Terracing effect

The spaces between buildings often make an important contribution to the character of an area. Extensions should not alter the character of an area by creating a 'terracing effect' where properties meet to give the impression of a continuous building frontage facing the street. This is particularly noticeable where an extension continues the roof line of the original building and where a neighbouring property could also be extended in a similar manner. The loss of space between properties or where only a narrow gap is left to the boundary can also create a terracing effect. Extensions which result in a meaningful gap (for example 1m or more) between the boundaries of neighbouring properties can prevent terracing by maintaining a visual opening. Where extensions extend to the property's side boundary a visual gap can also be maintained if the height of the extension is a storey or more below that of the existing property (e.g. a single storey extension to the side of a two storey dwelling). In some instances the use of 'set backs' and dropped ridge lines can be used to offset the terracing effect and may be acceptable subject to other guidance including the availability of bin storage. The objective is to minimise the extent to which an extension results in a continuous unbroken building frontage.