Collaborators: Victor Alfonso Montañez
Year: 2025
Category: Landscape & Urbanism
Skills: 3d max, Photoshop, Rhino, V-Ray, InDesign
Introduction This proposal is part of the Nano Home competition, which challenges designers to conceive a minimal dwelling under 25 m², capable of addressing today’s demands for livability, sustainability, and spatial efficiency. Set in a mountainous and arid context inspired by the Atacama Desert, this compact home offers a replicable model of sustainable architecture, using rammed earth, passive design strategies, and energy autonomy as its core principles.
The design is based on the notion of a "self-sufficient housing cell"—a basic unit that can work independently or in clusters, adapting to various harsh environments. From materials to orientation, every design decision aims to reduce energy consumption, utilize low-impact local resources, and offer maximum comfort within minimum space.
The total built area is 24.80 m², complying with the competition requirements. The layout is distributed into three functional zones:
Main multifunctional space: combines living, sleeping, and dining areas.
Compact kitchen and dry bathroom module: efficient and installation-free.
Semi-covered outdoor area: part of the passive system, including retractable shading.
Vertical strategies and integrated foldable furniture optimize the use of the interior volume.
The main structural system is rammed earth, which provides: High thermal performance: stabilizes indoor temperature Structural strength and durability Low environmental impact and suitability for local manual labor Natural aesthetics, reinforcing the identity of place A distinctive perforated earth lattice wall on the eastern side filters light and air, minimizing afternoon overheating. A secondary timber frame supports the roof structure and movable elements such as solar screens, counterweight-operated windows, and retractable overhangs.
The house incorporates passive architectural principles, carefully tailored to suit extreme desert-like conditions: a) Orientation The volume is oriented toward true north to capture sunlight during winter while minimizing exposure to harsh winds and temperature fluctuations on the south facade. b) Adapted Trombe Wall A compact Trombe wall is integrated on the northern side, composed of dark rammed earth, an air chamber, and an external glass panel. This system passively heats the interior during the day and slowly releases stored heat at night. c) Solar Control and Overhangs Calibrated wooden overhangs are designed to shade in summer and allow winter sun to penetrate, working in tandem with earth-based louvers to provide protection without compromising views or airflow. d) Cross and Mechanical Ventilation A counterweight-operated window system allows effortless air movement using a basic pulley mechanism. This intuitive approach ensures optimal cross ventilation without electrical reliance.
The project aims for complete off-grid autonomy, using simple but effective technologies: Photovoltaic solar panels: positioned on the inclined roof to provide energy for lighting and charging devices. Solar thermal collector: mounted on the roof to supply hot water. Rainwater harvesting system: integrated guttering and inclined roof direct water to a concealed storage tank beneath the elevated structure. Compostable dry toilet: eliminates the need for water or sewage connections. Greywater filtration system: filtered through gravel and xerophytic vegetation for minimal irrigation of native plants.
Material choices are driven by sustainability, affordability, and local availability: Walls: layered rammed earth with visible stratification, no synthetic finishes Structure and roof: laminated timber treated with natural oils Floors: stabilized earth finished with natural sealants Windows and doors: timber frames, single glazing for operable panels, and double glazing for Trombe wall
The surrounding desert landscape is not just context—it’s design input. Existing vegetation is preserved, and a native plant strip is proposed for dust control, biodiversity, and microclimate regulation. The color palette and textures of the building replicate the desert terrain, achieving visual integration and a respectful presence in the natural setting.
This Nano Home is a synthesis of tradition and innovation: a minimal dwelling that meets climatic and spatial challenges through material intelligence and passive strategies. Its performance does not rely on complex technology but on timeless ecological design principles, solar orientation, thermal mass, and sensitivity to place. It is conceived as a replicable, scalable model for arid regions across Latin America, Africa, and Asia—ideal for self-construction, low-budget housing, and community development.
Global Adaptability
The core strategies used—rammed earth, passive systems, and solar autonomy—can be replicated or adapted to multiple bioclimatic zones, especially:
Northern Mexico, Arizona, New Mexico, and Texas (USA)
Regions with strong solar radiation, extreme day-night temperature shifts, and growing housing needs.
Saharan and Sub-Saharan Africa
Countries like Morocco, Egypt, Mali, and Namibia where earth construction is traditional, but under threat from urban pressures and modernism.
Middle East and Central Asia
Places such as Iran, Afghanistan, and Jordan, where vernacular architecture has long relied on thermal mass and earth-based systems.
Dry zones in India and Pakistan
Where low-cost housing is urgently needed, and where the rural population already possesses ancestral knowledge of earthen construction.
Australian Outback
A climate and cultural context in need of regenerative design for Aboriginal communities and remote living.
Altiplano Andino (South America)
In countries like Peru, Bolivia, and northern Argentina or Chile, where indigenous communities live in high-altitude arid zones with extreme climatic conditions.
This project is not just a dwelling—it is a philosophy of building with the Earth instead of against it. Through simplicity, locality, and autonomy, it presents a blueprint for transforming how we inhabit the planet. Its impact could be profound in several areas: 1. Climate Action By drastically reducing carbon emissions (no cement, no steel, no mechanical HVAC), this architecture becomes a frontline response to the climate emergency. 2. Housing Crisis This model offers an accessible alternative for vulnerable populations, displaced communities, or rural inhabitants, especially in regions lacking infrastructure. Its self-construction potential empowers people to build their own future with dignity.
3. Cultural Preservation Using earth and ancestral systems reconnects communities with their identity, land, and traditional knowledge, protecting intangible heritage from erasure. 4. Educational Value The dwelling becomes a teaching tool for future architects, engineers, and planners, illustrating how climate-responsive design does not require high technology but deep understanding of context. 5. Resilient Communities By fostering energy independence and local materials, this type of architecture strengthens social resilience and economic autonomy.
In an age where global housing must evolve to face new environmental and humanitarian challenges, this Nano Home proves that small-scale architecture can have planetary-scale impact. It calls for a shift in priorities: less concrete, more earth; less consumption, more consciousness. Through its humble form, this home proposes a radical idea: that a better world may begin with smaller, wiser, and more connected dwellings.
Victor Alfonso Montañez
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