Detailed seismic assessment (DSA)

Following the Canterbury earthquake sequence, the territorial authorities (TA) now requires all non-residential buildings, including multi-unit residential blocks, to obtain a detailed seismic assessment (DSA).

The aim of the evaluation is to assess the damage that the subject building sustained from the seismic events, and to determine if the building is defined as earthquake prone in terms of the Building (Earthquake-prone Bulidings) Amendment Act 2016, taking effect from 1 July 2017.