ODDO Architects' Innovative Extension in Vietnam: Transforming Urban Alleyways into Shared Spaces (2026)

In the bustling city of Hanoi, Vietnam, a unique architectural project has emerged, challenging conventional design norms. ODDO Architects, a local studio with an international presence, has crafted an innovative extension to the TH House, transforming a narrow, alley-accessible plot into a vibrant living space. This project is a testament to the studio's ability to turn constraints into creative opportunities.

The Social Alleyways of Hanoi

Hanoi's urban alleyways are more than just narrow passages; they are the lifeblood of the city's vibrant community. ODDO Architects recognized this unique social dynamic and sought to replicate it within the confines of the TH+ House extension. The studio's design philosophy centered around creating a series of interconnected, flexible spaces that echo the social intensity of Hanoi's alley neighborhoods.

Stacked Spaces and Visual Connections

The extension is a stacked composition of rooms overlooking central voids, organized around a striking red steel support structure. This design not only maximizes the use of the narrow space but also fosters visual connections between different levels. Internal windows and a bean-shaped opening further enhance this sense of connectivity, creating a unique spatial experience.

Ground Floor: A Flow of Spaces

On the ground floor, a new kitchen seamlessly transitions into a dining area, with a small courtyard and bathroom nearby. A wall of folding glass doors opens up to the adjacent alley, blurring the boundaries between indoor and outdoor spaces. This level is a testament to the studio's ability to create flexible, adaptable spaces that cater to the client's growing family.

Upper Levels: Warmth and Visual Links

As we move upwards, a living room, tea room, and new bedrooms maintain visual links with the spaces below and the original TH House. Perforated white-steel walkways connect the levels, allowing natural light to permeate the interior. The upper levels are lined with timber panels, creating a warmer ambiance, in contrast to the lower levels' dark stone floors and exposed concrete ceilings.

The Central Red Column: A Structural Backbone

The central red steel column is the heart of this design. It serves as both the structural backbone and the spatial organizer of the house. By concentrating the load onto this single element, the studio was able to create larger openings, flexible layouts, and continuous visual connections across the narrow footprint. This column is a symbol of the project's core values: openness, adaptability, and spatial generosity within tight urban conditions.

A Studio with Vision

ODDO Architects, led by partners Nguyễn Đức Trung, Mai Lan Chi Obtulovičová, and Marek Obtulovič, has a proven track record of innovative design. Their work, including the CH House on a similar skinny site in Hanoi, showcases their ability to create dwellings that are both functional and aesthetically pleasing. The studio's win as Emerging Architecture Studio of the Year in the 2021 Dezeen Awards is a testament to their talent and vision.

Conclusion: A Creative Response to Constraints

The TH+ House extension is a brilliant example of how architectural design can transform constraints into opportunities. By drawing inspiration from Hanoi's alleyways, ODDO Architects has created a unique, socially vibrant living space. This project showcases the studio's ability to think creatively, adapt to challenging sites, and deliver exceptional design solutions. It's a reminder that architecture is not just about structures, but also about creating spaces that enhance our social interactions and daily lives.

ODDO Architects' Innovative Extension in Vietnam: Transforming Urban Alleyways into Shared Spaces (2026)
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