What is Prior Notification and how does it affect householders?

Prior Notification Legislation allows larger single-storey rear extensions to be built under permitted development rules came into force on 30th May 2013.

The new size limits are subject to a neighbour consultation scheme that required specific information to be submitted to the Local Planning Authority.

For a period of three years, between 30 May 2013 and 30 May 2016, householders will be able to build larger single-storey rear extensions under permitted development. The size limits will double from 4 metres to 8 metres for detached houses, and from 3 metres to 6 metres for all other houses. These new larger extensions (i.e. if they extend between 4 and 8 metres, or between 3 and 6 metres) must go through a “prior notification” process through the Local Planning Authority which is subject to a neighbour consultation scheme.

The rules do not apply if:

  • the extension exceeds 4 metres in height
  • the house is in a Conservation Area; or
  • the house is within a Site of Special Scientific Interest.

The proposal must be fully illustrated as scaled drawings showing ‘as existing’ and ‘as proposed’. The drawings must illustrate floor plans, elevations, sections and the relationship to adjacent (neighbouring) properties. The application drawings must also include an Ordnance Survey Location plan (charged between £20 – £30 inclusive of VAT).

The dimensions specified above are measured as a projection from the rear wall of the original house.

If the extension is subsequently built out it must be completed by the 30th May 2016. A completion certificate must be submitted to the Local Planning Authority.

Standard forms must be completed and the application submitted to the appropriate Council.

There is no application fee required to accompany the drawings.

Once submitted, the application will then consult with neighbours (occupiers or owners of adjoining premises) for a period of 21 days.If an objection is received then the Local Planning Authority will assess the impact of the proposal extension on the amenity of the neighbours. The Local Planning Authority may then either allow the development to go ahead or refuse approval.If the Local Planning Authority refuses the application, then the applicant has a right to appeal.A decision must be issued within 42 days from the date the Council receives the information.

If no objections are received, or if the Council fail to issue a decision within 42 days, then there will be a deemed approval.