SAP Calculations
SAP (Standard Assessment Procedure) calculations assess the energy efficiency of residential buildings, predicting energy use, carbon emissions, and fuel costs, ensuring compliance with Building Regulations Part L.
Request a QuoteWhy SAP Calculations Are Needed
- Building Regulation Compliance – Required for new builds, conversions, and some extensions.
- Energy Performance Certificates (EPCs) – Determines the EPC rating for a property.
- Sustainability & Carbon Targets – Helps developers meet carbon reduction goals.
- Design Optimization – Identifies ways to improve energy efficiency.
Key Elements of SAP Calculations
Building Fabric Performance
Insulation levels, airtightness, and thermal bridging assessment.
Heating & Hot Water Systems
Efficiency of boilers, heat pumps, and water heating systems.
Ventilation
Analysis of natural and mechanical ventilation impact on energy use.
Renewable Technologies
Integration of solar panels, heat pumps, and other low-carbon solutions.
Lighting
Assessment of energy efficiency of installed lighting systems.
Carbon Emissions
Predicted CO₂ output of the property.
When Are SAP Calculations Required?
At Design Stage – Before construction, to ensure compliance.
As-Built Stage – After construction, to confirm final energy performance.
SAP Rating Outcome
SAP scores generate EPC ratings from A (most efficient) to G (least efficient). A higher SAP score means lower energy costs and better sustainability.
Improve Ratings
Advice to enhance energy efficiency and achieve higher SAP scores.
Carbon Reduction
Strategies to reduce carbon emissions and meet sustainability targets.
Design Optimization
Identify adjustments to improve overall building performance.
Compliance Assurance
Ensure full compliance with Part L regulations and EPC standards.