Urban Prism Maison by Nobuaki Miyashita is a highly esteemed winner of the very prestigious 2025 A' Design Award de Bronze in Design d'Architecture, Bâtiment et Structure Competition Category.

BronzeArchitecture· 2025

Urban Prism Maison

by Nobuaki Miyashita

Client: Aida Sekkei Co., Ltd.

A' Design Award de Bronze Winner in Architecture Category

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Verified Award Winner

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The Design

About Urban Prism Maison

Urban Prism est une maison de trois étages construite dans un quartier urbain dense de Tokyo, au Japon. La structure en bois développe une surface de plancher totale de 127,82 mètres carrés sur un terrain de 100,13 mètres carrés. Des murs de clôture et un portail composent une zone tampon qui laisse pénétrer la lumière et l'air à l'intérieur. Une cour prolonge le séjour vers l'extérieur, tandis que des écrans réglables maîtrisent l'intimité et l'apport de lumière naturelle. Un bardage en fibres-ciment texturé habille les façades, alors que le parquet en chêne, l'acier et le verre façonnent les espaces intérieurs. La forme sculpturale répond aux réglementations locales de hauteur et de recul.

The Recognition

About the A' Design Award de Bronze

Urban Prism Maison est lauréat de l'A' Design Award de Bronze, une reconnaissance hautement prestigieuse décernée à des designs remarquables qui se distinguent par leur créativité, leur ingéniosité et leur sagacité. Les lauréats Bronze sont des artefacts amplement habiles et d'une créativité frappante, qui authentifient la vaste expérience, l'imagination et l'ingéniosité de leurs concepteurs. Urban Prism Maison est censé être un objet très estimé, admiré et chéri, remarquablement professionnel et innovant. Ce design lauréat de l'A' Design Award de Bronze intègre les meilleures pratiques de l'art, de la science, du design et de la technologie, et est excellent par son souci du détail. Urban Prism Maison satisfait admirablement les besoins, touche les désirs, charme les sentiments et attire la curiosité.

Behind the Design

Press Kit

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

Unique Properties: Urban Prism balances privacy and openness in a dense urban setting. The design utilizes boundary walls and a gate to create a buffer zone filled with light and air, seamlessly connecting the interior and exterior. Japan’s strict height and setback regulations shaped its refined, sculptural form. A courtyard extends the living space, while adjustable screens regulate privacy and daylight. Black bamboo and upward lighting enhance the entrance, evoking a Japanese aesthetic.
Dimensions & Packaging: Site Area: 100.13 Square meters
Building Area: 57.64 Square meters
Total Floor Area: 127.82 Square meters
Structure: Wood
Number of Floors: 3 above ground
Eaves Height: 8.53 m
Ceiling Height: 2.50 m
Tags: architecture, house, urban design, natural light, spatial composition, sustainable living
Production Technology: The house employs durable materials suited to urban environments. Textured fiber cement siding accentuates light and shadow interplay, reinforcing depth. The interior harmonizes solid wood, steel, and glass, blending modernity with warmth. Oak flooring enhances the tactile experience. High-performance insulated glass and movable screens optimize daylight, ventilation, and privacy. The exterior cladding ensures longevity, requiring minimal maintenance over time.
Design Challenge: The greatest challenge was balancing privacy and openness within strict urban zoning constraints. Japan’s stringent height and setback regulations required innovative volumetric manipulation to maximize livable space. Socially, the project had to address urban density while maintaining tranquility. Externally, material selection was limited by durability and maintenance concerns. Advanced simulations optimized daylight and airflow, ensuring a harmonious spatial experience.
Research: Type of Research: Architectural design research
Research Objectives: Optimization of urban housing through spatial and environmental adaptability
Methodology: Model testing, daylight and airflow simulations
Data Collection: On-site analysis, material performance tests
Results: Established a refined approach to urban privacy, integrating zoning constraints into design solutions
Inspiration: The project transforms zoning constraints into design potential, integrating privacy, natural light, and spatial expansion. The home’s multi-layered structure fosters an interplay between openness and enclosure, adapting flexibly to its surroundings. Carefully arranged volumes and walls create a dynamic sequence of spaces. The design embraces traditional Japanese elements, reinterpreted through contemporary architectural language to enhance urban living.
Project Duration: The project was completed in 2019 in Tachikawa, Tokyo, Japan.
Operation Flow: Smooth circulation and spatial layering create a dynamic living experience. The atrium channels natural light and air throughout the house, shifting in ambiance with time. Adjustable screens and staggered walls allow residents to control privacy and exposure. The courtyard functions as an outdoor extension of the living room, enhancing spatial fluidity. Black bamboo and illuminated surfaces establish a serene entryway, linking nature with contemporary design.
Patents: N/A
Team Members: N/A
Image Credits: Image #1, #2,#3, #4, #5: Photographer Nobuaki Miyashita, Variations, 2019