Energy Certificate (CPE): Major Impact on Sale in 2026

The Energy Performance Certificate (CPE) is no longer just an administrative document. In 2026, it directly influences the sale price and attractiveness of your property. Here is everything you need to know.

Reminder: What is the CPE?

The CPE classifies your property according to two criteria:

• Energy class (A to I): Primary energy consumption
• Insulation class (A to I): Building envelope performance

This certificate is mandatory for any sale or rental in Luxembourg.

CPE Impact on Prices (2026)

Price differences by energy class are significant:

• Class A/B: Reference price (+5-10% vs average)
• Class C/D: Market price (reference)
• Class E: -5 to -10% compared to D
• Class F: -10 to -15%
• Class G/H/I: -15 to -25% (or more)

Why This Growing Impact?

1. Energy costs: Buyers anticipate their bills
2. Credit access: Some banks integrate CPE into their criteria
3. Regulations: Increasingly strict standards coming
4. Renovation aids: Work budget to plan
5. Ecological awareness: Important criterion for young buyers

Should You Improve the CPE Before Selling?

The answer depends on several factors:

Yes, if:

• Your property is class F or worse
• Simple improvements are possible (heating, windows)
• Return on investment is positive
• You have time before the sale

No, if:

• Your property is already class C or better
• Work is too expensive vs expected added value
• You need to sell quickly
• Buyer prefers to renovate themselves

Profitable Improvements

Investments with good returns:

• Boiler replacement: Switch to condensing or heat pump
• Double/triple glazing windows: Notable improvement
• Roof insulation: Often the best cost/benefit ratio
• Smart thermostats: Small investment, visible impact

How to Present a Poor CPE?

If your property has a poor class:

1. Be transparent from the listing
2. Highlight potential after work
3. Provide renovation quotes
4. Mention available aids for the buyer
5. Adjust price accordingly

Sellect.lu Tip

Before any decision, have your property valued by several agencies with its current CPE AND its potential CPE after work. This comparison will help you decide if the investment is worthwhile.