Q: An authority has refused a lawful development certificate (LDC) for a full-width rear dormer because raising of the party walls means the dormer will not be entirely within the dwelling's curtilage. Even if one accepts that half the party wall is outside the curtilage of the house on which the dormer is proposed, the extension of that half of the party wall belonging to the adjoining house would be permitted development for that property. However, this could result in the bizarre situation of having to make three LDC applications for the dormer, covering the host property and the homes on either side. Are you aware of any case law that might shed some light on this issue? AR

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