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Appeal Decision 29 - Certificate of Lawful Development.

This appeal decision summary and assessment has been produced by Planning Jungle Limited.  For more information, please go to

October 2009 - Code a00029  


Summary of Case (appeal allowed): 


The property is a two-storey end-of-terrace house, and the application was for a hip-to-gable roof extension and a rear dormer.  The four houses making up the terrace stand at a 45 degree angle to Alnwick Road to the south and Paston Crescent to the east.

The key issue was whether the proposed hip-to-gable extension would be contrary to Class B, part B.1(b), which states that “development is not permitted by Class B if … any part of the dwellinghouse would, as a result of the works, extend beyond the plane of any existing roof slope which forms the principal elevation of the dwellinghouse and fronts a highway”.  The Council argued that, for this property, both the front roof slope and the side roof slope constitute a principal elevation.

The Inspector acknowledged the DCLG - Informal Views from Communities and Local Government” (Dec 2008, updated Jan 2009, superseded Aug 2010), which states that “in the vast majority of cases” the principal elevation will be “the part of the house that fronts the highway and which usually contains the main entrance”, but that in a minority of cases there will have to be an assessment of “what constitutes the principal elevation”.  The Inspector concluded that the word “elevation” is singular, and that there can only be one principal elevation.  He noted that, in this particular case, although the side elevation has a larger surface area than the front elevation, the former is a
largely blank expanse of wall, apart from one small window, whilst the latter contains a projecting gable to roof level, the main windows, and the main entrance within the projecting porch.  He therefore concluded that, in this particular case, the front elevation is the “principal” elevation, and allowed the appeal. 


Main Conclusions: 


·       Only one elevation can constitute “the principal elevation”.
[Note: This would appear to contradict at least one other appeal decision – for further information see the entry in the “Reference Section” on “Principal Elevation”].
[Relevant to: “Principal Elevation”, A.1(d), B.1(b), E.1(b), F.1, G.1(b)]. 


·       This appeal decision provides an example of the types of factors that should be taken into consideration when determining which elevation is “the principal elevation”.
[Relevant to: “Principal Elevation”, A.1(d), B.1(b), E.1(b), F.1, G.1(b)]. 


Links to the “Appeal Decision Notice” and other associated documents (e.g. drawings, etc): 


·       Appeal Decision Notice: 

·       Aerial Photo: 





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