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atspace engineer with checklist

Not necessarily – compliance with Building Regulations Part L1B is automatically achieved if:
• The envelope of the extension is sufficiently well insulated
• Glazing is within the extension does not exceed 25% of the floor area
• Building services within the extension are of a sufficient standard.

However when considering an extension, it is advisable to speak with your local building control to determine what level of detail will be required in the SAP Assessment submission.

 
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