 'trust me' is not a valid citation. With the 2026 PINS changes, the ability to trace and verify every argument has never been more important.
David Robinson
Founder, Planning Appeals
In a professional environment, "trust me" is not a valid citation. Whether a summary is written by a human or an AI, if you can't see the source, you can't use it with confidence.
What is changing?
The 2026 guidance emphasises professionalism and precision. When you cite a case to a client or an Inspector, your professional reputation is on the line. You will now only be able to use what was submitted at the planning stage if you lodge an appeal. In most cases, there will be no opportunity for additional commentary, technical evidence, or a statement of appeal.
Why this matters
Generic AI tools often "hallucinate" or oversimplify complex planning logic. At planningappeals.co.uk, we have built a Verifiable Gateway. We don't just tell you what the Inspector said — we show you the exact paragraph in the original decision letter.
With the new rules, can you afford to have difficult conversations with a client after a refusal if all matters or approaches weren't considered? Are you getting the full picture?
How to adapt
- Never cite in the dark: Every one of our 2.4 million surfaced arguments includes a direct link to the source document. Search with confidence and check quickly.
- Show your working: Strengthen your planning statement by providing the specific, traceable reasoning that has already been accepted by the Inspectorate.
- Look at the full picture: Don't leave it to chance — check how Inspectors have interpreted policy linked to your area, or search similar cases today.
Our platform is a gateway to official government data. We recommend always cross-referencing our extractions with the original documents provided via our "Full Chain" links.
We will be posting every day this week with tips and comments on the new Planning Inspectorate's guidance, including their position on AI. See the new PINS procedural guidance for yourself for applications dated on or after 1 April 2026: https://www.gov.uk/guidance/planning-appeals-procedural-guide-for-appeals-relating-to-applications-dated-on-or-after-1-april-2026#introduction
Planning Inspectorate guidance on AI: https://www.gov.uk/guidance/use-of-artificial-intelligence-in-casework-evidence
Strengthen your next argument
Search 200,000+ appeal decisions. Inspector reasoning, traced back to the original application.
Related articles
How to use data to strengthen a planning argument
From 1 April 2026, your planning submission must do all the heavy lifting. Here's how targeted planning intelligence — and correct policy interpretation — can sharpen your argument from the start.
Consistency & costs
The 2026 PINS guidance shifts the entire burden of defence onto the Officer's Report and Committee Minutes. Transparency is now a financial necessity.
Evidence, evidently
After 1 April 2026, you can no longer 'top up' evidence at appeal. If it wasn't in the original application, the Inspector must disregard it.