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Good design is in our nature.


Tandem Architecture Écologique is an architectural practice with expertise in energy efficiency and Passive House Design (Passivhaus). Sustainability is at the heart of the practice, and this goes beyond technical expertise: Tandem strives to create beautiful spaces that enrich daily life and evolve to meet the needs of a changing world.


Are you dreaming up a project driven by sustainability? Let’s talk! Rather than limiting its practice to specific types of buildings, Tandem works on projects with people who share its values and its desire to make the world a better place. No matter how small or large your project may be, if you have a passion for sustainability and good design, get in touch!

What is Passive House Design? (a.k.a. Passivhaus)

Bâtiments maison passive

The Passive House Standard is an international energy efficiency standard that applies to all building types (not just houses!).

Conventional building wasting energy
Conventional Construction
Energy efficient passive house
Passive House Construction
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