Urban Prism Domus by Nobuaki Miyashita is a highly esteemed winner of the very prestigious 2025 Praemium A' Design Award Aeneum in Architectura Competition Category.

AesArchitectura· 2025

Urban Prism Domus

by Nobuaki Miyashita

Client: Aida Sekkei Co., Ltd.

Praemium A' Design Award Aeneum Winner in Architectura Category

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Verified Award Winner

Verify Award Status for #171578

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The Design

About Urban Prism Domus

Urban Prism est domus trium tabulatorum in denso urbis Tokiogensis loco in Iaponia aedificata. Structura lignea totam aream pavimenti 127,82 metrorum quadratorum in area 100,13 metrorum quadratorum tegit. Muri finales et porta zonam intermediam efficiunt, quae lucem et aerem in interiora inducit. Atrium cenaculum in aperto extendit, et vela mobilia secretum et lucem diurnam moderantur. Exterior tabulis fibrocementiciis textura instructis vestitur, dum pavimentum quercinum, ferrum et vitrum interiora formant. Forma sculptoria legibus localibus de altitudine et recessu aedificiorum respondet.

The Recognition

About the Praemium A' Design Award Aeneum

Urban Prism Domus victor est Praemii A' Design Award Aeneum, honoris multum aestimati formis egregiis, creandi ingenio, sollertia et acumine insignibus dati. Victores Aenei opera perita et mire creandi sunt, quae experientiam, imaginationem et solertiam auctorum suorum confirmant. Exspectatur Urban Prism Domus rem multum aestimatam, admiratam et carissimam, notabiliter professionalem et novam fore. Haec forma Aeneo victa optimas consuetudines artis, scientiae, formandi rationis et technologiae amplectitur et in cura minutiarum excellit. Urban Prism Domus necessitates egregie explet, cupiditates tangit, sensus capit et curiositatem allicit.

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