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) 

Development within the curtilage of a dwelling house

(i.e. party walls)

 The party wall of a property does fall within the “curtilage” of the property. As such, works to a party wall are covered by the phrase “Development within the curtilage of a dwellinghouse”, and therefore would fall within the scope of Part 1 of the GPDO.
[Source: January 2010 - Code a00076].
[Source: January 2011 - Code a00190].

·       For example, where the proposals involve the building up across the full width of a party wall between two properties, this is permitted* by the Classes within Part 1.
(*subject to compliance with the particular Class including all limitations and conditions, of course)
[Source: January 2010 - Code a00076].
[Source: January 2011 - Code a00190].

·       It should be noted that it is possible for the curtilages of two properties to overlap slightly, such that the same party wall is within the curtilage of each of the two properties.
[Source: January 2010 - Code a00076].
[Source: January 2011 - Code a00190].

·       Where works would be situated within the curtilage of more than one house (note: to a more significant extent than simply building up across the full width of a party wall), then such works would not fall within the scope of Part 1 of the GPDO.
[Source:May 2011 - Code a00243].

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