Carol and Ken’s home in Leura takes advantage of, and protects, the natural landscape. (Photo: Brett Boardman)
Story by Linda Moon
Ken and Carol’s home in Leura offers insights into sustainable building design we can all take inspiration from.
Key Points:
- Most Blue Mountains homes aren’t built for the local environment.
- Sustainable housing is more than solar panels and water tanks.
- By understanding and working with nature we can reduce energy costs and help the environment.
Perched on the hillside, a slate-coloured building blends into the landscape. There are no signs of a concrete drive, garage or fencing: those Aussie architectural mainstays. Instead, a mulched path meanders through conifer trees.
This isn’t your average property. Designed by architects Ken Yeh and Carol Marra (the multi-awarded Marra + Yeh), it has a lot to teach us about how to design alongside nature, for the planet and ourselves. It’s a journey so many of us are interested in.
Building with the environment in mind
The duo studied architecture at the University of Texas (where they met).
Ken:
Ken grew up around the tropical jungles of Malaysia and is both tutor and guest critic at the University of Sydney and UNSW. “I have a benchmark in my head of how things should be in a mature and stable eco-system. It’s a feeling. You go into a pristine place; all your senses can tell you. You can hear it; you can feel it.” His goal in designing is to try to discover what a place was originally like, then how to enhance it.
Carol:
Carol, who is originally from Argentina, also has a deep understanding of place. She also tutors and is a guest critic at the University of Sydney and UNSW. Carol says sustainable, ecological design (which the pair specialise in) starts with considering everything outside your piece of land and thinking holistically. “Across the street from us is a creek. We understand what happens here affects the waterway and the animals that drink it. So, it’s big picture thinking,” she says.
It’s also about making buildings that can survive the changing climate conditions, plus respond to the energy crisis.
Two windows promote cross ventilation and natural sunlight while storage is a must. (Photo: Brett Boardman)
The house that Ken and Carol built
Elevated above a hanging swamp, the home’s design allows water to seep unimpeded down into the creek.
Caring for the land flows both ways. By not blocking the water’s path they avoid flooding and dampness, Carol says. Another perk: the relaxing sound of running water.
Inside, things are equally interesting. In the ‘mud-room’, as they call their entry, there’s a bench, washing machine, clothing rack and fridge. Here, dirty and wet clothing are discarded and shoes exchanged for slippers. It turns out the freezer is located here to reduce energy use: it’s the coldest zone of the house.
Sustainable architects Ken Yeh and Carol Marra at home. (Photo: Linda Moon)
Beyond solar panels and tanks
“Sustainable design is not just about adding on; it’s not just about buying solar panels,” Carol emphasises.
Our starting point should be to make use of everything nature gives us for free, Ken says. This includes sunshine (warmth), breezes (which cool), soil (for creating gardens) and water.
Every part of the building is planned consciously. Bedrooms are located on the south (least sunny side) of the building. “Sleeping in a cold room is better for you,” Carol says. And, being further from the road, it’s also quieter.
The bathroom is designed for multiple use with separate compartments for hand-basin, toilet and showering. The latter includes an adjustable-size wooden Japanese bathtub (designed by the pair) and an expansive window that looks out onto 3D art courtesy of nature: trees, occasional wallabies and birds.
Bathing with the window open allows airflow to remove humidity and condensation.
“You need to identify the gifts [of nature] and accept them humbly.” – Ken Yeh.
Large north-facing, double-glazed windows harness the sun’s heat and light. (Photo: Brett Boardman)
Passive design
Designing with your local climate in mind is known as ‘passive design’. Some understanding around science, like wind direction and the sun’s angle, helps here, Carol adds.
To capture free heat from the sun, the main living zones are situated in the north. Large, double-glazed, north facing windows allow sunlight to penetrate deep into the rooms. On sunny days these don’t require artificial heating, which equals lower energy costs and CO2 emissions.
When it’s hot they open the windows to the breeze or use blinds to block the sun. “It’s a way of calibrating your building to what’s happening outside,” Ken says.
The rooms are also designed to be compartmentalised to keep the heat in. “In winter you create smaller spaces; in summer bigger spaces,” Carol says. “You live in nature.”
The living area opens up to an outdoor space with a kitchen and insect-proof screens that allow them to take advantage of any cooling breezes on hot summer nights.
In the mountains most winds come from the west. Thus, the house has few windows facing west.
“Look at nature first. The water flows under, the wind flows over.” – Ken Yeh.
Space for a wok BBQ. The indoors and outdoors blend seamlessly thanks to clever use of glass and almost invisible insect screens. (Photo: Brett Boardman)
Designing for flexibility and change
Other important features of the home include built-in storage cupboards and enormous doors between several rooms. This allows for flexibility. Rooms can be opened up to become bigger or used for a different purpose.
It’s about designing alongside time, Ken says. How we work and study, for instance, has changed; the composition of families changes, Carol says. The ability to enable change without too much pain adds value to a building.
Large doors allow spaces to be merged, enlarged and compartmentalised. (Photo: Brett Boardman)
Challenges for mountains homes
Unfortunately, few buildings in the Blue Mountains (or beyond) are designed sustainably.
“It’s a very extreme climate and we don’t make people design for this in our policies,” Carol says. The result is that many of us suffer in cold homes inappropriate for the climate with the knock-on of high heating bills. It’s a housing legacy we continue to pass onto the next generation, Carol says.
Other big challenges facing our housing (and thus our wellbeing) are affordability and lack of suitability. “The marketplace tends to cater for two types of homes: low-density, single-family dwellings and high-density apartments,” Carol says.
Housing, like nature, needs to be biodiverse. This means having housing styles that cater to extended families, older people and others.
Retrofitting your home
Integrating where we live with nature is something we can all do, Carol says. “We have a lot of opportunities to change things and do things better.”
As a starting point, they recommend focusing on the skin of your building with insulation, sealing and draught proofing. Improve the performance of any poor-quality windows. If you can, create an enlarged, double-glazed window in the north of your home.
This way you won’t need as many solar panels. “It’s like putting a jacket on before you blast the heater,” Carol says.
“You can do something at any scale that’s positive and impactful” – Carol Marra.
Harmonious exterior of the home office. Minimal impact upon and maximum gain from the environment. (Photo: Brett Boardman)
Take Action:
- Make your home more water and energy efficient.
- Protect and enhance the landscape around you.
- Integrate nature’s gifts into your home.
Share this article:
This story has been produced as part of a Bioregional Collaboration for Planetary Health and is supported by the Disaster Risk Reduction Fund (DRRF). The DRRF is jointly funded by the Australian and New South Wales governments.
More from around the region
Delicious plant based and gluten free pastries courtesy of Clean Cravings at World Animal Day today at the Blue Mountains Planetary Health Centre. Such a lovely day! #planetaryhealth #worldanimalday
Paul Nagle and other members of the Blue Mountains Bird Observers leading 40 people on a Guided Breakfast with the Birds as part of World Animal Day at the Blue Mountains Planetary Health Precinct. It`s a stunning day. Lots more to come at 33-39 Acacia St Katoomba.
A huge thank you to Josh Logan from Logan Signs, Lithgow, for installing our Circular Water Signage in time for our World Animal Day Celebration today at the Blue Mountains Planetary Health Centre (33-39 Acacia St Katoomba). We have a full program of events with lots of information on how to prepare for the summer ahead and how to create urban areas that help us share our home respectfully with all species. It will be a fun family day too with storytime, craft and live music for kids! (Link in profile) #worldanimalday #planetaryhealth #familyday #katoomba #bluemountains
And our Wild Life exhibition is now up for World Animal Day tomorrow at the Blue Mountains Planetary Health Centre. Photographs by Warren Hinder, Merryl Watkins, Holly Kent and Tracy Burgess. Check out all the other events from stalls, talks, possum box demo, kid`s craft and animal storytime, plant based food and live music to Bushcare. @33-39 Acacia St Katoomba Link in profile. #planetaryhealth #worldanimalday #katoomba
Join the Blue Mountains Planetary Health Initiative at World Animal Day this Saturday 5 October for a discussion on the history of the Plant Based Food Movement in Australia and a discussion of exciting contemporary trends. It will be followed by a Plant Based Cheese Degustation to launch the Plant Inspired Community Cooking Project. This will be a series of cooking classes to introduce the community to plant based cooking techniques. The event is free but places are limited so bookings essential (link in profile): https://bit.ly/3Bzbwhu
#plantbasedcooking #worldanimalday #bluemountains #katoomba #planetaryhealth #communitycooking
We share the Blue Mountains with so many extraordinary beings but have you seen them and do you know their names? Do you know the difference between a Royal Spoonbill and an Eastern Shrike-tit, or the difference between a bandicoot and an antechinus? Come and check out our Wild Life Exhibition at World Animal Day this Saturday to learn more from the stunning photographs by Warren Hinder, Merryl Watkins, Holly Kent and Tracy Burgess. There will be also be a Breakfast with the Birds at 8.30am, Animal Storytime and Craft for kids from 10am, stalls, talks, food and live music. The day is free but please book via Eventbrite to help us cater (link in profile): https://bit.ly/4eMhbz0 @bluemountainswalks @merrylwatkinsphotography @bestofbluemountains
#royalspoonbill #easternshriketit #wildlife #birdsofthebluemountains #bluemountains #katoomba #worldanimalday #biodiversity #planetaryhealth
To coincide with the first day of Bushfire Season we launched Air Watch at the Planetary Health Centre yesterday. For the last seven years Blue Mountains Unions & Community have been working tirelessly to ensure residents of the Blue Mountains and Lithgow are able to measure and track the quality of the air we breathe. The Blue Mountains Planetary Health Initiative has worked closely with them over the last year and now there are 20 PurpleAir monitors distributed throughout the Blue Mountains and Lithgow, including one at the Planetary Health Centre. You can now view real time air quality measurements at each of our local news sites and on the Purple Air Map https://map.purpleair.com We have 10 more sensors available, so if you’d like to install a sensor, members of BMUC will be at World Animal Day at the Planetary Health Centre this Saturday 5 October to take applications and share more information about the project. Bookings for World Animal Day here (link in profile): https://www.eventbrite.com.au/e/world-animal-day-promoting-respectful-cohabitation-tickets-1029328889417
It was a fabulous day yesterday as each speaker highlighted how critically important this project is: Dr Rosemary Dillon CEO of Blue Mountains City Council Trish Doyle MP Dr Jenna Condie from Blue Mountains Parents for Climate Dr Maggie Davidson, environmental scientist from Western Sydney University Matthew Riley, Director Climate and Atmospheric Science from NSW Department of Climate Change, Energy, the Environment and Water and Peter Lammiman and Ann-Maree McEwan from the BMUC’s Airwatch Committee.
@bluemountainsunionists @nswdcceew @bluemountainscitycouncil @westernsydneyu @trishdoylemp @parentsforclimatebluemountains #airqualilty #airqualitymonitors #bluemountains #planetaryhealth
Treat yourself this weekend with a fun-filled and informative World Animal Day event at the Planetary Health Precinct in Katoomba. As well as a Breakfast with the Birds, stalls and a possum box demonstration, there will be a fabulous wildlife exhibition with photos by Warren Hinder, Merryl Watkins, Tracy Burgess and Holly Jayne; live music with Mem Davis, Joe Flood and Duck Keegan; lots of fun for kids with Sharon Baldwin and Naomi Crew leading animal storytime and craft with Julie Refferty; delicious plant based, gluten and dairy free treats, pastries and donuts from Clean Cravings; a plant based cheese degustation and warming Dahl, rice roasted cauliflower with veggies, pakoras, tamarind chutney, and salad courtesy of Bibi’s Kitchen. Come and learn more about Blue Mountains Bird Observers, Blue Mountains Conservation Society, WIRES, Action for Animals Blue Mountains and Animal Sanctuaries, Wombat Rescue, the Women’s Shed, and Animal Welfare Laws in Australia.
Guest speakers throughout the day will include Elizabeth Ellis, lecturer and author of Australian Animal Law; Hal Ginges, a local lawyer and animal activist from Action for Animals who advocates for animal rights and raises money for sanctuaries; Mark Berriman who has been President of the Australian Vegetarian Society NSW since 1989, as well as Co-ordinator for Animal Liberation NSW, Director of the Natural Health Society of Australia and the World League for Protection of Animals; and Teya Brooks Pribac, a researcher in the area of animal studies and the award-winning author of Enter the Animal. She’s also published Not Just Another Vegan Cookbook and will be sharing her culinary skills with the community in the Plant Inspired Community Cooking Project.
The event is free but please book your place to help us cater (link in profile): https://www.eventbrite.com.au/e/world-animal-day-promoting-respectful-cohabitation-tickets-1029328889417
#worldanimalday #plantbased #planetaryhealth #katoomba #bluemountains
We are so looking forward to kicking off World Animal Day Celebrations on Saturday 5 October with an 8.30am Breakfast with the Birds. Join Paul Nagle from the Blue Mountains Bird Observers on a guided bird walk around the Planetary Health Precinct visiting different habitats on the site to observe and talk about the birdlife that is resident and that visits the site. Binoculars are highly recommended.
World Animal Day will be an inspiring family day celebrating the extraordinary diversity of animals we share our world with! The theme is `Promoting Respectful Cohabitation`. Bookings for the Breakfast with the Birds (link in profile)
or here:
https://www.eventbrite.com.au/e/breakfast-with-the-birds-tickets-1028664983657
#birdlife #breakfastwiththebirds #katoomba #worldanimalday #bluemountains #planetaryhealth #respectfulcohabitation
We all need clean air to breathe, but how can we tell how clean our air is?
Thankfully the Air Watch subcommittee of Blue Mountains Unions & Community has worked for years to find ways to help us measure the quality of the air we breathe. Over the past year the Blue Mountains Planetary Health Initiative has worked with them to install Purple Air Quality monitors across our bioregion from Lithgow to the Lower Mountains. You can now view real time air quality on each of our Local News Sites!
Air Watch`s Purple Air quality monitors give the Blue Mountains` 78,000 residents, workers and 3 to 5 million/year visitors the power to make timely, informed decisions about their activities and health. It will also be a reliable source of data for the scientific community.
To coincide with the start of the Bushfire Season on Tuesday 1 October, we`re inviting the whole community to join us to launch Air Watch Blue Mountains and Lithgow at the Planetary Health Precinct. If you`d like to join us book a place here https://bit.ly/4dp2qko (link in profile)
#airquality #purpleair #bluemountainsunionscouncil #planetaryhealth #bluemountains #katoomba #bushfireseason
Today`s the day for the Blue Mountains Sustainability Festival! @bluemtns_sustainability_fest
We`ll be at the Speakers Forum at the Blue Mountains Cultural Centre at 10.15, talking about volunteer opportunities with the Blue Mountains Planetary Health Initiative, and then giving a presentation at 2.30pm. There`s a jam-packed speakers program, community stalls and workshops, and a Shopping Trail through Katoomba and Leura. You can find more information on the website at https://resilientbluemountains.org/sustainability-festival/
#sustainability #slowfashion #slowshopping #fashiontrail #circulareconomy #planetaryhealth #community #katoomba
Our newsletter is out! Read about the Blue Mountains Sustainability Festival this Saturday, the Air Watch Launch next Tuesday and the upcoming World Animal Day: Promoting Respectful Cohabitation Event at the Planetary Health Precinct on 5 October. And check out the comprehensive Springwood & Lower Mountains Repairers Guide (link in profile): https://bit.ly/3TJiKFR
You can subscribe to receive this newsletter via any of our local news sites.
#sustainability #biodiversity #worldanimalday #airwatch #airqualitymonitors #sustainablefashion #circulareconomy #planetaryhealth
