Sí-House
Autonomous Living with the Look of a Modern Stone Home
Our Sí-Houses combine Mediterranean aesthetics with a highly modular, fast and extremely durable construction method.
The core structure is a bolted container-frame system, externally finished with natural materials.
This creates the appearance of a traditional stone house - yet lighter, more earthquake-resistant and far more energy-efficient.
Inside, the design features open, light-filled spaces with natural plaster surfaces, exposed wooden beams and bright stone accents.
Each home can be equipped with a fireplace, bread oven or traditional kitchen.
Façades made of natural stone or Mediterranean plaster create an authentic look that integrates seamlessly into warm climates.
Technically, every Sí-House can operate fully off-grid:
- SíAir for zero-energy cooling and passive heating
- Large water or cold-storage cisterns
- Solar thermal systems and vacuum tube collectors
- SíSand seasonal heat storage
- Off-grid PV and battery systems
The result is a home that is not only beautiful, but also low-maintenance, energy-autonomous and deployable anywhere in the world - from Mallorca to Cape Verde, Portugal to Greece.
We also design complete settlements, tiny-house clusters and full SíVillage developments based on the same system.
Technology Inside
Modular Structure – Solid Appearance, Fully Autonomous Operation
Each Sí-House is built on a highly stable, bolted container-frame system that enables fast, precise construction anywhere - even in remote regions.
This structure supports any architectural layout, from compact tiny houses to complete village configurations.
The modular design allows walls, roofs and façades to be adapted to different climates and locations.
Solid wood, clay plaster, natural stone or modern high-performance materials can be freely combined.
All technical components - water treatment, heating and cooling systems, power supply - are invisibly integrated into the structure.
The result is a Mediterranean-style home that is fully modular, expandable and transportable.
These houses offer long-lasting, robust solutions for autonomous living, tourism projects or full community-scale developments - adaptable to any environment.
Sí-House 72 m²
Efficient living space for hot summers and sunny winters
Perfect for Mediterranean climates — cool in summer, warm in winter, fully off-grid.
The 72 m² Sí-House is specifically designed for Mediterranean regions.
It blends natural stone aesthetics, generous window fronts and an open floor plan with fully autonomous energy systems.
The house adapts naturally to hot summers, mild winters and strong solar conditions.
With SíAir, SíSand and SíWater, the home remains comfortably cool in summer — without electricity or air conditioning — and uses stored solar heat in winter for stable temperatures.
This makes it ideal for regions with high energy costs or limited infrastructure.
The 72 m² model provides ample space for vacation living, rental units, staff accommodation or permanent residence.
It is modular, transportable and can be assembled in just a few days — while maintaining a solid, durable, Mediterranean appearance.
With sustainable materials and fully autonomous supply systems, the Sí-House is perfectly suited for Mediterranean land plots, fincas, eco-resorts or off-grid developments.
Sí-House 144 m² Mediterranean spaciousness in a modern modular home
Bright, generous, and ideal for warm climates.
The 144 m² Sí-House is designed for Mediterranean environments, featuring expansive architecture, large windows and an open layout that brings natural light into the home.
The combination of solid visual appearance and modern container-frame engineering ensures rapid construction, excellent durability and optimal thermal performance.
With two living levels, the 144 m² model offers plenty of space for families, home offices or vacation stays.
A wide, covered terrace provides shade during summer and extends the living area outdoors.
Inside, high ceilings, timber elements and natural stone finishes create a warm Mediterranean atmosphere.
All Sí-Houses can operate fully autonomously - with SíAir cooling, SíWater storage or SíSand heat supply.
This significantly reduces energy costs without compromising comfort.
Ideal for sunny regions such as Spain, Greece, Italy, Portugal and the Mediterranean islands, where natural cooling and sustainable architecture are essential.
Sí-BoFe-1000
Erdluft-Bohrfeld zur Lufttemperierung
Erdluft-Bohrfeld zur Lufttemperierung
Der Sí-BoFe-1000 nutzt die stabile Bodentemperatur von etwa 8–12 °C, um Außenluft passiv zu temperieren.
Einsatzbereiche
1. Wärmepumpen-Vorstufe
Vortemperierung der Ansaugluft für Luft-Wärmepumpen.
Reduziert Vereisung und verbessert die Arbeitsbedingungen.
2. Bestandteil der Sí-Climate Systems
Passive Temperierung der Zuluft für:
• Gebäude
• Gewächshäuser
• Ställe
Technik
DN200 Doppelkanal-Rohr mit Trennsteg.
Luft strömt im Vorlauf nach unten und im Rückkanal wieder nach oben.
Vorteile
• nur ein Bohrloch pro Luftkreis
• kompakte Bauweise
• geringer Strömungswiderstand
• schnelle Annäherung an die Bodentemperatur
Sí-Po-1000
365 Tage Wärme für Pool und Teich – ohne Strom, ohne Wärmepumpe
Mit dem Sí-Po-1000 lässt sich Wasser ganzjährig passiv temperieren.
Das System nutzt Erdtemperatur, thermische Masse und natürliche Luftströmung zur Stabilisierung der Wassertemperatur.
Eigenschaften des Systems:
• kein Kompressor
• keine Wärmepumpe
• kein Drucksystem
• keine laufenden Energiekosten
• passives physikalisches Prinzip
Der Bauplan zeigt den Aufbau eines unterirdischen mineralischen Wärmespeichers mit Luftwärmetauscher zur Temperaturstabilisierung von:
• Pools
• Gartenteichen
• Aquakulturbecken
Der Leitfaden richtet sich an Selbstbauer und beschreibt Planung, Aufbau und Betrieb des Systems.
Sí-ELB-1000
Wir geben jeden Tag unser Bestes, um unsere Kunden glücklich zu machen
Der Sí-ELB-1000 beschreibt den Aufbau eines kompakten unterirdischen Wärmespeichers für Gewächshäuser und Frühbeete. Das System nutzt einen mineralischen Sandspeicher in Kombination mit Erdluft und natürlicher Luftströmung, um Temperaturen zu stabilisieren.
Der Speicher kann Temperaturschwankungen zwischen Tag und Nacht ausgleichen und ermöglicht eine verlängerte Nutzung von Gewächshäusern ohne aktive Heizung.
Das System arbeitet ausschließlich mit:
• thermischer Masse
• Bodentemperatur
• natürlicher Luftbewegung
Der Bauplan umfasst rund 90 Seiten Dokumentation mit Bauanleitung, Systemprinzip, technischen Zeichnungen und Betreiberhinweisen.
Typische Einsatzbereiche
• Gewächshäuser
• Frühbeete
• Selbstversorgergärten
• kleine Gartenanlagen
Typische Materialkosten: ca. 800–2000 € je nach Region und Materialwahl.
Our Project: Rethinking the Future
On site, we determine the most suitable hot-water system for each project.
Possible solutions include large cistern buffer tanks combined with vacuum tube collectors, solar mirrors or water-bearing fireplaces.
In addition, thermal sand storage captures surplus summer energy and makes it available in winter.
Additional Services
Masonry Cistern (Hot & Cold Water)