PPS 6 Addendum Areas of Townscape Character·Page 14·7.9
Change of Use in Conservation Areas
Change of use proposals must be assessed against general land use policies and their impact on the conservation area's character. New uses are acceptable where external alterations are sympathetic, relating in scale, proportions and materials to the building and local street scene.
In assessing applications for the change of use of a property within a conservation area consideration will be given to both the general land use policies of the Department and the impact of the proposed use on the character and appearance of the conservation area. New uses will normally only be acceptable where any associated external alterations, for example new shopfronts, are sympathetic to their setting and relate in scale, proportions and materials to the remainder of the building and the local street scene.
Source — /Users/richardhill/Documents/planning-arch-project/data/documents/regional/PPS 6 - Addendum Areas of Townscape Character.pdf