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On-Construction EPCs
What is an On-Construction EPC?
​An On-Construction Energy Performance Certificate is specifically designed for newly built, newly converted residential properties as well as properties being joined or subdivided into individual dwellings. It evaluates the energy efficiency of a dwelling based on detailed plans and specifications, using the Standard Assessment Procedure (SAP) methodology unlike standard domestic EPCs which use the RdSAP (Reduced data Standard Assessment Procedure). This assessment results in an EPC that reflects the property's anticipated energy performance upon completion.​
Note: New build commercial properties are assessed with a level 4 non-domestic EPC.

Why is an On-Construction EPC Important?
Securing an On-Construction EPC is not only a legal requirement but also offers several benefits:
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Regulatory Compliance: It ensures that the new dwelling meets the energy efficiency standards set out in Part L1A of the Building Regulations.
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Marketability: A favourable EPC rating can enhance the property's appeal to potential buyers or tenants, as it indicates lower energy costs and a reduced environmental impact.
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Sustainability: It promotes the adoption of energy-efficient designs and technologies, contributing to environmental conservation and reduced carbon emissions.
The process of obtaining an On-Construction EPC
The journey to acquiring an On-Construction EPC involves several key steps:
1. Design Stage Assessment:
An accredited On-Construction Energy Assessor reviews the architectural plans and construction specifications to conduct an initial SAP calculation.
2. Predicted Energy Assessment (PEA):
Predicted Energy Assessment (PEA): Based on the design stage assessment, a PEA is produced, providing an early indication of the property's energy performance.
3. As-built Assessment:
Upon completion of the construction, the assessor verifies that the building has been constructed as per the specifications and performs a final SAP calculation, incorporating results from mandatory tests such as air tightness testing.
4. EPC issuance:
Upon completion of the construction, the assessor verifies that the building has been constructed as per the specifications and performs a final SAP calculation, incorporating results from mandatory tests such as air tightness testing.
Choosing the right assessor
It's crucial to engage a qualified and accredited On-Construction Energy Assessor to ensure a smooth and compliant process. At Haptic EPC, we specialise in providing comprehensive energy assessments for new constructions, ensuring that your project meets all regulatory requirements and achieves optimal energy performance. Contact us today about your on-construction requirement.
Building Regulations compliance for new-builds
Haptic EPC Ltd. 21-27 Lamb's Conduit Street, London, England WC1N 3GS.
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