A proposal may be exempt from requiring resource consent if it is a boundary activity and the written approval of the adjoining owners has been obtained. This is referred to as a permitted boundary activity.
A boundary rule is a rule controlling the size or position of a structure in relation to the boundary of an adjoining property. A permitted boundary activity can infringe more than one boundary rule.
If the infringed boundary is a public boundary (e.g. roads, rail corridors, waterways) it is not a deemed permitted activity.