PPS 7 Addendum Residential Extensions and Alterations·Page 14·A16
Roof forms and chimneys rhythm and uniformity
The regular repeated rhythm and uniformity of roof forms and chimneys in similar buildings or townscape should be retained. New elements like dormer extensions should complement the original building's period and style or reflect best examples in the area.
The regular repeated rhythm and uniformity of roof forms and chimneys may be a particular feature of a group of similar buildings or the wider townscape and should therefore be retained. If elements, which are not part of the original property are proposed, for example, a dormer roof extension, these should be designed in a manner that complements the period and style of the original property, or to reflect the best examples of such features on properties of a similar period in the area.
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