Certify. This certificate has also been concentrated in the sector of the sale of flats, which has led banks and real estate companies to create a price war for a "low cost" certification of rapid execution and processing against deficient certificates, where the qualified technician to ensure that the application does not breach the rating of the properties. The modifications included in this new royal decree i indicate below the main general changes that directly affect, in the preparation of energy efficiency certification, the criteria that i have previously described as
needs for which it was essential to issue this new royal decree. Extension of mandatory certification the approval of this royal decree expands the e commerce photo editing number of buildings required to have an energy efficiency certification. In this way, those constructions with a total useful area of more than 500 m2 and intended for administrative, health, commercial, public residential, educational, cultural, recreational, logistics, hospitality or sports use must have their energy efficiency certificate. The same applies to buildings occupied by a public administration with a total useful area of more than 250 m2, regardless of the frequency and influx of public therein. In turn, those properties that must pass the technical building inspection (ite) and energy renovations in the coming years will also be
required to have this energy efficiency certification. Update and improvement of procedures the application of the royal decree regulates the face-to-face visits of the competent technicians who will carry out at least one visit to the property, with a maximum notice of three months before the issuance of the certificate. This visit will allow the collection of data, tests and verifications necessary for the correct realization of the energy efficiency certificate. Deadline