INTERESTING ARCHITECTURE TRENDS
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WHY ARE THESE TRENDS COMING BACK AGAIN?
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WHAT TRENDS DO WE EXPECT TO START GROWING IN THE COMING FUTURE?
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WHY IS IMPORTANT TO STAY UP TO DATE WITH THE ARCHITECTURE TRENDS?
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WHAT IS YOUR NEW FAVORITE ARCHITECTURE TREND?
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Originally published by BBC | StoryWorks
November 11, 2020
When he had the opportunity to build his dream house in Japan, Kevin Meyerson knew he wanted it to be sustainable, comfortable and affordable.
Meyerson, an American technology executive who has lived in Japan for 25 years, decided to build a “Passive House” in Karuizawa, a mountain town 129km northwest of Tokyo, in 2012. For four years in a row it was ranked Japan’s most energy-efficient house.
Passive House (or Passivhaus in German) is a sustainable building standard from Germany that prioritises energy efficiency and good air quality. To achieve the Passive House certification, buildings must meet a set of strict criteria. Total household electricity must not exceed 120 kilowatts per hour per square metre of living space and indoor temperatures must not go above 25°C for more than 10% of hours annually.
Meyerson’s house is built from wood, insulated with a glass wall and coated with steel. It has 28cm of insulation in the walls, 60cm in the roof and triple glazed windows. This makes the house “extremely comfortable”, says Meyerson.
In a typical building, around 30% of heating and air conditioning is lost through the windows, according to the Green Building Alliance. The extreme insulation in a Passive House keeps the temperature consistent throughout the building. “You don’t have cold and hot spots,” says Meyerson. “I sleep really well and I don’t get sick.”
A study by the University of Tokyo found that during the summer there was less than a 2°C temperature difference between the attic and first floor in Meyerson’s home, compared to a 10°C difference in a conventional house.
There are no radiators in the house. In the winter Meyerson burns a bundle of wood twice a week which is enough to keep the entire house warm.
“Last New Year we were away for 11 days. It was -10°C outside at night and the house was not heated. When we got back the house was 10°C,” he says.
A ventilation system pumps fresh air into the house 24 hours a day to keep CO2 levels low. “The air is so clean inside. You can focus more,” Meyerson says.
There is a 4.2 kilowatt solar panel system on the roof of the house which generates eight times more electricity than the Meyersons use, allowing them to charge their electric car for free.
While building a Passive House can cost up to 15% more than a traditional house, living there you spend 90% less on energy bills than you would normally, Meyerson says.
A net zero home in Florida
Building a green home doesn’t have to break the bank, says Taryn Holowka, senior vice president of communications at the US Green Building Council (USGBC).
“A lot of people associate green buildings with high-end and think this is unaffordable for me. It’s really not,” says Holowka.
Holowka notes that 30% of homes certified under LEED, the most widely used green building standard in the world, are considered affordable housing, which can be bought for 30% or less of the household’s income.
“On average LEED-certified homes use 20-30% less energy than a traditional home, with some homes saving up to 60%.”
In Florida, real estate developer Pearl Homes is constructing LEED-certified, affordable homes. “Pearl Homes are a big leader when it comes to green building. They are providing cutting-edge design but making it affordable for everyone,” says Holowka.
A family home covered in solar panels costs under $300,000 (£230,000) and comes with a guarantee of excellent air quality and low energy bills, says founder Marshall Gobuty. People living in a Pearl Home spend $35-50 a month on energy bills, compared to $200 in a similar conventional house, he says.
“Our homes are built like Walmart coolers. There is no way the hot air can come in unless you open a door or window. It keeps the temperature constant and reduces your power consumption,” says Gobuty.
The company has recently built the world’s first home that is both net zero and LEED platinum, the highest sustainability certification. The solar panels on the home generate more electricity than a homeowner uses in a year, meaning that the residents do not pay any energy bills.
“[In the past] if you wanted to have a sustainable home, you had to be rich. We’re delivering these homes to average Americans,” says Gobuty.
Pearl Homes is also building a complex of affordable, net zero rental apartments in Bradenton, 55km south of Tampa, Florida. People can rent “a truly green apartment which generates more power than you consume” for $1350 a month, significantly less than the market rate of $1800, says Gobuty.
5 simple steps you can take to make your home more sustainable:
- Install low flow fixtures in your shower
- Switch to LED lightbulbs
- Seal all gaps in your house
- Buy sustainable cleaning products
- Purchase appliances with an Energy Star rating that use less water and energy