20 Mar Master the Energy Certificate: What You Need to Know Before Buying
The energy efficiency certificate is a document that provides information about the energy performance of a property. Since 2007, this certificate has been mandatory in Spain for new constructions, and in 2013, it was extended to the sale and rental of existing buildings. This document is essential, as it allows users to know the energy rating of a home or commercial space before purchasing or renting it. The current regulation, RD 390/2021, establishes the requirements and procedures for its issuance, as part of European regulations aimed at improving the energy efficiency of buildings. At Barcelona Flat Hunter, we explain everything you need to know about this certificate before buying.
This certificate is crucial not only for energy consumption but also in the context of building decarbonization. By 2050, all buildings are expected to be zero-emission, and intermediate goals have been established for property owners to meet. The energy efficiency certificate plays a key role in achieving these targets. The rating ranges from G (least efficient) to A (most efficient), and energy consumption is assessed based on the construction characteristics of the property and its thermal installations.
Consumers have the right to know the energy rating of any property they are considering purchasing or renting, and this information must be provided by the owner through a registered and valid certificate. This document is also essential for accessing public subsidies for energy rehabilitation, tax deductions, and property tax (IBI) discounts, depending on the improvement in energy efficiency achieved through renovations.
The cost of the energy efficiency certificate varies, as there are no official rates. However, low prices have impacted the quality of the certificates. In 2026, a model review is expected, which will include new parameters and tools such as the “renovation passport,” posing a challenge for professionals in the sector.
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