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Last reviewed: Fri, 28 Feb 2014

Port Hills land damage

The Port Hills suffered significant land damage as a result of the 2010/2011 Canterbury earthquakes.

Assessments of the level of damage and decisions around the future of the land are ongoing. Several hundred homes remain at risk of rockfall, cliff collapse or other geotechnical issues. Notices have been issued under the Building Act prohibiting entry because of the danger.

Update: 17 July 2014

Councillors have decided area-wide rockfall mitigation for Port Hills homes red-zoned by the Crown was not practical for several reasons, including uncertainty around effectiveness and costs. Read more here.

Information, guidelines, updates and reports on Port Hills geotech issues

e-newslettersLatest e-newsletters on land changes and damage in the Port Hills area
Mass movement in the Port HillsMass movement 
Information, updates, and reports on mass movement in the Port Hills
Rockfall in the Port HillsRockfall
Information, updates, and reports on rockfall in the Port Hills
Cliff collapse in the Port HillsCliff collapse
Information, updates and reports on cliff collapse in the Port Hills
Retaining walls in the Port HillsRetaining walls
Information, updates and reports on retaining walls in the Port Hills
GNS reportsGNS Science reports
All GNS Science reports completed on the Port Hills since the 2010/2011 Canterbury Earthquakes
general info about the Port HillsGeneral information
Latest notices, general information, updates and reports on land changes and damage in the Port Hills area
Canterbury Support Line Ph 0800777846

Got a question?
For Port Hills residents seeking more information contact

Freepost 178
Port Hills Geotech
PO Box 73011
Christchurch 8154


Authorising Unit: Project Management

Last reviewed: Friday, 28 February 2014

Next review: Saturday, 28 February 2015

Keywords: port hills, slope