What is a Non-Material Amendment (NMA)?

Development proposals still need to be amended sometimes, even after planning permission has been granted. If these amendments are not significant, they may be described as ‘non-material’.

There is no statutory definition of ‘non-material’. This is because it will be dependent on the context of the overall scheme – an amendment that is non-material in one context may be material in another. The Local Planning Authority must be satisfied that the amendment sought is non-material in order to grant an application under the Town and Country Planning Act 1990 (section 96A).

The time period for determination is 28 days, or a longer period if that has been agreed in writing between the parties.

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