Deca Architecture's London apartment merges playfulness and connectivity
An abstract feature staircase at the heart of a London apartment brings fun to a residential redesign by Athens-based practice Deca Architecture, while cleverly uniting private and communal spaces

A wide timber slide with a built in staircase connects the floors of this unconventional, two-bedroom apartment in London designed by Greek practice Deca Architecture.
Designed for a long-time client and friend of the practice, the 140 sq m home is spread across the first and second floors of an Edwardian London terrace house in Chelsea. Formerly two separate flats, the new larger apartment is an imaginative amalgamation of the two, executed in a tactile material palette of aged oak, metal and marbles.
Most notably, Deca decided to buck the tradition of placing social spaces on the lower floor and private spaces on the upper. Instead the studio created a layout that blends the two across both floors.
‘A lot of London conversions are very formulaic, so we asked ourselves: how do we break this paradigm while creating something totally unique for our client?' explains Carlos Loperena, who founded DECA alongside Alexandros Vaitsos.
The main bedroom with its unusual octagonal plan, is positioned on the second floor at the front of the apartment above the living room. Meanwhile the guest bedroom and bathroom are tucked away under the dining and kitchen areas at the rear.
The wedge-shaped, oak-lined slide that connects the living room and the dining area serves as a carefully-scaled spatial tool, allowing light to filter through to the lower floor while also concealing the apartment's utilities and a WC.
‘The idea was to maximise the light and enhance the connection between the front and back of the apartment in all of the primary spaces,' said Loperena. ‘To have so much light within an apartment in London is quite extraordinary.'
The firm’s desire to balance quality of light with smooth circulation is also apparent in the use of an interior sash window in the main bedroom – it allows the room to benefit from both the morning and the evening light while maximising on space.
For Deca Architecture, the creation of a total experience is the most crucial part of the project, says Loperena: ‘The strength of these subversive elements lie in their ability to create both a sense of familiarity and surprise.'
INFORMATION
Wallpaper* Newsletter
Receive our daily digest of inspiration, escapism and design stories from around the world direct to your inbox.
Ali Morris is a UK-based editor, writer and creative consultant specialising in design, interiors and architecture. In her 16 years as a design writer, Ali has travelled the world, crafting articles about creative projects, products, places and people for titles such as Dezeen, Wallpaper* and Kinfolk.
-
What is the role of fragrance in contemporary culture, asks a new exhibition at 10 Corso Como
Milan concept store 10 Corso Como has partnered with London creative agency System Preferences to launch Olfactory Projections 01
By Hannah Tindle Published
-
Jack White's Third Man Records opens a Paris pop-up
Jack White's immaculately-branded record store will set up shop in the 9th arrondissement this weekend
By Charlotte Gunn Published
-
Designer Marta de la Rica’s elegant Madrid studio is full of perfectly-pitched contradictions
The studio, or ‘the laboratory’ as de la Rica and her team call it, plays with colour, texture and scale in eminently rewarding ways
By Anna Solomon Published
-
A Danish twist, compact architecture, and engineering magic: the Don’t Move, Improve 2025 winners are here
Don’t Move, Improve 2025 announces its winners, revealing the residential projects that are rethinking London living
By Ellie Stathaki Published
-
This Hampstead house renovation in London transcends styles and periods
The renovation of a Hampstead house in London by Belgian architect Hans Verstuyft bridges the classic and the contemporary
By Harriet Thorpe Published
-
London’s Sloane Street has been transformed into a ‘green boulevard’
Iconic shopping destination Sloane Street has had a facelift, now boasting wider pavements, enhanced seating and lighting, and a massive planting scheme
By Anna Solomon Published
-
New book takes you inside Frinton Park Estate: the Essex modernist housing scheme
‘Frinton Park Estate’, a new book by photographer James Weston, delves into the history of a modernist housing scheme in Essex, England
By Ellie Stathaki Published
-
Conran Building's refresh brings a beloved London landmark into the 21st century
Conran Building at 22 Shad Thames has been given a new lease of life by Squire & Partners, which has rethought the London classic, originally designed by Hopkins, for the 21st century
By Ellie Stathaki Published
-
Inside Powerhouse: The redevelopment of Lots Road Power Station, which once fuelled the London Underground
The twin-turreted building has followed in the footsteps of Battersea Power Station, being transformed into luxury homes and retail units
By Anna Solomon Published
-
Sadler’s Wells East opens: ‘grand, unassuming and beautifully utilitarian’
Sadler’s Wells East by O’Donnell and Tuomey opens this week, showing off its angular brick forms in London
By Tom Seymour Published
-
2025 Serpentine Pavilion: this year's architect, Marina Tabassum, explains her design
The 2025 Serpentine Pavilion design by Marina Tabassum is unveiled; the Bangladeshi architect talks to us about the commission, vision, and the notion of time
By Ellie Stathaki Published