29/04/2026
What is Passivhaus, and why does it matter?
It’s often explained in terms of performance.
Energy demand, insulation, airtightness.
All of that is important.
But it doesn’t really describe what it’s like to live in one.
In practice, the difference is quieter.
Even, steady temperatures.
No draughts or cold corners.
Fresh air throughout the day.
Spaces that don’t fluctuate with the weather outside.
Less adjustment. Less effort.
The building simply does what it is meant to do.
The result is a home that feels calm, consistent and comfortable to live in.
In exposed places, where wind, rain and moisture are part of daily life, that consistency matters.
I’ve written a short piece exploring this in more detail:
https://www.davidjones.studio/post/what-is-passivhaus-cornwall
Valley House shown here was designed by David Jones and is being delivered in collaboration with Kast Architects