The energy performance certificate isn't only requested when selling or renting a home: certain renovations that affect the building's thermal envelope can require it to be updated, something many clients don't know when quoting their project.
Renovations that usually affect the rating
Replacing external joinery (windows), improving facade or roof insulation, replacing the heating or cooling system, or work that significantly changes the building's thermal envelope are the actions that most often require the existing energy certificate to be updated.
Who can issue the certificate
The certificate must be issued by a competent technician (architect, engineer or qualified technician), who assesses the home with the corresponding official software and issues a rating from A to G, a service independent of the carrying out of the renovation itself.
Why it can be an opportunity, not just a formality
A well-planned renovation, especially one that improves insulation and joinery, can raise the home's energy rating noticeably, a selling point worth highlighting to the client in the quote, not just presenting as one more mandatory formality.
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