The Australian regions outperforming the capitals for energy efficient housing
An unlikely Australian region is leading the energy efficiency charge for residential construction, while one major capital lags behind
2 min
New Australian homes are far more energy efficient than those built previously, a new report from CoreLogic has shown. The report, Amped Up: How energy efficient are Australian
Homes?’ has taken data from CoreLogic and checked it against metrics generated by the CSIRO’s RapidRate™ product to reveal that houses built after 2010 achieved a media star rating of 5.9 out of a possible 10. This compares with a median rating of 2.8 stars for homes built prior to 2010.
The most energy efficient region overall was the ACT, with a median star rating of 6.1. Within the ACT, the region of Molonglo had the highest rating. Positioned halfway between Yarralumla and Stromlo Observatory, Molonglo is the newest district in the ACT and is still under development. It is the only region nationally with a star rating of 6 or above for all dwellings.
The ACT dominated the top 30 list of most energy efficient suburbs. In contrast, Sydney and Hobart were notably absent from the top 30 list, although the report noted that there was a high level of variation across both cities. Sydney and Hobart are also the oldest cities in the country, with some housing stock dating back to the early 19th century. The report noted that demand for heating was also strongest in Hobart, which also had the lowest dwelling completion to population ratio. Heritage restrictions were also identified as a factor.
At a micro level, the Sydney suburbs of Blacktown-North and Bringelly-Green Valley recorded the highest ratings for NSW, with a median of 5.2 stars. In Victoria, the Surf Coast-Bellarine peninsula performed well, with the suburbs of Armstrong Creek, Curlewis and Mount Duneed all showing a median rating of 6 stars or higher.
Given Australian housing accounts for 24 percent of electricity use and 10 percent of carbon emissions, CoreLogic’s Head of Banking & Finance Solutions Tom Coad said it was vital that standards set in the National Construction Code were adhered to.
“The significant difference in energy efficiency between relatively modern homes and older homes can largely be attributed to changes in the National Construction Code
which has progressively placed more emphasis on energy efficiency requirements for newly built homes,” Mr Coad said.
“The Coalition’s recent push to pause the National Construction Code for 10 years flies in the face of Australia’s commitments to reduce carbon emissions.”
“Policymakers should be incentivising the construction of energy efficient buildings, not slamming the breaks.”
The report was compiled using the Nationwide House Energy Rating Scheme (NatHERS) star rating system. Research director at CoreLogic, Tim Lawless, said it was important to continue to monitor the energy efficiency of housing construction.
“What gets measured gets done,” he said. “As standards for energy efficient design and construction rise, it’s also becoming more important to measure energy resilience in
our housing stock.
“Minimum energy efficiency standards for new builds will continue to be important in supporting Australia’s greenhouse gas reduction targets, but there is likely to be
increasing focus and incentives on established housing where most of Australia’s housing stock was built prior to recent minimum standards.”
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A five-bedroom Palo Alto home designed by Steven Ehrlich is listed for $44 million, making it the city’s most expensive listing. Built around a dramatic concrete spine, the home features four courtyards and a pool.
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For years, tech entrepreneur Asher Waldfogel and his wife, Helyn MacLean, dreamed of building a modern house in Palo Alto, Calif.
The couple, however, worried about clashing with the Mediterranean-style architecture typically associated with their neighborhood of Old Palo Alto.
So they tapped architect Steven Ehrlich to create a design that paid homage to its surroundings with stucco, mahogany and titanium zinc cladding. They spent $20 million over several years building the house, completed in 2005.
Now looking to be closer to their adult daughter on the East Coast, they are putting the five-bedroom home on the market for $44 million—the most expensive listing in Palo Alto.
Waldfogel is an angel investor who co-founded Redback Networks, a telecommunications-equipment company. MacLean previously had a career in fundraising.
The couple purchased the roughly 0.4-acre site for $7.1 million in 2000 and demolished a circa-1930s Spanish Colonial home. The house they built pinwheels around a central staircase. It has 7,900 square feet of livable space, with four distinct courtyards and a pool.
A key feature of the home is a cast-in-place concrete wall, or spine, that is two stories high and about 80 feet long. “There’s a little bit of controlled chaos in what comes out of the form,” unlike a perfectly uniform surface, Waldfogel said. “If you want that, you do it in plastic.”
Waldfogel said he and his wife are thinking about the next phase of life now that their daughter is grown, although they have not decided where they will move. They also have a home in Sun Valley, Idaho.
“Right now we’re just trying to emotionally let go and decide what to do next,” he said.
Palo Alto, an epicenter of venture capital and tech startups in Silicon Valley, is home to some of the country’s biggest tech titans. Sales volume and prices are rising, with a median sale price of $3.5 million for the three months ending in August, up 5.8% year-over-year, according to real-estate brokerage Redfin.
Arthur Sharif of Sotheby’s International Realty—San Francisco Brokerage has the listing.
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