Expert Guidance For Achieving Compliance

If you’re converting an existing building, prepare the initial SAP calculations at the design stage and submit them to local building control before starting any development work.

Once you complete the conversion, prepare an as-built SAP calculation that reflects any design changes and the final details of heating, hot water, and ventilation systems.

Then, produce the final SAP report and submit it to building control, along with an On Construction Energy Performance Certificate (EPC). Building control requires the EPC before issuing the completion certificate, and you’ll need it for the property’s sale or rental.

The earlier you appoint a SAP assessor, the greater your chances of success. Early involvement allows for a thorough review of your design, helping to identify potential issues before they arise.

Using the plans and drawings provided at the design stage, the assessor inputs data into approved software to assess whether the proposed dwelling complies with Building Regulations for fuel and power conservation. If the initial specification doesn’t meet the requirements, the assessor can model alternative designs to achieve compliance.

The assessor will identify any shortfalls and recommend solutions to the designer. You can then incorporate these changes into the revised design, ensuring the SAP calculations are compliant and ready for submission to building control.

To comply with Building Regulations Part L1, you should undertake SAP calculations at the design stage, during construction, and on completion of the build process. This approach ensures you can account for and address any changes during the build that may impact the project’s overall energy rating.

By involving Property Compliance early in the design process, we can produce the required SAP calculations and Predicted Energy Assessment (PEA) while offering expert advice on construction methods to achieve optimal energy efficiency. Once you complete the build, we will also provide the necessary Energy Performance Certificate (EPC).

An Energy Performance Certificate (EPC) measures the energy efficiency and CO₂ emissions of a building upon completion of construction. It forms part of the as-built SAP and includes recommendations for improving the property’s energy performance. We will issue the EPC and lodge it, allowing the property to be signed off and sold.

Before we can issue the EPC, we must conduct a successful Air Leakage Test within the new building. We will also provide the necessary Air Test reports and certificates, along with Part G Water Consumption Calculations, to confirm that regulatory standards have been met.

The Standard Assessment Procedure (SAP) is the UK Government’s method for energy rating dwellings. We use it to calculate the energy performance of buildings and demonstrate compliance with Building Regulations Part L1.

During the construction of your new building, we typically produce a SAP twice:

• Design Stage SAP – We carry out the Dwelling Emission Rate (DER) and Target Emission Rate (TER) calculations and submit them to local building control before work begins. If the property is to be sold off-plan, we can create a Predicted Energy Assessment (PEA).

• As-built SAP – We conduct this near the completion of construction to confirm that the building meets compliance standards. We then produce an Energy Performance Certificate (EPC) and lodge it.