New Zealand’s first Zero-Cost Superhome is on the market!

Insulation Heat Loss Diagram

Addington is home to New Zealand’s first Superhome, the first home in New Zealand designed and built to the highest possible Homestar rating – 10! The Homestar rating from the New Zealand Green Building Council takes into account energy use, ventilation, water, waste, health and comfort. Only two other houses in the country have reached a 10 since this home’s completion in 2015. Most standard new builds in New Zealand would reach only a 3 or 4 rating. This Superhome brings in Zero cost power bills. It is so energy efficient that it receives credits from the power company over the summer months.

Architectural designer Bob Burnett is selling the three-bedroom, two-bathroom home situated in historic Church Square in Addington, Christchurch. His innovative house sits in place of an earthquake damaged cottage. According to Burnett (Superhome Movement co-founder) the home formed part of a vision for demonstrating healthier homes and more sustainable ideals for an energy efficient, low carbon future. For the last five years it was made available to the public as a demonstration home and is now on the market. “The aim was to demonstrate that smarter designed and better built, affordable, warm comfortable healthy homes were easily achievable using better techniques and commonly available materials,” Bob says.

Insulation Heat Loss Diagram

Designed to provide the best possible living experience in a compact footprint, the 140sqm home fits a small 285sqm site – although Burnett says its design feels bigger. Environmentally certified natural materials are used to achieve the 10 homestead rating, along with innovative technology not common in typical New Zealand homes. Under the stairs a concealed storage cupboard contains a large hot water cylinder that acts as a heat sink, a solar PV inverter and batteries. An enlarged landing at the top of the stairs allows for a home office space and circulation to the three bedrooms and bathroom. The bottom three stairs have been turned into drawers for footlockers.

Insulation Heat Loss Diagram

Additionally the sustainable home features 18 solar panels, rainwater and grey water systems, a carport with an electric vehicle charging outlet and black tiles around the perimeter to assist with solar gain. The ‘super-insulated’ home includes R10 ceilings, R4 walls and an R3.6 floor rating. Solar wall and heat exchange fresh air ventilation and the concrete floor is fully insulated and heated with solar powered hot water. Recessed PVC durable windows with thermal bridging to reduce heat loss and mould growth.

Listing agent Steven Ell from Harcourts Holmwood says that the home would be wonderful to live in with the combination of heating, insulation and ventilation making for a very comfortable environment.

Insulation Heat Loss Diagram

Adapted from Joanna Davis, Want zero power bills in a suburb voted New Zealand’s best? Try this ‘Superhome’ for sale for the first time.

Got questions? Call us on 03 384 9001 or Request a FREE Consultation

From rags to riches – the power of insulation

Insulation Heat Loss Diagram

Owners of a farm property in Banks Peninsula saw potential in their neglected milking shed, so called in Walker Architecture designer Pete Hodge, Christchurch. Hodge came to take a look to find a structurally sound shed equipped with solid concrete columns and beams. Together they decided to transform the milking shed into a classic, glamorous home.

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Fed up with feeling cold and damp in their own large, ageing farm house on the same property the couple wanted to downsize. They wanted to do their own research and be involved throughout the process with knowledge on how the house would operate and breathe. “The clients were very driven to be informed,” Hodge explained.

The milking shed’s concrete structure allowed for absorption and storage of heat, meeting healthy home and energy efficient standards. Peeled right back to its skeleton rigid foam insulation was installed within the building’s walls, floor and ceiling. Windows and doors were positioned to minimise heat loss. Hodge explains that when the air temperature cools, the heat absorbed by the concrete is released back into the room where the insulation prevents it from escaping.

Insulation Heat Loss Diagram

The couple found it difficult to come to terms with the fact that they would not need to keep the large existing log burner, nor make space for storing wood due to the well-insulated design. They decided on a small fireplace purely for a comfy, cosy ambience. The couple didn’t like the idea of a new townhouse. They wanted context and narrative, which with the limited palette of materials and simple ‘L’ shape was achieved. The simplicity of the house and its original foundations maintain its connection to its rural environment and farm surroundings.

Adapted from Colleen Hawkes, Derelict milking shed converted into stunning eco farmhouse

Got questions? Call us on 03 384 9001 or Request a FREE Consultation