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Off-Grid Living Enhanced by SIP Technology and Scaffolding Framework
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Featuring modular construction with structural insulated panels and a scaffolding framework, these compact units offer off-grid living solutions tailored for young residents in Lisbon.
5 key facts about this project
01
Each microhome is prefabricated in six parts, allowing for rapid on-site assembly in just four hours.
02
The design employs structural insulated panels for enhanced thermal efficiency and low energy consumption.
03
Solar panels on the roofs generate around 50% of the residents' energy needs, promoting sustainability.
04
Advanced rainwater harvesting systems can collect up to 7,300 liters annually, supporting off-grid living.
05
The use of H-beams creates a unique framework that facilitates communal pathways between units, fostering interaction.

## Microhomes Project in Lisbon: Architectural Analysis

### Context and Intent
The Microhomes project addresses Lisboa's significant housing crisis, where a substantial portion of the young population grapples with rising living costs. With a pressing demand for approximately 12,000 new housing units, the initiative focuses on affordability and sustainability, offering modular homes under 25 square meters at half the prevailing market rates. The design employs a "Parasite" concept to utilize existing infrastructure and vacant urban spaces, fostering community engagement while providing accessible living solutions for young residents.

### Spatial Configuration and Assembly
The Microhomes are organized in a layout that optimizes communal interactions, resembling books on a shelf to enhance social connectivity among residents. The structural integrity is maintained through H-beams, with scaffold pathways facilitating movement between units. Each microhome is prefabricated in six parts, allowing for efficient on-site assembly that reduces construction time to four hours with three workers, thus responding quickly to urgent housing needs while ensuring a functional and visually coherent living environment.

### Material Innovation and Sustainability
This project incorporates advanced materials that bolster thermal performance, structural integrity, and user comfort. The primary building component is the Structural Insulated Panel (SIP), designed with a 120mm thickness for superior insulation. Other material choices include robust PVC doors, double-glazed windows for energy efficiency, and pre-fitted kitchen modules alongside dedicated storage units. The design also emphasizes sustainable practices, featuring solar panels on roofs that can generate 4.5 kWh monthly, covering half of the energy requirements of the residents. Additionally, incorporated water harvesting systems demonstrate the project's commitment to self-sufficiency and resource conservation, with the capacity to collect up to 7,300 liters annually.

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The Buildner’s Unbuilt Award 2025: Celebrating Architectural Creativity and Visionary Unbuilt Designs with a Total Prize Fund of €100,000

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Competition organisers

The Buildner’s Unbuilt Award 2025 is an international architecture competition dedicated to recognizing and celebrating the value of unrealized architectural designs. It invites architects, designers, and students worldwide to submit visionary projects that have not yet been constructed, highlighting the power of ideas and the creativity behind the design process. By focusing on unbuilt work, the competition aims to bring forward concepts that shape the future of architecture and push the boundaries of the profession. 

Participants can compete in three categories based on project scale: Small Wonders (up to 100 m²), Medium Marvels (101–999 m²), and Large Visions (over 1,000 m²). Each category winner will receive €20,000, and additional prizes include honorable mentions, student awards, and a special Best Presentation Award. Winning projects will gain significant international exposure through Buildner’s publicity campaign and a feature article on ArchDaily, providing a unique opportunity to showcase creative ideas to a global audience. 

The Buildner’s Unbuilt Award 2025 encourages entrants to submit any type of unbuilt project, from conceptual visions to detailed designs, celebrating bold innovation without the constraints of realization. Important deadlines: registration closes on October 30, 2025; submissions are due by November 20, 2025; winners will be announced on December 17, 2025.

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Eligibility Open to all
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