What to submit with your planning application

The Council formally adopted the National and Local Validation Requirements on Thursday 5 February 2026.

This sets out the Council’s requirements, which need to be met when an application is submitted. 

The link below will take you to the National and Local Validation Requirements.

Should the information required by the National and Local Validation Requirements not be provided at submission, this will mean that your application cannot be made valid. 

An application can only be made valid by meeting the relevant National and Local Validation Requirements and submitting the required information. It may delay the determination of your application if the required documents are not submitted with your application.

Position on accepting amendments to planning applications

The council's position is not to seek or accept amendments after validation. We will not accept unsolicited amendments. 

Please do not seek amendments in response to an objection unless first agreed with your named planning case officer.

The council will exercise its discretion whether to request or accept amendments to a planning application under consideration.  Upon receipt of an application, we expect it to be:

  • supported by relevant information, and
  • in a condition to be fully assessed and determined as submitted.

On that basis our position is not to seek or accept amendments after validation.  We emphasise this approach by encouraging all to engage in the pre-application service.

Guidance on amendments

This guidance will help you understand when the council will/will not request or accept amendments to planning applications.

We will only seek additional information and/or amendment at officer discretion under either or both of these two conditions:

1.    Further analysis of the case means more information or clarification is needed to complete the assessment of the scheme. For example, cross sectional or levels details drawings. (We would not accept information which requires further consultation).
2.    Amendments of a very minor nature that would improve the scheme.  This must be a necessary improvement and not jeopardise a decision within the statutory period. For example, requiring additional consultation or more detailed third party expert advice.

In addition, we will:

  • only accept one round of amendments to a submitted scheme.
  • only accept the amendment if an extension of time is agreed at the outset.
  • the amendments must be submitted within the timescale given by the named planning case officer.
For further information, please contact us:
Address

Planning Services
Royal Borough of Windsor and Maidenhead
Town Hall
St Ives Road
Maidenhead
SL6 1RF
United Kingdom