29 September, 2025 · Blog
Obtaining an energy certificate ensures your home meets current legal regulations. This document is essential if you want to rent or sell. Here we explain what it is, how to obtain it step by step, and how long its validity lasts so you can act confidently.
Energy certificate. What is it?
The energy certificate is an official document that evaluates a property’s energy consumption and CO₂ emissions. Since 2013 it has been mandatory in Spain to sell or rent homes. Its purpose includes transparency and efficiency.
It also offers recommendations to reduce consumption and improve thermal comfort. This can mean financial savings and increased market value.
How to obtain the energy certificate
The first step for how to obtain the energy certificate is to hire an accredited technician (architect, engineer or similar certification).
Then, this professional will visit the property to take data: surface area, orientation, thermal envelope, windows, etc. With this data the technician calculates the energy rating, writes the report and prepares the energy label. It must be registered with the regional authority.
There is also a fee to register the certificate. The average time is between a few days and a week, depending on administrative load.
Energy certificate validity
Once issued, the energy certificate has a validity of 10 years. However, if the home receives a G rating, the lowest, its validity is reduced to 5 years.
It must also be renewed if energy improvements or major renovations change the inspected elements.
Key points to get the energy certificate
How to obtain the energy certificate involves hiring a technician, allowing the visit for measurements, and registering the certificate with the corresponding administration. This document is mandatory if you rent or sell and offers benefits: savings, comfort and better energy performance.
Remember that the energy certificate validity is 10 years, except for low ratings (G), which last 5. If you are thinking of renovation or improving your home, obtaining this certificate is a smart investment. Evaluate ideas, consult professionals, and ensure your apartment meets energy efficiency standards.