Ultra-Low Energy
Passivhaus buildings use up to 90% less heating & cooling energy than traditional buildings.

Knowledge Hub
Bespoke New Homes
Benjamin Henry delivers Passivhaus & high-performance construction, combining precise building fabric, airtightness, insulation & coordinated ventilation with established residential craftsmanship.
At Benjamin Henry Limited, sustainability is approached through the way a building is designed, detailed, constructed & used over time. Where appropriate, we work with responsibly sourced materials & carefully coordinated low-energy systems.
Key Benefits
Passivhaus buildings use up to 90% less heating & cooling energy than traditional buildings.
Consistent indoor temperatures year-round with superior air quality via MVHR systems.
Triple glazing & airtight construction reduce outside noise to a whisper.
Decades of research & real-world projects behind a proven, future-proof approach to building.
As the UK moves toward net-zero, Passivhaus already exceeds the standards of tomorrow.

Crafted In-House
The construction industry has a significant environmental impact, while thoughtful design & accurate construction can reduce the energy a completed building needs throughout its life.



Designed Around You
Benjamin Cavaghan is listed by the Passivhaus Institute as a Certified Passive House Tradesperson, bringing recognised building-performance knowledge into the wider construction team.
Developed in Germany in the early 1990s, the Passivhaus (or Passive House) standard is one of the most rigorous energy-efficiency standards in the world. It focuses on very low heating & cooling demand through considered design, continuous insulation, airtight construction, careful junctions & ventilation with heat recovery.
Passivhaus principles can inform new homes & carefully assessed retrofit projects. Some clients pursue full certification, while others use the principles to set a clear high-performance brief.


Our experience includes the retrofit of a large Victorian home towards the EnerPHit standard. The work included substantial insulation upgrades to walls, floors & roofs; UPVC triple-glazed Passivhaus-certified windows; underfloor heating; & airtightness detailing using specialist tapes & membranes. Mill Bank is Benjamin Henry's first full new-build Passivhaus project.