How long does a new build SAP certificate last before RdSAP takes over?
An on construction SAP EPC usually lasts ten years. Only once it expires does [...]
Which EPC do mortgage lenders and buyers actually see?
Once your on construction SAP certificate expires, the RdSAP based EPC becomes the certificate [...]
Can I get my RdSAP EPC rating corrected to reflect the original SAP figures?
Partly, yes. If you can supply your assessor with a genuine air pressure test [...]
Does a lower RdSAP score mean my new build is less energy efficient than promised?
Not usually. The building itself has not changed. RdSAP cannot verify hidden specification details [...]
Why does my finished new build EPC score lower than the on construction SAP certificate?
Design stage SAP calculates ratings from the exact build specification and a tested air [...]
