Energy Efficient Houses

An Energy Efficient house typically uses 20-30 % less energy than a standard house. It also greatly decreases the percentage of heat loss escaping through the buildings fabrics.

The differences between an Energy Efficient house and a standard house are as follows:

  • Improved Insulation
  • Increased Window Quality
  • Better Air Tightness Levels
  • Implemented Heat Recovery Ventilation Systems
  • Better BER Rating

At Passive House Builders, we use DEAP (Dwelling Energy Assessment Procedure) software to design Energy Efficient houses. This software ensures we comply with building regulations and enables us to produce a building energy rating cert (BER) for the house on completion of the project.

DEAP software is carefully designed to ensure a building complies with Kotyo Protocol which results in reduced CO2 emissions in the building. While the building fabric is assessed in the software it is possible to achieve an A1 rating by using bolt on renewable technologies (e.g. windmill, photovoltaic panels, heat pumps etc).

Client testimonials


“Passive House Builders Ltd., designed, built and certified our Energy Efficient home back in late 2008.

We would have no hesitation in recommending PHB. We felt the stress of the project was greatly reduced due solely to the professional manner in which the project was managed from start to finish.”


“We first approached PHB in 2008 with our plans already designed. PHB made us aware of our options and to this day we have not looked back. Throughout the project we found the entire team to be helpful and approachable.

No matter when we had a question regarding the project, PHB were only a phone call away.”