Planning Appeals Changes from 1st April 2026: What Applicants Need to Know

Significant changes to the planning appeals process in England will come into force from 1^st April 2026, introducing a more streamlined and tightly controlled system for determining appeals. The new regulations will apply based on when a planning application is submitted to a local authority.

Planning applications submitted before 1^st April 2026, will still be subject to the current planning appeals guidance – even if the appeal itself is made after that date. For planning applications submitted on or after 1^st April 2026, the new streamlined process will apply, making it essential to ensure applications are fully comprehensive and “appeal-ready” prior to submission.

The reforms, introduced by the Planning Inspectorate, are intended to speed up decision-making, reduce administrative burden, and place greater emphasis on the quality of information provided at application stage.

What is Changing and When?

From 1^st April 2026, the three existing appeal routes (written representations, hearings, and inquiries) will remain in place. However, the majority of planning appeals will now be determined under the ‘expedited’ Part 1 Written Representations procedure.

Under this approach, appeals will be determined using only the information submitted at the original planning application stage. Under the ‘Part’ 1 process:

•  No written Appeal Statement of Case is required.

•  The appeal form will provide the only opportunity to explain why the decision is being challenged.

•  No new evidence, amendments, or technical reports can be introduced.

•  Third-party representations are limited to those made during the application stage

•  The Local Authority’s case is formed of the decision notice, and officer report or planning committee minutes, and LPA questionnaire.

More complex or exceptional cases will continue to be considered under the Part 2 Written Representations procedure or other routes, as appropriate.

“Submit Once, Submit Right”

As part of the changes, applicants will no longer be able to rely on the appeal process to address gaps in evidence or introduce revisions to schemes. Instead, planning applications must be robust, and effectively “appeal-ready” from the outset.

Implications for Applicants and Developers

These reforms represent a notable change in strategy for both planning applications and appeals, particularly where schemes may be more complex or potentially contentious.

The increased weight on the quality and completeness of planning applications is likely to require a greater emphasis on front-loading submissions, including the preparation of supporting technical reports and the use of pre-application engagement where appropriate.

Careful consideration will also need to be given to how potential issues are addressed at application stage, as there will be limited opportunity to respond to concerns or strengthen a case during the appeal process. Professional advice will therefore remain important in reviewing refusals and determining whether an appeal is likely to succeed under the new regime.

In some cases, applicants may consider alternative strategies, such as appealing on the grounds of non-determination, before a refusal is received, to retain access to different appeal routes. However, this approach carries its own risk and should be carefully assessed on a case-by-case basis.

How can Firstplan help?

As the appeals process becomes more constrained, the importance of early-stage advice and thorough preparation has never been greater.

Firstplan can support clients throughout the planning process, from preparing applications to managing appeals. For advice on how these changes may affect your projects, please do not hesitate to get in touch.

Article prepared by: Rosa Perry