View over Mawgan Porth beach from Wayside.

Passive House: The Gold Standard for Sustainable Living

When it comes to building truly sustainable, low-energy homes, nothing sets the bar higher than Passive House (or Passivhaus, as it was first defined in Germany). Recognised worldwide as the most rigorous energy standard, Passive House is about more than reducing bills — it’s about creating homes that are comfortable, healthy, and resilient for generations to come.

https://www.passivhaustrust.org.uk/

At ARCO₂, we’re proud to be at the forefront of this movement in Cornwall and the South West. With over 22 years of experience in sustainable architecture, a portfolio of award-winning low-energy homes, and a team with Passive House and AECB CarbonLite Retrofit qualifications, we are perfectly placed to help you realise a Passive House project that balances beauty, performance, and lifestyle.

https://www.arco2.co.uk/a-year-of-award-winning-architecture-2025-in-review/

 What Makes a Passive House Different?

Passive Houses achieve exceptional energy efficiency and comfort by focusing on five key principles:

  • Super insulation: Thick, continuous insulation wraps the home, keeping it warm in winter and cool in summer.
  • Airtight construction: Prevents draughts and heat loss, while improving control over indoor conditions.
  • Thermal bridge-free design: Careful detailing eliminates weak points where heat could escape.
  • High-performance glazing: Triple-glazed windows maximise natural light while maintaining efficiency.
  • Mechanical ventilation with heat recovery (MVHR): Provides fresh, filtered air year-round while recycling warmth from outgoing air.

The result? Up to 90% less heating energy compared to a standard UK home, alongside superior indoor air quality and consistent comfort.

Why Choose ARCO₂ for Your Passive House?

We don’t just design to Passive House principles — we’ve built our reputation on them. Here’s why ARCO₂ is the practice of choice for clients seeking the very best in sustainable living:

  • Experience that counts: Over 550 projects delivered, many inspired by Passive House standards, from sensitive coastal retreats to multi-generational family homes.
  • Proven track record: More than 120 awards recognising our pioneering role in sustainable architecture.
  • Qualified expertise: Directors and team members hold Passive House and AECB CarbonLite Retrofit qualifications, ensuring designs are backed by deep technical knowledge.
  • Integrated construction knowledge: Through our sister company, ADD Sustainable Construction, we’ve delivered some of the UK’s most advanced sustainable homes. This hands-on understanding makes our designs both visionary and practical.
  • Client-centred design: Every project begins with your lifestyle and aspirations. We create bespoke, one-off homes that are not only energy-efficient, but also a joy to live in.

Building the Future, Today

A Passive House is more than just a home — it’s a commitment to living well, reducing environmental impact, and creating a legacy for future generations. With energy prices rising and climate challenges growing, Passive House represents a smart, future-proof investment.

At ARCO₂, we believe the process of creating such a home should be engaging, enjoyable, and inspiring. Designing a Passive House with us means working with a team who shares your values and your excitement for what’s possible.

Keynvor awarded Regional Winner at LABC Awards 2024
Keynvor in Mawgan Porth, built to Passivhaus standards.

If you’re ready to explore what a Passive House could look like for you, let’s start the conversation today. Together, we can design a home that’s as sustainable as it is beautiful

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