From 1st July 2013, it’s mandatory to have an energy certificate in order to rent or sell housings!
It has been approved and published on the Royal Decree 232/2013 about energy certification.
The certificate must include objective information about the energy characteristics of buildings, and in existing buildings, recommendations to improve the effective levels of energy efficiency.
The energy categories goes from “A” (most efficient) to “G” (least efficient) and it’s valid for a period of 10 years.
RSC arquitectura is already underway, are you?