Whole House SAP for Your Extension
More glass than the standard allowance permits? A whole house SAP comparison looks at your existing home and extension together, so improvements elsewhere in the house can help make your extension design work. You'll receive both sets of SAP calculations and the calculated U-values for building control. Advice and reasonable revisions are included.
Your assessment, explained
An Area Weighted U-value check looks at improvements within the extension. Whole house SAP takes the existing home into account too. Upgrading older windows, insulation or heating elsewhere in the house can help offset the additional energy demand from your extension.
We prepare two sets of SAP calculations: your home with the proposed extension, and the reference design used for comparison. You'll receive both sets of calculations and all calculated U-values for building control.
What you'll receive
- Two Sets of SAP Calculations
- U-value Calculations
This booking covers one whole house comparison for your extension. Enter the total floor area of the existing home and extension when choosing your package.
