When you think about renovating your home, you probably focus on design, layout or finishes. But there's one key aspect that many homeowners overlook that can have a major impact on the value and efficiency of their property: the Energy Efficiency Certificate (EEC).
What is EWC and why does it matter so much?
EWC is mandatory if you want to sell or rent your homebut it goes far beyond a simple administrative document. It reflects the energy consumption and CO₂ emissions of your property. And the best part: a well-planned refurbishment can significantly improve your rating.
What exactly is the Energy Efficiency Certificate?
It is an official document issued by an accredited certifying technician. It evaluates the property on a scale that goes from the A (very efficient) to the G (very inefficient)according to two key parameters:
- Non-renewable primary energy consumption (kWh/m²/year)
- CO₂ emissions (kgCO₂/m²/year)
The report also includes recommendations to improve efficiency.
When do you need the EWC?
- Whenever you are selling or renting.
- When renovating your home: even if it is not mandatory, you are interested in renewing itbecause it can improve with the actions you take.
How to read your EWC before renovating
Before starting the renovation, check your current certificate:
- Current vs. potential ratinggives you an idea of what you can improve.
- Consumption and emissionsAre they above normal?
Elements that have the greatest impact:
- Thermal insulation in facades and roofs
- Carpentry (windows, glass)
- Air conditioning, DHW and lighting systems
Many times the same certificate includes suggestions for improvement. At Buildpat we help you turn those suggestions into concrete actions.
How can a refurbishment help you improve your EWC?
A well-targeted renovation can raise your energy bill. Some key interventions:
- Windows with thermal breaks and double glazing
- Exterior insulation (SATE)
- Aerothermal instead of conventional boiler
- LED lighting and A++ or better appliances
Advantages of improving energy efficiency
- Increases the market value of your property
- Reduce consumption and bills energy
- Improved thermal and acoustic comfort
- Facilitates the sale or leaseespecially in areas such as Barcelona
- You can open the door to public subsidiessuch as Next Generation
After the reform: new EWC
Once the renovation has been completed, you should apply for a new updated certificate. At Buildpat we work with qualified technicians to issue it.
Conclusion
The EPC is not just a legal requirement: it is a strategic tool for planning your renovation. If you use it well, it can help you make informed decisions, increase the value of your property and enjoy a more efficient, comfortable and sustainable home.
At Buildpat we accompany you throughout the entire process: design, execution, technical management and updating of the energy certificate after the renovation.
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