Two-Up Two-Down House transforms a terrace into an ambitious London home
Mark Bonshek and Sabba Khan’s Two-Up Two-Down House is an ambitious design for their traditional Victorian terrace house

Two-Up Two-Down House exemplifies just how the typical London terrace can be a blank canvas for the adventurous architect. For the project, husband and wife architectural practice Khan Bonshek took on a substantial project to completely overhaul a Victorian house in East London. The resulting home radically rearranges the interior volumes, pushing the space right to the limit of what's possible, while adding a modest brick rear and rooftop extension.
Two-Up Two-Down House by Khan Bonshek
The architects did most of the work themselves. Mark Bonshek previously worked at Liddicoat Goldhill, whilst Sabba Khan’s work ranges from architectural design to an award-winning graphic novel, The Roles we Play.
‘Acting as client, architect and contractor allowed us to to be highly experimental both spatially and with materiality,’ they said, as the quality and diversity of the interior finishes and spaces attest. In the heart of the house is a triple height staircase, rising up to the loft extension alongside the central spine wall. By removing practically every internal wall and floor, the duo had a blank slate on which to work.
The relatively tight area has been given a new lease of life by a more expansive floorplan, with views out and across the length of the space, and out through the enlarged windows on the rear façade. The ground floor retains the original layout but refines the detailing, with a living room, dining room and kitchen in the rear extension.
Throughout the project, special attention has been paid to the joinery and brickwork, exploring unusual patterns and textures, with all materials left exposed and uncovered. The five year build process allowed the duo to test out a number of different ideas, including casting and fabricating metal. ‘The end result is unusual, unexpected and a real labour of love across every aspect of the home,’ they say.
In addition to concrete tie-beams, pre-cast concrete sills and bare brick walls, the project makes extensive use of sustainable spruce plywood and recycled plastics, along with reclaimed teak floors and black marble and brass detailing. The front door is finished in marquetry flooring offcuts, while the central steel staircase is finished in white, with timber treads and a ribbon balustrade.
A big part of the process was ensuring waste was kept to a minimum and existing materials were reused wherever possible. The terrazzo garden path uses marble offcuts from a V&A project, much of the flooring was left over from another job and dates back to the 1920s.
Wallpaper* Newsletter
Receive our daily digest of inspiration, escapism and design stories from around the world direct to your inbox.
Upstairs is the master bedroom and bathroom, alongside a modest reading/music room, while the stair continues up to attic level where there’s a office/second bedroom and a landing set beneath a run of roof-lights. Space is also saved by elements like the concealed downstairs WC beneath the stairs, the kitchen unit on wheels and discrete built-in storage.
The studio is currently working on a refit of the Pyramid House, an iconic structure designed by Wigley Fox architects and built for Homeworld ’81, an exhibition of thirty-six futuristic houses built in Milton Keynes. Their scheme seeks to protect the character of the house while furthering the ambitious goals of the original expo, which included a far-sighted emphasis on energy efficiency.
Jonathan Bell has written for Wallpaper* magazine since 1999, covering everything from architecture and transport design to books, tech and graphic design. He is now the magazine’s Transport and Technology Editor. Jonathan has written and edited 15 books, including Concept Car Design, 21st Century House, and The New Modern House. He is also the host of Wallpaper’s first podcast.
-
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
-
‘Nothing just because it’s beautiful’: Performance artist Marina Abramović on turning her hand to furniture design
Marina Abramović has no qualms about describing her segue into design as a ‘domestication’. But, argues the ‘grandmother of performance art’ as she unveils a collection of chairs, something doesn’t have to be provocative to be meaningful
By Anna Solomon Published
-
A local’s guide to Los Angeles by defiant artist Fawn Rogers
Oregon-born, LA-based artist Fawn Rogers gives us a personal tour of her adopted city as it hosts its sixth edition of Frieze
By Sofia de la Cruz 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