PassivPod Eco Cabin
Futurebuild offsite award winner 2020
An ultra-low energy pod for work, rest and escape
Originally conceived as a competition entry for the 2014 Sunday Times and British Homes EcoHaus design brief, the PassivPod began as an imaginative concept for ecological lakeside holiday accommodation. Our shortlisted proposal explored how design could meet exceptional sustainability standards while creating a visually iconic and organic form.
The result was the PassivPod: an elegant, ellipsoidal structure whose distinctive shape wasn’t just aesthetic — it was born from thermal logic. The smooth curves reduce heat loss, optimise solar gain, and help the pod blend seamlessly into natural surroundings. Its form reflects both performance and harmony with the landscape.
Since its inception, the PassivPod concept has evolved into a versatile series of single-storey units, now available in various sizes to serve as garden offices, eco holiday lets, educational spaces, and more. What unites them is a commitment to Passivhaus principles: ultra-low energy use, excellent air quality, and year-round comfort with minimal heating — even on the coldest days.
Constructed from a plywood rib framework, the pods are super-insulated with natural cellulose, sealed for airtightness, and elevated on stilts, allowing installation on sloping or uneven terrain. The exterior is clad in Western Red Cedar shingles, chosen for their durability and natural weathering, while a triple-glazed glazed front screen brings in light and passive solar warmth. An integrated heat recovery ventilation system ensures fresh, filtered air and consistent comfort inside.
Every material used has been carefully selected for its low embodied energy and non-toxic properties, resulting in a building that supports both environmental sustainability and occupant wellbeing.
The PassivPod is a forward-thinking response to the changing way we live and work — offering a space that is beautiful, energy-efficient, and built for a healthier future.
"Mark came up with a wonderful design which maximises the natural attributes of our rural site”
Geoff & Gail Aucock
“Mark’s contribution has been invaluable. I have recommended him to others and I would be happy to work with him again”
Ruth Stoton
“Mark has been very straight-forward and professional and has given me sound practical advice.”
Roger Ross
“Working with Mark was a fantastic experience from start to finish. We couldn't have been happier with the end result.”
Andrew & Emma Wilkie
"It's his quiet confidence that makes you feel more confident about what it is you’re doing. We would definitely recommend working with Mark from Koru."
Adele O’Hehir
"Koru Architects have been a 'breath of fresh air’ in helping me develop my concept and taking this through to design."
Gino Fox
"Mark’s designs have been very innovative, making good use of a difficult site. His service has pleased me enormously!"
Herb Etkin
Ready to discuss a project? Get in touch today.
01273 204065
info@koruarchitects.co.uk
Studio 221, 91 Western Road,
Brighton and Hove, BN1 2NW
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