The energy certificate has gone from being a minor bureaucratic formality to a significant factor in a property's value. The European Energy Performance of Buildings Directive (EPBD) requires the efficiency of the housing stock to be raised progressively.
The rating scale
It runs from A (most efficient) to G (least efficient). In Spain, 80% of the housing stock is rated E, F or G. An A-rated home can use 5-10 times less energy than a G, which in 2026 can mean a difference of €100-300/month in bills.
When it is compulsory
To sell or let any property. Without it, fines of €300-6,000 can be imposed. The notary requires the energy rating to be stated in order to complete the deed.
How much it costs
Between €80 and €200 for a 60-100 m² flat, issued by a qualified technician. It is valid for 10 years.
The impact on the property's value
The European directive (Directive (EU) 2024/1275) doesn't ban letting or selling F- or G-rated homes, but it requires each country to reduce the average primary energy consumption of its residential stock by at least 16% by 2030 compared with 2020, and more than half of that reduction has to come from renovating the least efficient homes. Spain has not yet fully transposed the directive, but the trend is clear: low-efficiency properties will face a growing penalty in price and demand. Investing in energy upgrades may be justified to protect the asset's value.
Check the rating before you buy: RadarPro includes energy efficiency information in its database. Also read the complete due diligence guide.
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