Planning Portal

PPS 7 (Addendum): Residential Extensions and Alterations
Annex B: Permitted Development

B1 In some cases it is possible to carry out an extension or make an alteration to a dwellinghouse For the purposes of permitted development a dwelling house does not include a building containing one or more flats, or a flat contained within such as building. It also excludes any house or flat in multiple occupation. without the need to obtain planning permission, provided you meet specific requirements. This is known as ‘permitted development’ and detailed information on this matter is contained in the Planning (General Development) Order (Northern Ireland) 1993. The Department has also produced a guide entitled ‘Your Home and Planning Permission’ which provides useful information for householders The document ‘Your Home and Planning Permission’ is available from all Divisional Planning Offices.
B2 Permitted development rights are complex and sometimes more restrictive in designated areas, such as, conservation areas and areas of outstanding natural beauty; and for certain properties, such as listed buildings Any works of alteration or extension to a listed building which would affect its character as a building of special architectural or historic interest require Listed Building Consent.. It may also be the case that in some instances permitted development rights have been removed from a property by condition or have already been used and you should clarify this with your local planning office before proceeding with any proposal. If you consider the works you propose to carry out are permitted development you are advised to apply formally to your local planning office (see Annex C) for a Certificate of Lawful Use or Development before proceeding with the development. Such an application should be made using the appropriate form (LDC1) together with accompanying location map, plans and fee. Full details about the information required are listed on the application form and accompanying guidance notes. Advice on the necessary fee can be obtained from your local planning office or the Planning Service website.
B3 There are benefits in gaining a Certificate of Lawful Use or Development. It is a determination that has legal status providing certainty to prospective purchasers of land and buildings, particularly those participating in the housing market.  Solicitors representing purchasers of extended or altered residential properties will usually require documentary evidence that the extension or alteration is lawful. This evidence may assist with the sale of property.
B4 Certificates of Lawful use or Development also provide necessary evidence that any works being undertaken are lawful if, for example, a neighbour were to make an enquiry or complaint about the work.
For the purposes of permitted development a dwelling house does not include a building containing one or more flats, or a flat contained within such as building. It also excludes any house or flat in multiple occupation.
The document ‘Your Home and Planning Permission’ is available from all Divisional Planning  Offices.
Any works of alteration or extension to a listed building which would affect its character as a building of special architectural or historic interest require Listed Building Consent.
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