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To enable further householders to benefit from a larger extension to their home without the need for a planning application, Regulation 4 amends the Part 1 of Class A of Schedule 2 permitted development right for enlargement, improvement or alteration of a dwelling house (C3). The amendment removes the date by which the larger extension must be completed, thereby making the right permanent. Those with prior approval no longer have to complete the development by 30 May 2019, including where this is set out in a letter granting prior approval. Any existing article 4 direction in respect of larger extensions to dwelling houses will remain in force unless it is expressly time limited. Applicants will no longer be required to notify the local planning authority that the development is complete.
Read further information.
For a property that benefits from permitted development rights, single storey extensions at the rear of a house can be built up to the following limits:
Note: To benefit from the allowances, the developer must send in a prior approval application before any work has started. Read the larger home extension planning portal guidance and application forms.
There have been changes to the nationally set fee regulations that will mean that a fee of £96 will be payable for all Notification of larger home extension submissions.
The enlargement of a house through any extension (or conservatory) is not permitted development if:
You must also make sure that your proposed extension fits in with conditions of the permitted development.
If your proposed extension includes extending to the side of any part of the original home then this procedure cannot be used. This is important if your proposal includes an original wing (out rigger) to the rear of the property.
Some houses have had the permitted development allowances removed when the house was first built.
You can check your property to see if it is within a conservation area, a site of special scientific interest (SSSI) or within an area where permitted development has been removed using our online map.