Imagine a home that seamlessly blends privacy with openness, tradition with modernity, and urban living with a connection to nature. That’s exactly what architect Keiji Ashizawa achieved with the House in Minami-Azabu, a three-storey family home in the heart of Tokyo. But here’s where it gets controversial: in a city known for its density and noise, how do you create a sanctuary that feels both spacious and intimate? Ashizawa’s answer lies in a thoughtful interplay of tropical hardwood, reinforced concrete, and strategic design elements—but not everyone agrees on the balance.
Designed for a couple and their three children, this house sits between a bustling residential street to the south and a serene temple ground to the north. To address the challenge of privacy without sacrificing natural light and ventilation, Ashizawa’s studio incorporated wooden louvres and lush greenery on the southern facade. These louvres, crafted from ipe, a weather-resistant tropical hardwood, not only control views into the house but also create a breathable interface between indoors and out. But is this enough to truly shield a family from the chaos of city life? Some might argue it’s a delicate compromise.
The northern facade, meanwhile, takes a different approach. Set back from the plot’s edge, it features traditional sliding shoji screens, a nod to Japanese architectural heritage. This design choice sparks debate: does it enhance the home’s tranquility, or does it feel out of place in a modern urban context? Ashizawa himself describes the planning process as ‘solving a puzzle,’ and this duality of tradition and innovation is a piece that doesn’t always fit neatly.
Inside, the layout is a study in contrasts. Private spaces occupy the first and second floors, while the third floor houses an open-plan living and dining area that connects directly to a large terrace and rooftop garden. ‘This configuration allows residents to enjoy openness, light, and sky while maintaining distance from the street,’ Ashizawa explains. But here’s the part most people miss: the rooftop garden isn’t just an aesthetic choice—it’s a functional solution to Tokyo’s strict urban regulations and climate demands. Reinforced concrete, chosen for its durability, waterproofing, and acoustic properties, plays a starring role here. Yet, some critics question whether it feels too industrial for a family home.
The interior design is equally thoughtful, with a neutral color palette of natural wood and greige hues. A large skylight floods the space with daylight, while a stone fireplace adds warmth and grounding. A bar counter between the dining and living areas creates a seamless flow, but the darker-toned materials used here might divide opinions—do they add depth, or do they make the space feel heavier than intended?
One of the most intriguing aspects of the project is its connection to nature. Traditional Komatsu stone paving at the entrance evokes a Japanese garden, while the third-floor terrace merges with the greenery of the neighboring temple gardens. A spiral staircase leads to the rooftop, offering an additional outdoor escape. But does this blend of natural elements truly compensate for the home’s urban setting, or is it merely a symbolic gesture?
Ashizawa’s choices—from the material selection to the spatial layout—are undeniably bold. Reinforced concrete, for instance, was chosen not just for its practicality but also for its ability to meet Tokyo’s fire-resistance and vibration control requirements. Yet, some might argue that it lacks the warmth of traditional Japanese materials. Similarly, the use of ipe wood for the louvres is both functional and aesthetic, but its sustainability in a tropical hardwood context could spark debate.
So, what do you think? Does the House in Minami-Azabu strike the right balance between urban living and natural harmony, or does it lean too heavily into one at the expense of the other? Let us know in the comments—we’d love to hear your take on this thought-provoking design.
Photography by Tomooki Kengaku. Project credits: Architect: Keiji Ashizawa Design; Project Architect: Keiji Ashizawa, Kenji Kawami; Structural Engineer: AS Associates Akira Suzuki; Construction: SHIN.
