on Thursday, 17 May 2012.

Greenbox Associates are Certified Passivhaus Design Consultants and can assist with the following for both new build and existing buildings:

  • Design and specification
  • PHPP modelling
  • Thermal bridge calculations
  • Site training
  • Air testing
  • Certification


To achieve the passivhaus standard care and attention to detail needs to be taken early in the design stage. This will be done through the calculation tool developed by the passivhaus institute in Germany called Passivhaus Planning Package (PHPP).

Greenbox Associates can support your Passivhaus projects by:

  • Bespoke consultancy to assist in the development of a specification to meet the stringent Passivhaus standard.
  • PHPP calculations.
  • Thermal bridging calculations using acredited software
  • Air tightness testing.
  • Support through the certification process
  • Providing workshops and CPD on Passivhaus design and using PHPP.



Joy Cottage


Lower Lane

Joy cottage west elavation                Lower Road South 
 Joy cottage south elavation    lower Road north
Joy Cottage is a new build Passivhaus on the Isle of Wight. The owners Tony and Freya wanted low heating bills and comfort in thier new home. Traditional materials are combined with a modern design. Joy cottage now has planning permission and is proceeding into the build phase  

Lower Lane is in the planning phase and PHPP modelling is almost complete. Again traditional materials are combined with a modern design.

Large areas of south facing glazing mean that careful consideration must be given to overheating in summer

For more details click here                   For more details click here

See all of our Passivhaus new build projects here


EnerPHit is the passivhaus standard for existing buildings.

We are currently working on two EnerPHit projects for local architects on thier own homes:

High Trees Bognor Regis                                   Clifton Hill Winchester                                                                                                                                                                           

See our EnePHit projects here

 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.