The Government has published a new Planning Appeals Procedural Guide for appeals relating to planning applications received on or after 1 April 2026, marking a significant shift in the way most planning appeals will be handled in England. The updated framework sits alongside recent amendments to the appeals regulations and reflects a wider drive to streamline the Planning Inspectorate’s processes, reduce delay and accelerate decision-making. The existing procedural guide will continue to apply to appeals arising from applications submitted on or before 31 March 2026, but the new regime introduces a materially different approach for later applications.

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The most important change is the move towards an expanded written representations procedure as the default route for most section 78 appeals, including refusals of planning permission and appeals against conditions. This expedited process, which was previously limited to householder and certain minor appeals, is now being applied more widely. In practice, this means that many appeals will be determined through a shorter, more streamlined written process rather than through the fuller exchange of appeal-stage evidence that applicants and authorities may be used to.

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A central feature of the new procedure is that appeals will generally be decided on the basis of the material submitted during the planning application. There will be no opportunity to introduce new evidence once the appeal has been lodged. That is a significant procedural and strategic change. It reinforces the importance of preparing a robust application from the outset, with the key planning case, technical evidence, policy justification and response to likely objections all properly addressed before determination by the local planning authority.

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The revised approach is intended to reduce administrative burden and support quicker appeal decisions. It also aligns with the Government’s broader emphasis on improving the efficiency of the planning system. Appeals will need to be submitted through the Planning Inspectorate’s updated digital service, replacing older portal systems and creating a more standardised approach to case management nationally.

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For applicants and planning professionals, the practical message is clear. The application stage will become even more important, because it will define the evidential basis of any subsequent appeal. Evidence will need to be front-loaded, policy arguments anticipated early, and potential reasons for refusal addressed before the local planning authority reaches its decision. The appeal stage should no longer be treated as an opportunity to repair or substantially supplement the case. Under the new regime, decision-risk will increasingly be managed before submission and during the application process itself.