Calibrated Coexistence Tòa nhà Căn hộ by Masahiro Osaka

Calibrated Coexistence Tòa nhà Căn hộ by Masahiro Osaka is a highly esteemed winner of the very prestigious 2026 A' Design Award Đồng in Thiết kế Kiến trúc, Công trình và Kết cấu Competition Category.

ĐồngKiến trúc· 2026

Calibrated Coexistence Tòa nhà Căn hộ

by Masahiro Osaka

Client: Seiwa Corporation Co., Ltd.

A' Design Award Đồng Winner in Kiến trúc Category

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The Design

About Calibrated Coexistence Tòa nhà Căn hộ

Calibrated Coexistence là một cặp tòa nhà dân cư được đặt trong một khu tái phát triển đô thị. Hai công trình kết cấu bê tông cốt thép cao 32,5 và 43,3 mét, đối diện nhau qua một tuyến phố mới. Mặt tiền được tạo hình bởi các tấm chắn dạng mô-đun bằng gỗ tuyết tùng phay và nhôm anod hóa đánh bóng, được sắp đặt theo ba độ nghiêng đã được hiệu chỉnh. Các tấm chắn nghiêng điều tiết ánh sáng và luồng không khí, đồng thời cân bằng giữa sự riêng tư và tầm nhìn thoáng đãng. Các vách ngăn cao hai tầng ở tầng trệt mang theo cây xanh, mở rộng mảng xanh ra không gian đường phố.

The Recognition

About the A' Design Award Đồng

Calibrated Coexistence Tòa nhà Căn hộ là người chiến thắng giải thưởng A' Design Award Đồng, một sự công nhận vô cùng danh giá dành cho các thiết kế xuất sắc nổi bật về sự sáng tạo, tài khéo léo và sự sắc sảo. Những người chiến thắng giải Đồng là những hiện vật rất điêu luyện và sáng tạo ấn tượng, xác thực kinh nghiệm phong phú, trí tưởng tượng và sự tháo vát của các nhà thiết kế. Calibrated Coexistence Tòa nhà Căn hộ được kỳ vọng là một vật phẩm được đánh giá cao, ngưỡng mộ và trân trọng, chuyên nghiệp và đổi mới đáng chú ý. Thiết kế chiến thắng giải thưởng A' Design Award Đồng này tích hợp các thực hành tốt nhất trong nghệ thuật, khoa học, thiết kế và công nghệ, và xuất sắc nhờ sự chú ý đến chi tiết. Calibrated Coexistence Tòa nhà Căn hộ thỏa mãn nhu cầu một cách tuyệt vời, chạm đến ham muốn, làm say mê cảm xúc và thu hút sự tò mò.

Behind the Design

Press Kit

Credits, team members and technical details provided by the designer.

Unique Properties: Conceived as two interrelated structures shaping an emerging urban axis, the composition organizes depth and order through proportion, calibrated repetition, and controlled variation rather than formal excess. Layered surfaces register changing light and climate through contrasting tactile and reflective qualities interpreted in abstract form. Peripheral residential elements are restructured into spatial regulators that balance openness and discretion. Transitional zones support evolving domestic patterns while sustaining urban continuity. Technical precision and environmental responsiveness converge to establish enduring civic presence.
Dimensions & Packaging: Two reinforced concrete residential structures rise to 32.5 m and 43.3 m, reaching widths of 29.7 m. Their envelopes are organized by modular 1.2 x 1.8 m screens composed of polished metal and natural timber, set in three calibrated inclinations. This system generates layered depth, moderates light and airflow, and strengthens pedestrian scale. Expanded base zones incorporate planting to extend greenery into the streetscape, supporting environmental performance and cohesive urban presence.
Tags: urban redevelopment, mixed-use residential, streetscape design, balcony partition innovation, landmark architecture, contextual design, sustainable materials, dynamic facade, community engagement, residential design
Production Technology: The facade employs CNC-milled cedar panels and high-gloss anodized aluminum sheets, precisely angled to optimize light reflection and privacy. Custom jigs ensured consistent 3-pattern balcony tilt. Structural steel subframes integrate double-height partitions at the ground floor, supporting greenery and reducing visual mass. Parametric modeling guided the material transitions from river-reflective aluminum to forest-inspired wood, enabling reproducible, context-responsive facades.
Design Challenge: The core challenge was turning simple balcony partitions into sculptural urban elements that visually link two buildings across the street. We balanced spatial continuity and material warmth with strict zoning, structural limits, and fabrication constraints. Inspired by the Tama River and Ikuta Forest, we engineered precise, layered facades that unify city and nature. Through legal, technical, and environmental obstacles, constraints became catalysts for a new urban landmark.
Research: This study investigated how balcony partition design can transform urban residential facades. Using material experiments with cedar and reflective aluminum, 3D modeling, and site analysis, we tested variations across twin buildings. Results showed partitions enhance visual dynamics, connect interiors with surroundings, and create landmark streetscapes, demonstrating how thoughtful facade design elevates everyday rental housing, enriches community identity, and fosters human-nature interaction.
Inspiration: The work originates from a critical reflection on how overlooked elements of everyday housing can be repositioned to influence urban character. Within a redevelopment district where two residential towers face each other across a newly introduced street, the situation presented an opportunity to reconsider how architecture contributes to collective identity rather than functioning as isolated volume.
The surrounding territory is defined by contrasting natural conditions, open water landscapes and dense woodland terrain. Instead of literal representation, these environmental qualities informed a study of reflectivity, tactility, and depth. Through the controlled interplay of luminous metal surfaces and natural timber textures, the envelope becomes a mediator between atmosphere and habitation, registering shifts in light and season while maintaining compositional discipline.
A central ambition was to question the conventional hierarchy of rental housing components. Elements typically regarded as secondary were evaluated as potential instruments of spatial articulation. By refining orientation, material calibration, and dimensional variance, the facade operates as an adaptive field that balances privacy, daylight access, and visual continuity.
Evolving patterns of urban life also shaped the design logic. As domestic and professional activities increasingly overlap, transitional outdoor zones assume greater importance. These spaces are treated as active thresholds that extend interior life toward the city while preserving individual autonomy. The architecture therefore supports flexible occupation without sacrificing coherence.
Ultimately, the work demonstrates that architectural distinction can emerge from precision rather than excess. Through the disciplined transformation of ordinary components, it advances a model of housing that contributes to urban memory, environmental responsiveness, and long term civic relevance.
Project Duration: This project commenced in 2021 and, despite significant delays caused by a major hurricane, maintained its original design intent through close collaboration with local authorities, engineers, and the community. Certain elements were adapted to enhance disaster resilience. The development was successfully completed and delivered in 2024, exemplifying a resilient, context-sensitive, and community-integrated approach to contemporary residential architecture.
Operation Flow: Residents interact with Marie6 & Marie7 through balconies that open outward or inward, connecting indoor life with the street. Adjustable partition panels in wood and reflective aluminum shift light and views, creating dynamic facades. Key points include material choice, panel angles, and balcony orientation. These elements enhance privacy, daylight, and street engagement, producing a lively, adaptable, and harmonious urban environment.
Team Members: Producer : Hisashi Katsumata, Creative Director : Masahiro Osaka, Architectural Director : Satoko Shinohara, Designer : Taisuke Kaneko and Designer : Chisano Motohashi
Image Credits: Image : Photographer : IT Image
Image : Video Credits : IT Image