Jewel Box is a Californian project of small scale and big impact
Jewel Box by Red Dot Studio is the reimagining of a Californian 20th-century gem through a creative addition

Jewel Box is a small-scale but high-impact project by Californian architecture practice Red Dot Studio. The scheme, located in the State's Redwood City, came with a brief that outlined the extension of a classic 20th-century gem – a rare, late example of Prairie School architecture (a style made popular by Frank Lloyd Wright).
Step inside Jewel Box by Red Dot Studio
The existing property was created in 1972 by Midwest architect and civil engineer Leo Tonetti. Red Dot Studio was tasked with sensitively adjusting and adding space to the home, which would allow its owners, a Brit and a Greek, to comfortably entertain guests and family – a frequent leisure activity for them.
The result was the creation of an ethereal, daring but well-balanced, glass box to the side of the home, which elegantly juts out over leafy foliage, hovering above a hillside view over the city's Emerald Hills neighbourhood.
The addition helps connect different internal areas of the residence, without compromising the original architecture's integrity and design intention. The project's size is boutique (just 424 sq ft), but it crafts ample space and scope for the home, lending natural light, long uninterrupted views and a sense of generosity of space to the interior.
The architects write in their statement: 'A new stair bay with a glass roof and steel stairs dramatically altered the daylight profile to the lower floor while creating access to the rear yard. The upper floor hall received a new slot skylight, washing one wall in daylight and the other ready for the client’s extensive art collection.'
'We extended the living room by one bay and removed extraneous brick columns, creating linked views and a sense of the hillside panorama. The client’s taste in colour, art, and light completed the vision.'
Wallpaper* Newsletter
Receive our daily digest of inspiration, escapism and design stories from around the world direct to your inbox.
Ellie Stathaki is the Architecture & Environment Director at Wallpaper*. She trained as an architect at the Aristotle University of Thessaloniki in Greece and studied architectural history at the Bartlett in London. Now an established journalist, she has been a member of the Wallpaper* team since 2006, visiting buildings across the globe and interviewing leading architects such as Tadao Ando and Rem Koolhaas. Ellie has also taken part in judging panels, moderated events, curated shows and contributed in books, such as The Contemporary House (Thames & Hudson, 2018), Glenn Sestig Architecture Diary (2020) and House London (2022).
-
Finland has been named the happiest country in the world, again – here’s what to do in this Nordic utopia
If you want a taste of life in a country deemed the happiest in the world for eight years running, be sure to check out Wallpaper* editors’ favourite spots while you’re there
By Anna Solomon Published
-
At Bar Etoile, Scandi-chic meets leisurely Los Angeles
This new Melrose Park joint mixes art-world references, French bistro vibes and an out-of-this-world martini
By Carole Dixon Published
-
These fringed Prada slippers capture a lived-in elegance
Part of Prada’s S/S 2025 menswear collection, these fringed slip-on mules reflect a wider renaissance of the slipper – suggesting the ultimate luxury is to wear your inside attire outdoors
By Jack Moss 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
-
Is the U.S. about to sell dozens of architecturally-significant government buildings?
It depends, the Trump administration says
By Anna Fixsen Published