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New Zealand home designers, specifiers and sales agents are increasingly being asked for higher-performing new homes, but recommendations for comfortable temperatures, energy efficiency and water use improvements are often limited to general information, rather than specifics on resource saving and costs.

Three themes

Up-Spec provides actual data for a range of performance improvements for new homes, which focus on practical and cost-effective measures across three themes: 

Nine climate zones

Figures are available for nine climate zones: AucklandTaurangaHamiltonNapierWellingtonNelsonChristchurchDunedin and Invercargill.

Independent research

The performance upgrades are based on independent research by BRANZ (Up-Spec:Background research) and are region specific where possible. Only the most cost-effective improvements have been selected, based on homes consented in 2012. Figures take inflation and returns into account. The information is based on the most recent information wherever possible and will be updated every 3 years. All figures are estimates and should be seen as starting points for discussions. Once the upgrades have been chosen, the estimated extra cost figures will need to be more accurately determined and will vary depending on the specific design.

The information was developed in consultation with the homebuilding and environmental advisory community to ensure design solutions are practical and relevant and address key areas of concern.

Note that the focus of the research is on energy efficiency, water efficiency and personal financial considerations. Other issues, such as impacts on the environment or society, are not considered, but may be equally, if not more, important to clients.

Further advice

For independent and knowledgeable advice, contact the free, award-winning, Eco Design Advisor service.


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