PassivHaus

Passivhaus Trust member logo indicating affiliation with the Passivhaus Trust and commitment to low-energy, high-performance building standards.
Certified Passivhaus Designer badge indicating professional qualification in Passivhaus design and expertise in high-performance, low-energy building standards.

PassivHaus

PassivHaus is a quiet revolution in design — where architecture and nature exist in effortless harmony. It is a building standard devoted to human comfort and environmental care, creating spaces that are warm in winter, cool in summer, and always beautifully efficient. Through exceptional insulation, airtight construction, and continuous fresh air, PassivHaus buildings use remarkably little energy while nurturing wellbeing and stillness within.

So what is PassivHaus (or Passive House) and why do Hills & Co. use this?

  • Simplified forms that minimise heat loss and celebrate purity of design.

  • Thoughtful detailing — where every junction and layer has purpose.

  • Material efficiency, focusing on performance rather than excess.

  • A deep commitment to human comfort — stable temperatures, quiet interiors, and filtered, fresh air.

  • A performance-driven approach that transcends style — adaptable to modern, traditional, or vernacular architecture alike.

We embrace these principles because they mirror our own — thoughtful creation, conscious craft, and design that listens. PassivHaus aligns with our belief that beauty and sustainability are inseparable; that truly nurturing spaces are those shaped with empathy, precision, and respect for the natural world.

Hills & Co. are a registered ‘Certified PassivHaus Designer’ with the PassivHaus Institute, achieved following a stringent study programme and examination.

Architecturally, PassivHaus encourages:

Cross-section CAD drawing of a PassivHaus building illustrating airtight construction, insulation layers, ventilation strategy, and internal spatial organisation designed to achieve high thermal comfort and low energy use.