Mork-Ulnes designs Corten house for a food entrepreneur in the Sonoma Valley

Designed as a cooking laboratory, a pad for entertaining, a city escape and a full-time residence, Mork Ulnes architects’ Triple Barn house in Sonoma may have just three gabled roofs, yet it spans plenty of functions. The house was designed for creative chef and food educator, Hollie Greene Rottman, founder of JoyFoodly and director for California Wellness in the Schools, who was seeking a place for inspiration and productivity, and most importantly a home for her family.
Beneath the three roof peaks, a whole landscape of activities play out, made possible by the open plan space. When designing the plan, San Francisco and Oslo based Mork-Ulnes Architects defined three zones: workshop, retreat, and forum. These were relevant to the uses needed by Greene Rottman, and were also associated with the architectural typology of the farm, which is commonly found in the Sonoma Valley area.
The ‘workshop’ space is the kitchen, kitted out with open-faced drawers, a hidden pantry, a honed Carrara kitchen top and a handmade walnut farm table – designed for hosting cooking seminars, experimentation, dinner parties and the average mid-week family dinners too. The space flows outside naturally onto a wooden deck, where there is a bar and grill area sheltered beneath a cantilevered eave. This ‘open-air living room’ is just in reach of the five-bed vegetable garden and overlooks the rest of the estate.
While it is a beautiful space, for Greene Rottman, the kitchen was mostly about function: ‘A few elements were important to us – space to prep food together and have space to move freely but smartly, to have everything within easy reach, which by definition doesn’t require great space, just well thought-out design.’
The private living quarters of the couple form the ‘retreat’ space, facing east towards the morning sun, while the ‘forum’ joins these two spaces together with a wood-burning stove and windows over-looking Sonoma’s rolling hills. More warmth is brought to this homely space by vintage light fixtures, orange chairs, and treated Douglas Fir flooring selected to a ‘dusty sunbleached palette’. So while the roofs above subtly define each area, the relaxed nature of the plan creates a sense of flow through the house – enhanced further by Mork-Ulnes Architects’ trademark balance of Scandinavian and Californian design principles.
For the exterior of the house, husband-and-wife partners Casper and Lexie Mork-Ulnes lifted inspiration directly from the Sonoma Valley context. They drew from the local agricultural vernacular architecture and the colour of the rocky land itself: ‘We chose Corten steel as the cladding material for its natural resistance to fire as well as its resonance to agricultural buildings of the Sonoma Valley. The natural soil of the Sonoma hillside is very iron-rich which gives it a rusted color making the house tie back to earth,’ says Casper Mork-Ulnes.
Entry to the house is via its concrete base, where there is a carport and a winding stairway that leads up and into the heart of the home. This was devised because of the steep slope that the house is situated on – while ensuring direct property access for fire trucks in this, unfortunately, wild-fire prone part of the world.
INFORMATION
Wallpaper* Newsletter
Receive our daily digest of inspiration, escapism and design stories from around the world direct to your inbox.
Harriet Thorpe is a writer, journalist and editor covering architecture, design and culture, with particular interest in sustainability, 20th-century architecture and community. After studying History of Art at the School of Oriental and African Studies (SOAS) and Journalism at City University in London, she developed her interest in architecture working at Wallpaper* magazine and today contributes to Wallpaper*, The World of Interiors and Icon magazine, amongst other titles. She is author of The Sustainable City (2022, Hoxton Mini Press), a book about sustainable architecture in London, and the Modern Cambridge Map (2023, Blue Crow Media), a map of 20th-century architecture in Cambridge, the city where she grew up.
-
Pierre Yovanovitch’s set and costumes bring a contemporary edge to Korea National Opera in Seoul
French interior architect Pierre Yovanovitch makes his second operatic design foray, for The Marriage of Figaro in Seoul
By Tianna Williams Published
-
The best hotels in Hong Kong
From sky-high glamour to intimate design sanctuaries, here's our pick of Hong Kong's finest stays
By Lauren Ho Published
-
Stay in a Parisian apartment which artfully balances minimalism and warmth
Tour this pied-a-terre in the 7th arrondissement, designed by Valeriane Lazard
By Ellie Stathaki Published
-
Heritage and conservation after the fires: what’s next for Los Angeles?
In the second instalment of our 'Rebuilding LA' series, we explore a way forward for historical treasures under threat
By Mimi Zeiger Published
-
Why this rare Frank Lloyd Wright house is considered one of Chicago’s ‘most endangered’ buildings
The JJ Walser House has sat derelict for six years. But preservationists hope the building will have a vibrant second act
By Anna Fixsen Published
-
Buy a slice of California’s midcentury modern history with this 1955 Pasadena house
Conrad Buff II Residence has been fully restored and updated for the 21st century
By Jonathan Bell Published
-
Step inside a writer's Richard Neutra-designed apartment in Los Angeles
Michael Webb, invites us into his LA home – a showcase of modernist living
By Michael Webb Published
-
Join our world tour of contemporary homes across five continents
We take a world tour of contemporary homes, exploring case studies of how we live; we make five stops across five continents
By Ellie Stathaki Published
-
The Architecture of Seduction: how Horace Gifford built a modernist, queer paradise
Fire Island is explored through a new edition of Christopher Rawlins’ seminal architectural and social history book on the life and work of Horace Gifford
By Jonathan Bell Published
-
Step inside this furniture gallerist's live-work space by Steven Holl in upstate New York
Designed by Steven Holl for modern furniture gallerists Mark McDonald and Dwayne Resnick, this live-work space in upstate New York is a midcentury collector’s paradise
By Michael Webb Published
-
Remembering architect Ricardo Scofidio (1935 – 2025)
Ricardo Scofidio, seminal architect and co-founder of Diller Scofidio + Renfro, has died, aged 89; we honour his passing and celebrate his life
By Ellie Stathaki Published