Articles in Category: Passivhaus EnerPHit

Clifton Hill

on Tuesday, 06 January 2015. Posted in Passivhaus EnerPHit

Passivhaus retrofit Winchester

Greebox Associates worked with Rupert Cook of Architecture PLB on a Passivhaus retrofit with an extension on his house in Winchester, Hampshire. 



 This house has been designed to meet the Passivhaus Enerphit standard. The complex shading on the site required careful modelling in PHPP. As the house is semi-detached the party wall details needed particular thought. This is to ensure the neighbouring property was not adversly effected and the squirrels were managed.

 Greenbox Associates are providing the following services:

  • PHPP modelling
  • Thermal bridge calculations
  • Assistance with design specification and materials
  • On-going support though certification process.

To find out more please call us on 02392 655 652 or email This email address is being protected from spambots. You need JavaScript enabled to view it.

High Trees

on Tuesday, 03 February 2015. Posted in Passivhaus EnerPHit


Greenbox Associates have worked with Ken Wingate of Made in Place Architects on his own Passivhaus retrofit and extension project in Bognor Regis, West Sussex. This 1960's detached property was very energy inefficent, typical of a property of this time and the internal layout has been improved.

The house has been modelled in PHPP and the construction details amended to meet the requirements of the PassivHaus Enerphit standard. The new design has a Passivhaus design stage certificate which is the first step in achieving overall EnerPHit certification


 Bognor site 2Front elavation

The refurbishment works are currently underway, and the PHPP files are being reviewed by the certifiers.
















Services provided by Greenbox Associates:

  • PHPP modelling 
  • Thermal bridge modelling
  • Advice on construction details and materials
  • Shading analysis

An update on this project is featured on the Passivhaus Trust Website