
One of the most urgent challenges in buildings today is how to affordably retrofit existing ones. Too much of our current building stock wastes energy and is unhealthy or uncomfortable to occupy, especially in low-income communities and communities of color. In order to limit global warming to 1.5°C, the International Energy Agency's Net Zero by 2050 Roadmap urges a step jump in "zero-carbon-ready" retrofits to a rate of 30 million dwellings per year through 2030. Passive House retrofits provide a proven pathway to dramatically reduce the energy use and operation carbon emissions of existing buildings of all types. Both PHI and PHIUS offer retrofit certification pathways, and project teams around the world are tackling retrofits of everything from single-family brownstones to apartment towers.
Read, view, and listen to Passive House retrofit examples and insights in the articles, videos, and podcast interviews below.
Articles

6/26/25
Avoiding Health Problems with Better Housing
Article, Retrofit, Health & IAQ

5/29/25
Pairing EIFS with Stone Wool Insulation: Two Case Studies
Article, Insulation, Retrofit, Sponsored

5/23/25
Lessons Learned from the Historic Retrofit of Rubin Hall
Article, PHI, Retrofit, Student Housing

2/12/25
Airtightness in Residential Retrofits | Project of the Month | PHA Live!
PHA Live, Video, Retrofit, Airtightness
Videos

6/27/25
High Performance Skyllights Made by Fakro | Component Spotlight
PH Component Spotlight, Video, Fenestration
6/25/25
Modeling for Resilience & Performance | Next Up! | PHA Live!
PHA Live, Video, Energy Modeling

6/18/25
Building Strategies for the Southeast: Net Zero Passive House | Construction Tech | PHA Live!
PHA Live, Video, Electrification

6/11/25
What's Next After Passive House | Project of the Month | PHA Live!
PHA Live, Video, Resilience
Projects

4/18/24
Colombini Residence
Project Case Study, Mixed Use, New Construction, Single Family, Mass Timber

4/18/24
Bird's Wing Passivhaus + Duplex
Project Case Study, Mixed Use, New Construction, Multifamily, Single Family, Duplex/Multiplex, Mass Timber, PHI

4/18/24
Leichhardt enerPHit
Project Case Study, Mixed Use, Retrofit, Single Family, PHI

4/18/24
Bellwether on Main
Project Case Study, New Construction, Phius, Single Family