Belfast·SPG004 Residential Extensions and Alterations·Page 18·4.1.10

Side extensions and gap closure

Side extensions are acceptable where there is sufficient space and they do not negatively impact the street scene or neighbouring amenity and privacy. Extensions that close common gaps between houses or create a terracing effect are likely unacceptable; single storey side/rear extensions wrapping around the property are more acceptable than two storey extensions in such cases.

A side extension is a practical way to extend a house, where there is sufficient space to do so, and provided that the proposed addition does not result in a negative impact on the street scene or on the amenity and privacy of neighbouring properties. Specifically, where gaps between houses are a common feature of the street, proposals which close such gaps or create a terracing effect are likely to be unacceptable. In such instances, and in cases where a side extension does not provide enough additional space, a single storey side/ rear extension that wraps around the host property is more likely to be acceptable than a two storey extension.

Source — /Users/richardhill/Documents/planning-arch-project/data/documents/belfast/SPG004 Residential Extensions and Alterations.pdf