SAP Assessments

“With over 10 year’s experience, Gladwood have excellent knowledge on how best to approach a project in terms of build costs, achieving the desired results regarding EPC banding and Part L compliance.”


Building Regulation Requirements:

New Build Dwellings…

  • New build dwellings require a SAP calculation (energy assessment) to be carried out to demonstrate compliance with Building Regulations Part L1A.

  • The SAP assessment takes into account the efficiency of thermal elements i.e. walls, roof, windows, heating systems, ventilation systems and design air permeability rate.

  • The SAP assessment should be carried out before starting work on site and forms part of your Building Regulations application.

  • At completion of the dwelling, an ‘As built’ SAP is generated which is also used to generate the EPC (Energy Performance Certificate). 


Dwellings with Proposed large Glazed extensions…

  • If a proposed extension has large amounts of glazing i.e. glazing of the proposed extension is greater than 25% of the extension’s internal floor area, then a SAP assessment is required.


Conversions/Material Change Of Use…

  • Conversions will require a SAP calculation and EPC at completion.

  • Thermal elements and heating and ventilation systems need to meet minimum standards highlighted in the Building Regulations. 


Typical Costs…

SAP assessments start from just £40.00+VAT, please contact us to discuss your requirements. Our in house accredited Energy Assessors will be happy to discuss any concerns regarding Part L and make the process as simple and stress free as possible.

We will also beat any like for like quotation!

Please contact us for a free quotation, or see further details on the links below:

SAP - New build Dwellings

SAP - New build Dwellings

Part L1a Conservation of Fuel & Power
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SAP - Large Glazed Extensions & Conversions

SAP - Large Glazed Extensions & Conversions

Part L1b Conservation of Fuel & Power - Dwelling Extensions with excessive glazing & Conversions
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