Denby Dale PassivHaus

Green Building Store/ Derrie O’Sullivan, West Yorkshire, 2010


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  • Site plan    
  • Ground floor plan    
  • First floor plan    
  • North elevation    
  • East elevation    
  • South elevation    
  • West elevation    
  • Window detail    
  • Roof detail    
  • Foundations and ground floor detail    

Energy-efficient three-bedroom detached retirement home built to PassivHaus standards using cavity wall construction

The house was designed using the Passivhaus Planning Package (PHPP) by an inter-disciplinary team led by Green Building Store’s Bill Butcher.

The building is the first certified PassivHaus in the UK to be built using cavity wall construction and demonstrates how PassivHaus methodology can be applied to traditional UK construction methods. The house achieves a space heating need of 15 kWh/m2/year and airtightness of 0.33 ach @ 50 Pa (to Passivhaus and Euronorm standard).

To get cavity wall construction to perform to Passivhaus standard a number of original design details, particularly around the junctions of elements such as floors and roof to walls and windows were developed.

The project aims to demonstrate how UK designers and builders using cavity wall construction can minimize thermal bridging, improve energy efficiency and maximise the airtightness of projects.


  • Begun: May 2009
  • Completed: Apr 2010
  • Floor area: 118m2
  • Sector: House
  • Total cost: £150,000
  • Procurement: Green Building Store
  • CO2 Emissions: 18kg/m2/year
  • Address: Denby Dale, West Yorkshire, United Kingdom

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