The Old Sorting House
The Old Sorting House
Stylus Architects transformed a historic South West London postal sorting office into a striking, contemporary family home. The project celebrates the industrial heritage of the building by retaining key features such as the cast iron roof trusses and introducing a central large brick arch into the rear side gable, which has become one of the building’s most prominent features. A full internal strip-out was carried out, retaining only the external and main load-bearing walls, allowing a complete reimagining of the central space.
At the heart of the home, a dramatic floating mezzanine deck sails above a long kitchen island, creating a sense of height and spatial drama while visually linking the ground and first floors. The mezzanine was structurally designed to be as thin as possible, maximising headroom below, and is bordered by bespoke steel balustrades, delicately proportioned to complement the industrial character of the building. This careful attention to detail results in a visually light structure that enhances openness and flow throughout the home.
"We absolutely love the unique spaces Matt and his team have created — every corner feels considered, full of character, and perfectly connected to the building’s history."
Name
A Suspended Connection
Rather than treating the stair and mezzanine as separate elements, they are conceived as a single, continuous piece of architecture. The stair rises from the ground floor and transitions seamlessly into a floating bridge that passes over the entrance, linking directly to the cantilevered mezzanine deck beyond.
This moment of connection is both dramatic and spatially complex. As the stair lifts away from the ground, it becomes a suspended element within the volume, heightening awareness of the building’s scale and structure. Moving across the bridge, occupants are placed within the heart of the former sorting hall, with long views through the central brick arch and out towards the glazed courtyard beyond.
The stair itself is carefully resolved as both structure and utility. Storage is integrated beneath, shaped precisely around its form, ensuring that function is embedded within the architecture rather than added afterwards. Above, the stair and mezzanine are kept intentionally light, allowing the original fabric of the building, the cast iron trusses, brickwork and generous volume, to remain visually dominant.
Together, the stair, bridge and mezzanine form a continuous architectural language that binds the house vertically and horizontally. Neither purely circulation nor purely structure, this suspended sequence becomes a defining spatial experience, reinforcing the openness of the plan while celebrating movement, connection and the layered character of the existing building.
Arrival
From the moment you enter The Old Sorting House, the full depth of the building is revealed. Sightlines run straight through the plan, drawing the eye towards the newly constructed brick arch at the far end and establishing an immediate connection between front and rear.
Opening the front door, the entire volume is experienced at once. The height, structure and scale of the former sorting hall are deliberately left legible, allowing the building’s character to be understood instinctively rather than gradually. This moment of arrival was central to the early brief to celebrate the existing building, and the design ensures that its spatial generosity is encountered immediately.
By resisting subdivision at the entrance, the architecture sets a clear tone for the rest of the house: open, connected and confident, with the historic fabric framed and expressed as part of everyday movement through the space.
The Arch
A defining feature of The Old Sorting House, the brick arch draws inspiration directly from the original building. While various openings on this elevation had been blocked up over time, the project presented an opportunity to reinterpret and celebrate the historic fabric for a new use.
Constructed with care to reflect the scale and presence of its predecessor, the arch frames the glazed dining area, connecting interior and exterior while creating a dramatic focal point along the central axis of the house. It not only reinforces long sightlines through the building but also celebrates the Victorian industrial character, anchoring the contemporary interventions within the narrative of the original structure.
The arch is both sculptural and functional, forming a threshold between spaces while allowing light and views to pass freely, ensuring that the historic heritage is experienced as a living part of the home rather than a static backdrop.
The Brick Spine
Running through the centre of the plan, the exposed brick spine wall is one of the most direct expressions of the building’s history. Carefully stabilised and repaired, the wall was intentionally left with its scars and irregularities intact. These traces of use and adaptation were retained and unified through paint, allowing the wall to read as both robust and purposeful rather than overly refined.
The brick spine acts as a fixed reference within the new interior, anchoring the plan and allowing the historic fabric to remain legible. Contemporary interventions are deliberately held away from it. Clean plasterboard walls, the mezzanine deck and new structural elements stop just short, creating fine shadow gaps that give the impression of floating planes rather than direct contact.
This measured separation establishes a clear architectural dialogue between old and new. The historic wall is neither concealed nor overwritten; instead, it is given space to be read and understood. By maintaining this respectful distance, the design allows the character of the original building to remain intact, while the new architecture asserts its own clarity, lightness and precision alongside it.
A Place to Retreat
Set away from the intensity of the central volume, a calm retreat is formed along the edge of the upper level. A deep window seat is built into bespoke Formica-faced ply joinery, framing long, horizontal views across the green roof beyond. The seat becomes a place to pause, somewhere to read, sit or simply look out, offering a softer counterpoint to the drama of the main space.
The green roof is experienced almost as an extension of the interior, its changing colour and texture bringing a sense of seasonality and calm into the room. Above and around, the original vaulted ceiling remains fully legible, reinforcing the scale of the former sorting office while allowing this area to feel sheltered and composed.
This space is deliberately understated. Materials are robust and tactile, detailing is precise, and the architecture steps back to support everyday use. It is a moment of stillness within the house, designed for rest, reflection and quiet occupation, while remaining visually connected to the wider volume and landscape beyond.
A Contemporary Reinterpretation
The Old Sorting House is a careful balance of restraint and expression. Historic structure and materiality are retained and allowed to lead, while new interventions are precise, lightweight and clearly contemporary. Within this framework, colour is introduced with intention. Used sparingly, it brings moments of warmth and character without overwhelming the industrial calm of the spaces.
Bold accents are applied where they carry meaning. The soffit of the mezzanine is painted yellow, marking the threshold between levels and reinforcing the lightness of the suspended structure. This tone reappears in the built-in window seat cushions, creating a visual thread across the upper level. Elsewhere, blues and greens are integrated into the joinery, softening the architecture and lending the interiors a relaxed, domestic quality. Together, these carefully placed colours ensure the home feels expressive and inviting, rather than overly serious, while remaining grounded in a clear and coherent architectural language.
