MBIE, as the Ministry for Business Innovation and Employment, reports on construction industry statistics. Here is the National Construction Pipeline Report released in August 2018. MBIE National Construction Pipeline Report 2018
MBIE has also produced industry sector reports. The most recent Construction Sector report was in 2013. See the report here. MBIE Construction Sector Report 2013
See more about MBIE’s work here mbie.govt.nz
See the Taylor Report on Auckland’s Building Quality Issues (July 2016) here Taylor Report Akld Bldg Quality July 2016
See the PwC report on Valuing the Role of Construction in the New Zealand Economy (October 2016) here.