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  Reference buildings

BRANZ has calculated the carbon footprint (and other environmental impacts) of a set of reference buildings, using the current data available in LCAQuick. These reference buildings comprise the following:

  • Commercial offices, ranging from a gross floor area of 1500 m2 up to over 9000 m2. These are modelled as structure and enclosure only.
  • Stand-alone houses, comprising examples that have been designed to achieve compliance with the New Zealand Building Code (NZBC), and others that have been designed to exceed the NZBC, particularly with respect to thermal performance and energy efficiency.
  • A medium-density housing (MDH) building.
  • An apartment building.

The results of the reference buildings are embedded in LCAQuick, and may be used as comparators during design. They do not constitute a statistically representative sample, but do provide examples of recently designed and consented dwellings.

Operational energy use is simulated. For residential typologies, this simulation assumes the dwelling is operated to achieve an indoor comfortable temperature, so it is warmer, drier and healthier.

All buildings are simulated based on them being located in Auckland, Wellington and Christchurch.

Below is a list of study reports that provide more information about the reference buildings and how they have been modelled: 

  • BRANZ SR350 study report. This report covers the development of the reference commercial office buildings for version 1.0 of LCAQuick.  Parts of the report have been superceded by the BRANZ SR418 study report.
  • BRANZ SR418 study report (in development). This report covers the development of the reference residential buildings, and update of data/methodology which provides the basis for version 3.3 of LCAQuick.