Registration now open! UK Passivhaus Open Days

The UK Passivhaus Open Days 2025 return 27 - 29 June!

Have a certified (or soon-to-be-certified) Passivhaus building in the UK? Join a nationwide celebration of comfort, performance, and low-energy design in the 2025 Summer Passivhaus Open Days.

Whether you live in, designed, or built a Passivhaus, this is your chance to share your first-hand experience and inspire others. From 27 - 29 June 2025, during London Climate Action Week, we are calling on hosts to open their homes, sites, or commercial spaces for tours across the UK.