SAP Calculations & EPCs For Conversions
If a property undergoes conversion to a residential dwelling or an existing residential unit is divided into multiple dwellings, SAP Calculations are necessary to demonstrate compliance with Building Regulations Part L1b.
SAP Calculations, in accordance with Building Regulations Part L1b, evaluate various aspects of the development, including thermal enhancements, wall/floor & roof partitions, glazing, primary heating systems, and more.
Learn more about our SAP calculations service, including the process and what it entails, by visiting our website.
For projects that involve extensions, see our guide on SAP calculations for extensions
Frequently Asked Questions – SAP Calculations for Conversions
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When are SAP calculations required for conversions?
SAP calculations are needed when a property is converted into a residential dwelling or an existing dwelling is split into multiple units.
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What do SAP calculations for conversions evaluate?
They assess thermal improvements, walls, floors, roofs, glazing, primary heating systems, and other aspects relevant to Part L1b compliance.
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Do conversions need SAP calculations for extensions too?
Yes, if an extension is involved, SAP calculations must also cover it to ensure regulatory compliance.
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Who performs SAP calculations for conversions?
Only certified On Construction Domestic Energy Assessors (OCDEA) can carry out SAP assessments.