Documenting the construction of a Passive House ADU in Oshawa, Ontario — from permit to certification.https://blog.unityhaus.ca/https://blog.unityhaus.ca/blog/oshawa-adu-the-beginning/https://blog.unityhaus.ca/blog/oshawa-adu-the-beginning/Why we're building a Passive House accessory dwelling unit in Oshawa, Ontario, and what we hope to prove with this project.Fri, 19 Jun 2026 00:00:00 GMThttps://blog.unityhaus.ca/blog/the-day-my-backyard-disappeared--and-what-passive-house-construction-taught-me/https://blog.unityhaus.ca/blog/the-day-my-backyard-disappeared--and-what-passive-house-construction-taught-me/Week one of excavating a Passive House ADU in Oshawa revealed three things no one talks about — access loss, family dynamics, and the brutal reality of material staging on a small city lot.Sat, 20 Jun 2026 00:00:00 GMT