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Directive 2002/91/EC of the European Parliament and of the Council of December 16, 2002, on the energy performance of buildings, establishes the obligation to make available to buyers or users of buildings, an efficiency certificate energy. This Directive has been transposed into the Spanish legal order by Royal Decree 47/2007, of January 19, which approves the Basic Procedure for the certification of the energy efficiency of newly constructed buildings. This Royal Decree came into force on April 31, 2007, and after a period of 6 months of voluntary application, it will be mandatory as of October 31, 2007.

Royal Decree 47/2007 applies to all newly built residential buildings. It is also applicable to modifications, reforms or renovations of existing buildings, which have a useful surface area greater than 1000 m2, and in which more than 25% of the total surface area is reformed. Starting next October 31, 2007, the building or dwelling works projects that request the building license will have to justify compliance with this Royal Decree, and to obtain the license they must present the energy certification in the project phase. This will result in the buyers or users of these buildings being able to have an energy efficiency certificate for their new home.

Engineering Enginytech carries out the energy efficiency evaluation in the project phase, both isolated houses and residential buildings, so that the developer can offer prospective buyers the corresponding certified energy efficiency of their home. This certificate will be specific to each of the homes and, through the so-called efficiency label, an “Energy Efficiency Class” will be assigned, which will vary from class A, which will be awarded to those energy-efficient homes, up to class G , which will identify those least efficient homes.