Passive House buildings World wide open their doors in June and November:
Check out https://passivehouse-database.... for more information on the 40+ Certified Passive Homes in New Zealand.

These are some construction photos of the first Certified Passive House Plus home in the Bay of Plenty. 

Our goal was to design and build an affordable, low-maintenance family home, with the benefits of being quiet, comfortable and healthy to live in as well as the energy efficient savings of living in a Certified Passive House Plus home. The 145 m2 (TFA = Treated Floor Area) two-storey house has three bedrooms, two bathrooms and a multi-function room downstairs, which serves as an office, spare bedroom or media room.

How many new home designers and/or builders can tell you what your heating demand, heating load and frequency of overheating will be from a scientifically proven method?
PASSIVE HOUSE METRICS:
Heating Demand: 10.4 kWh/m2/year
Heating Load: 8.4W/m2
Frequency of Overheating: 3.6% year over 25°C

Contact Julie at julie@teamswan.co.nz for more details.