Rugby EAS

Energy Performance Certificates

Change of use EPC

SAP Calculations for Conversion Projects


Why choose Rugby EAS?

There are many reasons to appoint us to provide your SAP Calculations including:

  • Low-Cost Fixed Fees

  • Significant Discounts for Multiple Units

  • Independent Client Focused Advice

  • High Quality Customer Driven Service

  • Extensive Part L1A / Section 6 Compliance Advice and Support

  • U-Value Calculations Included

  • On Construction Energy Performance Certificates Included

  • Expedited Service Available On Request

  • Multi-Disciplined Team Providing a Range of Related New Build Services Under One Roof

Building conversion energy performance certificate

At Rugby EAS we pride ourselves on forming constructive working partnerships with our clients. Our highly experienced and fully accredited SAP Assessors offer unrivalled customer support and technical consultation focused on providing cost-effective and practical solutions to achieving compliance with Part L1A or Section 6.



SAP Calculations for Conversion Projects


SAP calculations are required for all buildings converted to new dwellings such as flat conversions and barn conversions in order to demonstrate compliance with Part L1B of the Building Regulations in England & Wales or Section 6 of the Scottish Building Standards.


The mandatory conversion SAP calculation assesses the thermal efficiency of the proposed building fabric including any upgrades that may be made, together with the energy requirements of the proposed heating, lighting and hot water systems of the planned property. Unlike new build SAP calculations, SAP assessments for conversions do not currently have to demonstrate compliance with any prescribed limits on carbon dioxide emissions.


SAP calculations are compared with the requirements of Part L1B or Section 6 and summarised within a brief report for submission to Building Control at the design stage before any construction work commences.


Upon completion of the conversion works, the respective SAP assessment is then upgraded to an As Built SAP Calculation incorporating any changes from the initial design and the finalised heating and hot water systems.


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