International Passive House Open Days 2018


Sharing Passive House experiences with others


From the 9th – 11th of November, Passive House buildings all over the world will open their doors to visitors as a part of the 15th International Passive House Open Days. Experience the indoor comfort first hand by visiting an open Passive House building near you!


"Proven better indoor air quality, high living comfort and permanently affordable energy costs - these are the advantages for the client or investor," says Prof. Dr. Wolfgang Feist, founder of the Passive House Institute and co-initiator of the Passive House Days. "Protecting the environment is virtually guaranteed along the way, and with the Passive House the energy turnaround is affordable for everyone."


Passive House stands as the solid basis for a sustainable energy future, combining superior user comfort and healthy indoor environments with minimal energy use. Offering long-term savings, Passive House is the affordable solution for all those looking to build.


Do you enjoy the comfort of a Passive House building? By participating with your own Passive House home, office, or even construction site, you can share your experiences of living or working in a Passive House building and help spread the word of the benefits of these highly energy efficient buildings. Please help us raise awareness by opening your buildings to the public.


How to register your project


To participate in the International Passive House Open Days, please register your project with the International Passive House Database.


Registration is free of charge but first-time users will be asked to create an account. If you would like to open a Passive House building already registered with the Passive House Database, simply fill out the information on this year’s Passive House Days viewing appointments and update your contact data if necessary. 


Click here for detailed instructions


Visit a project


All participating projects and viewing details as well as guided tours will be published on the Passive House Database as of 1 September 2018. Should you have any questions, please feel free to contact iPHA at


Mid-year event



From 8 – 10 June 2018, the mid-year International Passive House Open Days, organised by iPHA and its international Affiliates, once again took place. The mid-year event allows participants to experience Passive House buildings during the summer (or winter) months as opposed to the main event in November. 


This year, over 100 Passive House projects opened their doors to the public, with owners and architects sharing their experiences and showing what Passive House is all about. 


Bicycle tour of Passive House multi-family buildings in Vienna Copyright: Passivhaus Austria


View more photos on Twitter!

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The international network for Passive House knowledge
Promoting the Passive House Standard worldwide

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