CPE or passeport énergétique, what's the point?

CPE - Energy Performance Certificate Luxembourg

All property transactions in Luxembourg require the production of an Energy Performance Certificate (Certificat de Performance Energétique). The CPE or passeport énergétique attests to the energy quality of a property.
When selling or renting a property, the owner must provide the buyer with an energy passport proving its energy performance.

CPE calculates a building's energy performance

The Certificat de Performance Énergétique is more commonly known as an energy passport.

The EPC defines the energy consumption of a building or home. It is drawn up on several pages, according to very precise standards. The EPC defines 3 main elements:

  • energy performance class. It determines the primary energy consumption of the dwelling.
  • thermal insulation class. It corresponds to the home's heating requirement index.
  • Energy performance class. It defines the building's CO2 emissions.

Each classification is graded from A to I.

Grade A is the highest class. It corresponds to passive houses. Class B is for low-energy homes. Class C corresponds to energy-efficient homes. Class I is the lowest class.

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When is the CPE mandatory in Luxembourg?

The Energy Performance Certificate has been mandatory since the Grand-Ducal regulation of November 30, 2007. The CPE is valid for 10 years. It is passed on from owner to owner.

Mandatory EPC for the sale or rental of older buildings

The CPE is required when selling, converting, extending or building a home. Even when renting, landlords must provide their tenants with an Energy Performance Certificate. 

However, if you're renovating or upgrading a building, it's advisable to obtain a new passeport énergétique. This is because the energy performance of the building will be affected by the work carried out. A new EPC will be very useful in the event of resale of the property. The value of your property depends on it.

AAA energy passport for new buildings in Luxembourg

Since 2017, all new buildings in Luxembourg have had to meet an AAA rating on all three energy consumption calculation elements.

EPC and property renovation in Luxembourg

In Luxembourg, the CPE is for information purposes only. Whatever the calculated energy performance of a building, there is no obligation to renovate the property to improve its energy performance.

Nevertheless, the Luxembourg government provides financial assistance for home renovation . These are specifically aimed at improving the energy performance of buildings.

Obtaining an energy passport in Luxembourg

The passeport énergétique is mandatory when selling or renting a property. The owner must be able to provide it. The Energy Performance Certificate must be issued by professionals certified by the Luxembourg government.

Even if you can evaluate the performance of your home using tools available on the web, these cannot be the official documents required for real estate transactions. However, these evaluations cannot constitute the official documents required for real estate transactions.

You'll find a list of approved professionals on guichet.lu who can draw up an Energy Performance Certificate for your home.

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Energy performance and rent setting in Luxembourg

In 2022, the government has drawn up a bill to correlate rents with the energy performance of housing. The aim is to combat "thermal flaws". This law is still pending.

In practice, under this energy performance law, rents would be capped according to the property's classification. This ceiling would also be correlated to the investment made by the landlord. In concrete terms, the tenant's rent would be capped at :

  • 3.5% maximum of the capital invested by the owner in homes with an EPC rating of A to E
  • 3.0% maximum of the capital invested by the owner in low-energy-performance homes (F to I rating)

As a reminder, the maximum rental amount is currently 5% of the capital invested. There is currently no notion of energy performance.

In addition, under this law, the amount of capital invested should also be indicated in the lease. Find out more about renting in Luxembourg.

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