A one-of-a-kind townhouse in the heart of London could be your new home.
5 Whistler Square is the latest turnkey residence within the prestigious Chelsea Barracks neighbourhood to be released on the market. Situated in London’s Belgravia district, Chelsea Barracks occupies a prominent 12.8-acre site that once housed British royal guards and was kept out of public reach for more than 150 years. Since 2007, the address has been in the hands of luxury real-estate firm Qatari Diar and undergone a transformation into a desirable collection of luxury apartments, penthouses, and townhouses. Knight Frank holds the listing for this exceptional property.

Offering 1,210.5 square metres of living space, 5 Whistler Square is designed for multi-generational purposes, encompassing seven bedrooms, state-of-the-art amenities, and lavish furnishings, as well as a cinema room, roof terrace, landscaped garden, garage, and a dedicated wellness space featuring a sauna, workout gym, and pool.
Balancing grand architectural proportions with sculptural, contemporary finishes with a European inflection, the light-filled townhouse embodies a gallery-like feeling where bespoke pieces and antiques are given their moment to shine. Rooms are carved out as distinct zones for relaxation and entertainment, balancing masculine and feminine colour palettes, lines, and shapes. Plaster walls, various types of stone, wood veneer panelling are key materials used to provide a textured appearance.





Edoardo Mapelli Mozzi, CEO of Banda, the British design studio behind the transformation of the property, tells Robb Report Hong Kong that “the initial mood for 5 Whistler Square was centred around contrast, between classical proportion and sculptural modernity, softness and strength, familiarity and discovery.” Basing the blueprint on the house’s palatial “Georgian architecture and scale gave us the framework,” Mozzi explains. “From there, we layered in inspiration from vintage European design, contemporary art, and natural material palettes. We wanted the interiors to feel highly curated but still comfortable, with an emotional rhythm as you moved through each space. [It’s a] balance of permanence and personality.”
Banda also completed the design of 4 Mulberry Square, another sumptuous and spacious townhouse within Chelsea Barracks which was listed in 2024, making the team already deeply familiar with the task at hand when approaching 5 Whistler Square. Mapelli Mozzi says, “Chelsea Barracks is a unique part of London—deeply historic but reimagined for the present. The homes are set within landscaped gardens, surrounded by heritage stone, but the atmosphere is contemporary, calm, and intentional. That’s the same spirit we brought into the design. Whistler Square feels rooted in its surroundings, but it also looks forward. It doesn’t rely on nostalgia. Instead, it celebrates quality, craft, and emotional depth, just like Chelsea Barracks itself.”

On the upper floor is where homeowner will find the principal bedroom. Keeping with the soothing visual and tactile approach, Banda has paired a bespoke burl-walnut bed with a custom Danish banana sofa in De Le Cuona’s deep blue velvet fabric, an elegant 1950s Barovier Murano glass chandelier, an Olivia Bossy wall sconce, and a Studio 125 Japanese ebonised-cedar coffee table, as well as a pair of vintage armchairs.


In the study, done up in a darker tone with a masculine style, a Fred Rigby desk in ebonised oak and bespoke coffee table made of black lava stone serve as the room anchors, softened by a cream linen sofa and a Coral & Hive hand-tufted wool rug. A pair of antique lighting fixtures—an Austrian 1950s desk lamp designed by Julius Theodor Kalmar made from brass and paper, and a wall light in enamelled glass and brass—bring a touch of brightness to the room.

Elsewhere, Banda optimised the open-plan layout of the kitchen on the lower ground floor by opening it up to overlook the private garden, inviting an interplay between interior and exterior. Henning Kjærnulf Razorblade chairs upholstered in lambswool surround a bespoke oak table, while Skylar Morgan Arc bar stools line the marble counter. A wine room across from the kitchen adds further interest, featuring smoked European oak veneer and Breccia quartzite.

In the dining room, minimalism plays a major role, centred around a limited-edition Martin Masse travertine dining table, and sculptural Maxime Boutillier chairs—contemporary choices that contrast against the moody textures of the room’s limewash walls. Meanwhile, the formal living room revolves around refined statement pieces that blend old and new, such as the De Sede modular sofas in mohair velvet, Pierre Augustin Rose armchairs, furniture from Studio Twenty Seven, vintage décor, and unique art.

When it came to furniture curation, Mapello Mozzi felt that “the idea was that every piece should feel like it belongs, not because it matches, but because it carries weight, a point of view. We curated with a collector’s mindset. Whether it’s a Maxime Boutillier dining chair or a vintage Austrian desk lamp, each object has a sense of form, provenance, and tactility. Cohesion came through tone, material honesty, and silhouette, and by ensuring that every piece had purpose and presence, not just style.”


Descending further down, Banda has moulded the lower level into a space for wellness and relaxation, complete with a 10-metre swimming pool, a fitness room for exercise, and a sauna, as well as a lounge area for post-workout cooldowns.

Mapelli Mozzi was especially taken with the original build of the property, which gave the team room to play with the interior design. “For me, the standout feature is the width and scale of the house; it’s incredibly rare in London, especially in Belgravia. That volume allowed us to work with real sculptural forms and bold pieces, without ever feeling overcrowded. We wanted the house to breathe, to feel spacious but never cold. The principal suite, for example, runs the full 10-metre width of the building. We designed it to feel calm, almost gallery-like, but still warm and deeply personal.”

As for his favourite place within 5 Whistler Square to spend time in, it’s “the family living room, without question. It has this quiet presence—grounded, tactile, sculptural.” Mapelli Mozzi highlights the Charlotte Biltgen Ecume sofa wrapped in Dedar alpaca, the Banda-designed micro-cement coffee table, and the bespoke television cabinet in Alpi-Sottsass Grey veneer as notable focal points. “Everything feels carefully weighted, but still relaxed,” he says, noting that “there’s a softness in how it all comes together. It’s a room made for conversation, for slowing down. I’d spend hours there.”
All images courtesy of Chealsea Barracks.