Find a PHINZ member

Our members are practitioners and suppliers, providing a range of services and products for use in Passive House projects.


eHaus Central Lakes District

Wanaka, New Zealand
2 Ardmore Street Wanaka Otago 9305 NZ

Under the combined leadership of Chris Deroles and Registered Master Builders Brad Nieuwkoop and Warren Dunn, this expert trio bring a wealth of knowledge and experience in business, building, and passive house technology to the Central Lakes region.

Since 2013, Warren has grown eHaus Manawatu, creating a covetable portfolio of completed projects that are a testament to the efficacy of building – and living – a passive lifestyle.

Collectively, Brad and Warren have 55 years’ combined experience in the building industry, while Chris, who comes in at a Director level, has more than 40 years of business expertise in addition to intimate knowledge of the Central Lakes region.

With climate extremes (very hot summers and extremely cold winters) building the PassivHaus way in Central Lakes is an ideal solution for achieving a more balanced, comfortable home environment without the high use of energy that is currently required by the New Zealand building code.

Membership Level
Certification type
Certified Passive House Tradesperson
Name of certified person
Warren Dunn