What Is An EPC?
January 29, 2026
If you own, rent, build, or manage property in the UK, you’ve probably come across the term EPC. But what does it actually mean, and
As-Built SAP & Energy Performance Certificates (EPCs)
As-Built SAP calculations and EPCs are essential for demonstrating the energy performance and regulatory compliance of newly built, converted, or refurbished homes. At Melin Energy Consultants, we provide accurate, reliable As-Built SAP assessments and EPCs for residential projects across the UK, helping developers and homeowners achieve energy-efficient, compliant properties.
What is an As-Built SAP & EPC?
An As-Built SAP calculation evaluates the actual energy performance of a completed home, reflecting insulation, glazing, heating, and ventilation systems. EPCs translate this into a simple rating from A (most efficient) to G (least efficient), providing a clear record of compliance with Part L of the Building Regulations and guidance on running costs.
Domestic EPCs – New Builds, Conversions & Refurbishments
We produce As-Built SAP calculations and Domestic EPCs for new homes, extensions, conversions, and refurbishments. Certificates are based on the actual as-built specifications, including air tightness testing. EPCs help homeowners, buyers, and landlords understand energy efficiency, running costs, and practical improvements to enhance comfort and reduce bills.
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Why Accurate As-Built EPCs Matter
Accurate EPCs depend on correct input data, including insulation, glazing, heating, ventilation, and air tightness results. Incorrect information can lead to non-compliance or inaccurate ratings. Our team ensures all data is correctly assessed, delivering reliable, defensible EPCs that reflect the true performance of your home.
Improving Energy Performance
As-Built SAP and EPCs are benchmarks for energy efficiency. We provide practical advice on optimising building fabric, heating systems, and insulation. This helps reduce running costs, improve comfort, and support long-term sustainability, ensuring your residential project is energy-efficient and future-ready.
What Information You’ll Need to Provide
To complete an As-Built SAP calculation and EPC for a home, we need:
Architectural and as-built drawings
Insulation, glazing, heating, and ventilation specifications
Air tightness test results
Details of any installed renewable energy systems
Providing accurate information ensures a smooth process and compliant certification.
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Request Your Residential As-Built SAP & EPC
Ensure your home is compliant, energy-efficient, and future-ready. Contact Melin Energy Consultants today to arrange expert As-Built SAP calculations and Domestic EPCs with practical advice tailored to your residential project.
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