Residential energy
SAP for extensions
Understand the energy implications of your extension before the design is fixed.
What this service helps you do.
Extensions need an assessment route suited to the existing dwelling and the proposed work. Where a SAP-based comparison is appropriate, Ordellis helps explain how the extension, its glazing and any improvements to the existing home fit together.
What’s included.
- Review of the project information and the appropriate Part L assessment approach.
- SAP-based comparison calculations where this is the agreed compliance route.
- Assessment of proposed fabric and glazing specifications.
- A report describing the agreed assumptions and calculation results.
What we need to get started.
- Existing and proposed plans, elevations and sections.
- Existing construction and building services information.
- Proposed insulation, glazing and heating specifications.
- Details of any improvements to the existing dwelling.
A full SAP calculation is not the only route for an extension. The appropriate approach is agreed after reviewing the proposed work and the information available.
Your questions, answered.
Does every extension need SAP?
No. Requirements depend on the proposal. Share your drawings so the appropriate calculation scope can be established.
Can you help with a heavily glazed extension?
Yes. Send glazing areas and specifications alongside the existing and proposed drawings so the design can be reviewed within the appropriate assessment route.
Connected expertise
Services that work together.
Tell us what you’re building.
Share your drawings and project location for a clear scope and quotation.
