Certificate of Lawful Development Appeal Decisions by category of development.

The Town and Country Planning (General Permitted Development) Order 1995
Part 1 (as amended on 1 October 2008) 

Wrap around extensions

Interaction between A.1(e)/(f) and A.1(h):

  (i.e. intereaction between rear projection limits and side projection limits)

·       It is incorrect to take the approach that an extension must either be a “rear extension” or “side extension”, and then to apply either A.1(e)/(f) or A.1(h) respectively. Where an extension would extend beyond both an original rear wall and an original side elevation, then both A.1(e)/(f) and A.1(h) will be applicable.
[Source: April 2010 - Code a00114].
[Source: June 2010 - Code a00125].
[Source: “DCLG - Permitted development for householders - Technical guidance” (August 2010)].

·       Where the rear and side elevations of a property are flat (i.e. not stepped), Class A, part A.1(e), and Class A, part A.1(h) would not allow an extension to project 3m/4m from the rear elevation and then wrap-around the corner to project half the width of the house from the side elevation. This is on the basis that the restriction against having “a width greater than half the width of the original dwellinghouse” applies to the entire extension (i.e. not just to that part of the extension that extends beyond the original side wall).
[Note: This contradicts the entry two below].
[Source: “DCLG - Permitted development for householders - Technical guidance” (August 2010)].
[Source: August 2010 - Code a00131].
[Source: December 2010 - Code a00186].
[Source: January 2011 - Code a00196].

·       Where the rear and side elevations of a property are flat (i.e. not stepped), Class A, part A.1(e), and Class A, part A.1(h) would not allow an extension to project 3m/4m from the rear elevation and then wrap-around the corner to project half the width of the house from the side elevation. This is on the basis that part of the extension would not be attached to either the side or rear wall of the original dwellinghouse.
[Note: This contradicts the entry below].
[Note: In my opinion, this appeal decision is questionable, because the Inspector has agreed that the “corner” part of the proposed extension would not be permitted development, without identifying any limitation or condition to which this “corner” part would be contrary].
[Source: October 2009 - Code a00033].

·       Where the rear and side elevations of a property are flat (i.e. not stepped), Class A, part A.1(e), and Class A, part A.1(h) would allow* an extension to project 3m/4m from the rear elevation and then wrap-around the corner to project half the width of the house from the side elevation.
(*subject to compliance with all other limitations and conditions, of course)
[Note: This contradicts the entry above and the entry two above].
[Source: October 2009 - Code a00035].
[Source: December 2009 - Code a00062].
[Source: January 2010 - Code a00088].

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