SAP Calculations

RGP can prepare whole house SAP calculations nationally for new build properties.

What is a SAP rating

A SAP rating is required for all new dwellings in order to demonstrate compliance with Building Regulation L1 – Conservation of Fuel & power. Initially, a design stage SAP is undertaken and should be submitted to Building Control for formal approval. Upon completion of the property, an “as built” SAP is required which will need to reflect any changes made during the construction of the dwelling.

Who can undertake SAP assessments

Only SAP assessments carried out by an On Construction Domestic Energy Assessor (OCDEA) using government approved software can be accepted by Building Control. We are accredited to undertake SAP ratings on your behalf and will ensure that your Design SAP is completed within 7 days of receipt of all relevant drawings and specifications. As part of the service, we will advise you of any alterations required to the designs in order that a “pass” is achieved. Our fees include any amount of alterations you may require before and during the build process.

What is an Energy Performance Certificate (EPC)?

EPC’s tell you how energy efficient a home is on a scale of A-G. The most efficient homes generally have lower fuel bills and are in band A. The average property in the UK however falls within bands D – E. The certificate also indicates on a scale of A – G the dwellings impact on the environment. The better the rating, the lesser the impact will be on the environment through Carbon Dioxide (CO2) emissions. The certificate also includes recommendations on ways to improve the homes energy efficiency to help the environment and also to save money for the consumer by decreasing energy bills.

Only fully accredited Energy Assessors can produce EPCs. We have membership with and can produce your EPC through STROMA Accreditation Scheme. The Scheme ensures that the Accredited Energy Assessor produces EPCs in accordance with Government guidelines.

When do I need an EPC?

EPC’s are legally required upon completion of any new dwelling. In order that an EPC may be produced, the dwelling is required to have a full SAP rating undertaken at both the design stage and upon completion.

How long are EPC’s Valid for?

Energy performance certificates are valid for ten years unless the energy status of the property has changed. This could include the provision of an extension or improvements to the energy efficiency of the building such as a replacement boiler.