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The most recent Part L of the Building regulations requires that all new buildings need to comply with NZEBs (Near Zero Energy Building) i.e. an A2 or above EPC rating.

To satisfy Passive House Certifications, your building needs to achieve an A1 EPC rating. The cost of building a Passive House that achieve such standard is generally between 10% to 15% more expensive than a conventional house. However there is a cost saving over time an

What is the Cost of Building a Passive House?