NIU N320 | Fran Silvestre Arquitectos
Valencia / Spain / 2026
The NIU project was conceived with the ambition of democratizing architecture by making it both sustainable and affordable. The systematization of the construction process reduces both execution time and costs while maintaining a high level of precision and quality.
The house is organized over two levels according to a clear and functional layout. The ground floor accommodates the day areas, while the upper floor contains the more private spaces. Between them, a compact core of circulation and services organizes the program and articulates the spatial sequence, optimizing both the spatial arrangement and construction efficiency.
The house is built using a lightweight steel structure. We understand open systematization as a lightweight construction system that clearly distinguishes between the structural function and thermal insulation. Rather than relying on mass as the traditional strategy for environmental performance, the project employs high-performance, lightweight insulating materials, recalling Buckminster Fuller's famous question: "How much does your building weigh, Mr. Foster?" Perhaps reducing the weight of architecture is one of the most effective ways to make it truly sustainable. The building envelope is conceived as a ventilated façade, while the interior is entirely finished in timber.
The house is designed to be oriented along a north-south axis, promoting efficient cross ventilation and optimal bioclimatic performance. This orientation passively enhances indoor comfort while reducing energy demand throughout the year.
A bioclimatic pergola allows solar radiation to penetrate during winter while providing shade in summer. These intermediate spaces blur the boundaries between indoors and outdoors, extending the usable living area and enabling new forms of occupation within the transitional zones.
The difference in level between the natural terrain and the building platform is resolved through a ventilated crawl space. By recirculating ventilation air through this cavity, the system transforms it into a contemporary reinterpretation of the Roman hypocaust, turning the floor into a radiant surface that can contribute to both heating and cooling, depending on the season. At the same time, it acts as a passive thermal recovery system, improving the building's overall energy efficiency and reducing its heating and cooling demand.
The environmental strategy is completed by a water recovery system that collects condensation produced by the air-conditioning equipment. This water is reused to supply the house's wet areas and irrigate the garden, reducing potable water consumption while integrating the building's different systems into a more efficient resource management cycle.
ARCHITECTURE
FRAN SILVESTRE ARQUITECTOS
PROJECT TEAM
Fran Silvestre | Project Architect
Andrés Alfaro | Interior designer
Maria Masià | Architect
Pablo Camarasa | Architect
Ricardo Candela | Architect
Estefanía Soriano | Architect
Sevak Asatrián | Architect
Carlos Lucas | Architect
Susana León | Architect
Javi Herrero | Architect
Facundo Castro | Architect
Anna Alfanjarín | Architect
Laura Bueno | Architect
Toni Cremades | Interior designer
David Cirocchi | Architect
Neus Roso | Architect
Nuria Doménech | Architect
Andrea Raga | Architect
Olga Martín | Architect
Víctor González | Architect
Pepe Llop | Architect
Laura Palacio | Architect
Carlos Pérez | Architect
Claudia Escorcia | Architect
Diana Murcia | Architect
Alejandra Pla | Architect
Carlos Ferrer | Architect
Daniel Fenollosa | Architect
Andrés Marín | Architect
Álvaro Navarro | Architect
Diana Chilingaryan | Architect
María Barberá | Architect
Yamiley Marrero | Architect
Carlos Peñalver | Architect
Silvia Cerveró | Architect
Mateo Esteban | Architect
Sandra Sanchis | Architect
Llucia Palmer | Architect
Elia Arnau | Architect
Mar Llopis | Architect
Ana de Pablo | Financial Manager
Sara Atienza | Marketing Manager
Valeria Fernandini | Financial Department
Soraya Ramírez | Administration Department
Javier Verdejo | Desing Department
José María Ibañez | Business Developer
Dalia Alba | MArch Graduate School
Javier Selfa | MArch Graduate School
Gemma Aparicio | Architect
TECHNICAL ARCHITECT
Enrique Alario
PHOTOGRAPHY
Jesús Orrico
Fernando Guerra
[ES]
El proyecto NIU nace con la voluntad de democratizar la arquitectura, haciéndola simultáneamente sostenible y asequible. La sistematización de los procesos constructivos permite reducir tanto los plazos de ejecución como los costes, manteniendo un elevado nivel de precisión y calidad.
La vivienda se organiza en dos plantas siguiendo un esquema claro y funcional. La planta baja alberga la zona de día, mientras que la planta superior contiene los espacios más privados. Entre ambas, un núcleo compacto de comunicaciones y servicios ordena el programa y articula los recorridos, optimizando tanto la organización espacial como la eficiencia constructiva.
La vivienda se resuelve mediante una estructura metálica ligera. Entendemos la sistematización abierta como una sistematización ligera, que diferencia claramente entre la función estructural y el aislamiento térmico. Frente a la idea tradicional de la masa como estrategia de acondicionamiento, se emplean materiales de muy altas prestaciones térmicas y de escaso peso, recordando la célebre pregunta de Buckminster Fuller: «¿Cuánto pesa su edificio, señor Foster?». Quizá aligerar el peso de la arquitectura sea una de las formas más eficaces de hacerla verdaderamente sostenible. La envolvente se realiza mediante una fachada ventilada, mientras que el interior se resuelve íntegramente en madera.
La vivienda está concebida para implantarse con una orientación norte-sur, favoreciendo una ventilación cruzada eficiente y un comportamiento bioclimático óptimo. Esta disposición permite mejorar el confort interior de forma pasiva y reducir la demanda energética durante todo el año.
La pérgola bioclimática permite la entrada de la radiación solar durante el invierno y la protege en verano. Estos espacios intermedios desdibujan los límites entre el interior y el exterior, ampliando la superficie útil y posibilitando nuevos usos en las zonas de transición.
El desnivel entre el terreno y la cota de implantación del edificio se resuelve mediante un forjado sanitario. La recirculación del aire de ventilación a través de esta cámara transforma este espacio en una reinterpretación contemporánea del hipocausto romano, convirtiendo el suelo en una superficie radiante que puede contribuir tanto a la calefacción como al refrescamiento, según la estación del año. Al mismo tiempo, este sistema actúa como un recuperador térmico pasivo, mejorando la eficiencia energética del conjunto y reduciendo la demanda de climatización.
La estrategia ambiental se completa con un sistema de aprovechamiento del agua procedente de la condensación de los equipos de climatización. Esta agua se reutiliza para abastecer las zonas húmedas de la vivienda y el riego del jardín, reduciendo el consumo de agua potable e integrando los distintos sistemas del edificio en un ciclo más eficiente de gestión de los recursos.
The NIU project was conceived with the ambition of democratizing architecture by making it both sustainable and affordable. The systematization of the construction process reduces both execution time and costs while maintaining a high level of precision and quality. The house is organized over two levels according to a clear and functional layout. The ground floor accommodates the day areas, while the upper floor contains the more private spaces. Between them, a compact core of circulation and...
- Year 2026
- Work finished in 2026
- Contractor NIU Architectural
- Status Completed works
- Type Single-family residence / Interior design


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