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Project in Detail

C3 House

Future Projects - House
Wanaka, New Zealand
RTA Studio, Auckland, New Zealand
2012
World Architecture Festival 2012 - Category Winner


Brief:
To design a permanent residence for a family of four with 2 living areas, 2 guest bedrooms, gym, garaging for 2 cars. The design needed to achieve a zero carbon footprint and be visually integrated into the landscape.

Visual Impact on the Environment:
The C3 house has been designed to occupy a position in a highly controlled and restricted outstanding natural landscape zone on the Southern Lakes region of New Zealand. Planning controls in this area require buildings to have ‘less than minor’ visual impact on the landscape from surrounding public open space.
Some of the controls are: 4.5 meter flat plane height limit at the highest point, a pre determined designated building platform, recessive colours and textures, limited earthworks disturbance and limited vegetation disturbance.

Carbon Agenda:
The developer of the land subdivision, Longview Environmental Trust, has developed a site specific sustainable house rating tool that is the most comprehensive tool available in New Zealand. Land purchasers are required by the Trust to meet a minimum rating on this tool. This project, however, strives to reach the maximum score and achieve triple carbon-zero status: zero carbon emissions from its operational energy use; zero carbon emissions from its total material manufacture and zero waste to the environment at the end of its lifecycle. The project has succeeded at this challenge.
The house is almost entirely constructed of local stone in Gabion Baskets, local renewable timber and rammed earth with limited use of steel cement and glass. The overall embodied carbon is negative.
The energy consumption is kept extremely low by a hugely efficient thermally insulated external building envelope and a highly efficient ground-source heat pump as the
primary heating source together with low energy use lighting and appliances. Electricity required to operate the house is entirely generated by photo-voltaic cells. At the end of the house’s lifecycle, the entire building can be recycled.

Lead Architect »

RTA Studio
Auckland
New Zealand
 

Professional Credits »

Acoustics Consultant
N/A
New Zealand

Architect
Mr Richard Naish
RTA Studio
New Zealand

Civil Engineer
N/A
New Zealand

Client / Developer
Long View Environmental Trust
New Zealand

Cost Consultant
Mr Steve Gracey
Rider Levett Bucknall
New Zealand

Environmental Engineer
N/A
New Zealand

Interior Designer
N/A
New Zealand

Lighting Consultant
N/A
New Zealand

Main Contractor
N/A
New Zealand

Masterplanner
N/A
New Zealand

Project Manager
N/A
New Zealand

Structural Engineer
Mr Maurice Harris
Harris Foster Consulting - HFC
New Zealand

Sustainability Consultant
Mrs Jo Woods
eCubed Building Workshop
New Zealand

Transport Engineer
N/A
New Zealand