Hello
Homes that are warm in January and cool in July, with heating bills you can laugh at.
We are Ökohaus: Passivhaus and low-energy builders, born in Cornwall. Fabric-first, airtight, built properly once.
Tell us what you are dreaming of
A new build, a warm retrofit, an extension, or just an idea taking shape. Leave your details and Andrew, our founder, will call you back personally, usually the same day.
Your details go straight to Ökohaus and nowhere else. No mailing lists, no sharing.
What we build
1
New homes
Self-builds and one-off houses to Passivhaus and near-Passivhaus standards.
2
Deep retrofits
Older Cornish homes made warm, dry and efficient without losing their soul.
3
Extensions
More space, built to the same fabric-first standard as everything we touch.
Why it matters
Quiet, even warmth in every room.
No cold corners, no radiators roaring against draughts.
Fresh, filtered air all year round.
Ventilation that keeps the house healthy while it keeps the heat.
Heating bills measured in pennies a day.
The fabric does the work, so the meter barely turns.
Keep us in your pocket
On the tools and looking for a crew that builds properly?
Join us