The energy certificate for renovations on the Costa Blanca: what should you look out for?
- 5 March 2026
- Posted by: Daangroen.com
- Category: Renovation
Anyone renovating a home on the Costa Blanca will sooner or later encounter the energy certificate, also known as the Certificado de Eficiencia Energética. This certificate is mandatory in Spain for sales and rentals, but it is also playing an increasingly important role in renovations. It provides insight into how energy-efficient a home is and what improvements are possible.
An energy certificate is drawn up by a recognized specialist who assesses the property based on various factors, such as insulation, installations, and energy consumption. The property is subsequently assigned a label ranging from A (very energy-efficient) to G (very inefficient). Older homes on the Costa Blanca often have lower scores, simply because they were built at a time when energy performance was less important.
Why is it important during renovation?
When renovating a home, it is wise to view the energy certificate not only as a mandatory document, but as a guideline. The report contains recommendations to improve energy performance. Examples include installing double glazing, insulating walls and roofs, or replacing old air conditioning and heating systems with energy-efficient alternatives.
By incorporating these recommendations into your renovation plans, you can not only improve your energy label but also increase your living comfort and lower your energy costs. Moreover, a better energy label can significantly increase the value of your home, which is beneficial in the event of a potential sale.
What specifically should you pay attention to?
An important point of attention is insulation. Many Spanish homes are designed to stay cool in the summer but lose heat in the winter. Improving roof and wall insulation therefore has a major impact on the energy label. Windows also play a crucial role: replacing single glazing with double or even triple glazing makes a noticeable difference.
Additionally, it is wise to look at installations. Modern systems such as heat pumps, solar panels, and energy-efficient air conditioning contribute to a better score. However, ensure that all modifications are correctly registered so that they are included in a new energy certificate.
In conclusion
The energy certificate is more than an administrative obligation; it is a valuable tool when renovating a home on the Costa Blanca. By consciously investing in energy-efficient solutions, you create a comfortable home that is ready for the future and more attractive on the real estate market.