Passive houses in Castellón.
The Passive House standard applied to the Mediterranean: maximum energy efficiency, minimal impact and year-round comfort.
A passive house (Passive House or Passivhaus) achieves optimal thermal comfort with minimal energy demand. It doesn't rely on boilers or air conditioning: the design itself — orientation, insulation, windows and ventilation — manages the indoor temperature through all four seasons.
In Castellón's Mediterranean climate, with dry summers and mild winters, the Passive House standard reaches its full potential. Olive Soul's homes, designed by architect Jaime Sanahuja, apply these criteria on 1-hectare estates in the Bajo Maestrazgo — a territory with more than 300 days of sunshine per year.
Up to 90% less energy for climate control
The Passive House standard requires that heating and cooling demand does not exceed 15 kWh/m²·year, compared to 150–200 kWh/m²·year for a conventional home in Spain.
Por qué una casa pasiva en Castellón
Effortless comfort
A stable indoor temperature of 20–25 °C all year, with no draughts, cold spots or thermal noise. The result is a home that feels different from day one.
Real long-term savings
The additional investment in Passive House construction is recovered through energy savings over a 10 to 15-year horizon. In Castellón, with rising electricity tariffs, the financial argument grows stronger each year.
Health and air quality
The mechanical heat-recovery ventilation system continuously renews indoor air, filtering dust, pollen and pollutants. Particularly valuable in the rural setting of the Bajo Maestrazgo.
Olive Soul applies the Passive House standard in the Bajo Maestrazgo. Request the technical dossier.
View the dossier
Passive House in the Maestrazgo olive grove
Olive Soul's homes in the Bajo Maestrazgo are a real-world example of Passive House in the Mediterranean: 20 cm ETICS insulation, triple-glazed windows, mechanical ventilation with heat recovery, green roof and estates with ancient olive trees that act as natural thermal regulators.
FAQs about passive houses in Castellón
How does a passive house differ from a conventional home in Castellón?
A passive house incorporates continuous high-density insulation, triple-glazed windows, airtightness and mechanical heat-recovery ventilation. The result is a home with an energy demand 80–90% lower than conventional, with greater thermal and acoustic comfort.
Does the Passive House standard work in Castellón's Mediterranean climate?
Mediterranean climate is, in fact, one of the most favourable for Passive House: mild winters reduce heating demand, and superior insulation keeps interiors cool during dry summers. Castellón, with over 300 days of sunshine per year, also allows extensive passive solar gain.
How much more expensive is a passive house compared to conventional construction?
The extra cost of Passive House construction ranges from 10 to 20% above the conventional build cost, depending on the construction system. This premium is offset by accumulated energy savings over 10 to 15 years and by the property's enhanced market value.
Do Olive Soul homes have official Passive House certification?
Olive Soul's homes are designed to Passive House (Passivhaus) criteria by architect Jaime Sanahuja. Official certification by the Passivhaus Institut (PHI) is completed during and after construction. Request the technical dossier for full details of the construction system.
Where exactly are Olive Soul's passive houses in Castellón?
Olive Soul's homes are located in the Bajo Maestrazgo (Baix Maestrat), in the north of Castellón province, on estates of over 1 hectare with millenary olive trees. The area combines exceptional landscape, national road access and fibre broadband connectivity.