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Waikato Cambridge Certified, Passive House Classic


Tim Ross from Architype met the challenge of a long narrow site and district plan setback requirements for this couple relocating to Cambridge who wanted a comfortable, energy-efficient house that would meet their needs as they aged.

The layout, structure, services and aesthetics of the building tightly work together to create a simple yet extremely high performing building. Construction was with structurally insulated panels (SIP). A beautifully crafted and designed family home.


This project is making significant carbon savings for a better environment.

We believe that our homes should have a big impact on the way we live, but little impact on the land. We've calculated the amount of carbon our homes have saved through energy efficiency from move in day 'til now. At their core, eHaus' are built with the elimination of carbon emissions in mind - so we're not only creating healthy, comfy & high performing homes, but spaces that don't cost the earth.

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Design Components

Fully insulated concrete pad with a U-value of 0.232 W/(m²K)
Structural Insulated Panels with PUR (025) 90mm, with 20mm services cavity U-value = 0.304 W/(m²K)
Timber framed roof with 315mm of batts insulation (040 – 047) U-value = 0.15 W/(m²K)
Window Joinery Frame
Dopfner, Slim Double glazed spruce framed and aluminium shielded tilt and turn windows U w-value = 1.32 W/(m²K)
Double Glazed Low E Argon Ug value 1.12 W/(m²K) G Value 58%
Zehnder Q350 MHRV
Hot Water
2 x Apricus ETC30 solar collectors on 20 degree frames connected to Peter Cocks 300L silver bullet tank
Daikin FTXS46L (4.6kw cooling/5.4kw heating) high wall

Performance Specs

Heating Demand: 14.7 kWh/m²/yr
Heating Load: 13.3 W/m²
Frequency of Overheating: 0%
TFA: 207.6m²
Form Factor: 3.1
Air Leakage@50Pa: 0.3 ACH
PER Demand: 42 kWh/m²/yr


Architype NZ


Sustainable Engineering - Jason Quinn

Meet the team of designers and builders behind this project

Our eHaus team is made up of some of the country's best Passive House builders, architects and designers who are redefining the way kiwis live one home at a time. Our team of professionals work together to see your dreams come to reality.
See this eHaus for yourself
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Benefits of living in a Passive House built by eHaus

Denis and Judy share their experience of living in an eHaus, built by eHaus Waikato. From the clever design, to the truly healthy environment that Tim Ross from Architype and eHaus Waikato have created, these clients truly love living, working and playing in their new home.

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400 Victoria Ave, Whanganui
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