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What are non-material changes to an application for planning permission?
Following a grant of planning permission, it may be necessary to make amendments to the proposals that were originally approved. A non-material amendment may be applied for to approve a minor change to the planning permission which does not breach any conditions originally placed on the consent.
There is no statutory definition for ‘non-material’ as it can vary on a case-by-case basis. In general, if the change will increase the size, change the appearance of a development or have a large impact on other considerations then it will not be considered non-material.
Read more about this non-material amendment applications.
Common Questions
A garden gazebo or freestanding awning will often fall under permitted development rights provided it abides by the restrictions set out by government. In this instance a garden gazebo or freestanding awning will be classed as an outbuilding and should not be in front of the house or more than 2.5 metres in height.
Different rules apply if the awning is attached to the house itself. It may still be permitted development, but falls under the class of enlargement, improvement or alteration.
Read more information including the full list of rules for outbuildings
Many trees are protected by Tree Preservation Orders (TPO) which means that, in general, you need the council's consent to prune or fell them.
A TPO is placed on a tree, group of trees or woodland with the aim of protecting them. The following is prohibited on a protected tree, without the local planning authority's (LPA) consent:
- Felling
- Topping
- Lopping
- Uprooting
- Wilful damage/destruction
Owners of the trees must maintain their trees, and an LPA will often encourage good tree management. However, they are unable to require maintenance work just because a tree falls under a TPO.
If you wish to complete work on a tree under a TPO you will be required to submit an application to the local planning authority. For full details on this application type, read guidance about works to trees and the application process.
For houses, replacing windows with double glazing usually doesn’t require planning permission, provided the style and appearance are similar to the original. However, if you live in a flat/maisonette, listed building, or a conservation area, planning permission or listed building consent may be required, especially if the changes affect the external appearance.
Read more about planning permission for windows and doors for houses
Read about planning permission for windows and doors for flats and maisonettes
If an outdoor kitchen is not a permanent structure, then planning permission will normally not be required.
Where planning permission is required, it may be granted through permitted development rights, provided it meets the limits set out in legislation. Most outdoor kitchens fall within the set limits unless they are particularly tall or close to a boundary.
While there is no specific permitted development right for ‘outdoor kitchens’ it may be classified as an ‘outbuilding’.
You can view the limitations for outbuildings and outdoor kitchens in the relevant common project
If the structure exceeds the limits set out through permitted development rights, then it will require an application for planning permission.
Different rules may apply if you live in a listed building or conservation area. If this is the case, you may wish to consult your local planning authority.
Read about the building regulations that cover outdoor kitchens.
To qualify as permitted development some household building work projects – notably extending a house – must not exceed limits to the volume being added.
In England, the volume allowance mostly applies to loft conversions. You can read more on the Planning Portal.
Use the volume calculator to find out the volume of several loft conversion and extension types.
