We are certified Passivhaus specialists based in Portsmouth Hampshire, who can help you to design, build or retrofit low energy and comfortable buildings.  We can help with all aspects of Passivhaus design, from working through the early design stages to full on-site certification. 

From Passivhaus to Net Zero, we can help you with your project, working to reduce energy demand, whilst keeping your building warm in winter and reducing overheating risk in summer. Once built we can assist in monitoring your project to make sure its performing as expected. 

We can help with building modelling in Passive House Planning Package (PHPP), thermal bridge optimising, energy and planning statements, overheating risk assessments, post occupancy monitoring and Part L and Part O compliance. 

As Passivhaus consultants we work with a range of clients, from Housing Associations and Local Authorities, large and small house builders, architects and home owners.