Adjacent Excavation

Section 6 of the Party Wall etc. Act 1996 covers adjacent excavation and construction where:

  • Three Metres. If it is proposed to carry out excavation or piling within three metres of an adjoining owners’s building or structure and to a level below their foundations, the Act applies.
Adjacent Excavation
Adjacent Excavation

Source: The Party Wall etc Act 1996, explanatory booklet, the Department of the Environment, Transport & the Regions. Crown copyright is reproduced with the permission of the Controller of Her Majesty's Stationery Office.

  • Six Metres. If deep excavation or piling work is being carried out, within six metres of a neighbour’s building/structure, the Act may apply. This situation is perhaps more easily explained with the diagram below. (If it is proposed to excavate within a distance of six metres measured horizontally from any part of a buildng or structure of an Adjoining Owner and any part of the proposed excavation will within those six metres (6 metres) meet a plane drawn downwards in the direction of the excavation at an angle of forty-five degrees (45º) from the bottom of the adjoining owner's foundations, the Act will apply.) 
6 Meters

Source: The Party Wall etc Act 1996, explanatory booklet, the Department of the Environment, Transport & the Regions. Crown copyright is reproduced with the permission of the Controller of Her Majesty's Stationery Office.