How to get an energy performance certificate in Luxembourg: step-by-step guide
Getting an energy performance certificate (EPC / Energiepass) in Luxembourg takes 4 simple steps: choose an approved expert, gather your documents, host a site visit (30 min to 2 hours), then receive your official certificate — delivered in as little as 24 to 72 hours with the fastest providers. The cost ranges from €430 to €600 excl. VAT for a detached house. This page explains each step, what documents to prepare, what happens during the visit, and the pitfalls to avoid so you get your EPC as quickly as possible.
Need an energy passport? Contact an approved expert
To obtain your EPC in Luxembourg, contact an approved expert listed on the official guichet.public.lu directory. Delivery times and pricing vary by provider.
Learn more about pricing →Who can issue an energy performance certificate in Luxembourg?
In Luxembourg, only two categories of professionals are legally authorised to issue an EPC. This framework is set out in the Grand-Ducal Regulation of 9 June 2021 on the energy performance of buildings, in force since 1 July 2021.
OAI members (automatic authorisation)
Architects and consulting engineers who are members of the Order of Architects and Consulting Engineers (OAI) are automatically authorised to issue energy passports for all types of buildings — residential and functional, new and existing. The OAI has more than 714 member offices in Luxembourg.
Experts approved by the Ministry
Individuals or legal entities approved by the Minister for Energy and Spatial Planning form the second category. This approval is granted for a renewable 5-year period. To obtain it, experts must complete LuxEeB training — specific training on the Grand-Ducal regulations concerning the energy performance of residential and functional buildings. The full list of approved experts is published and regularly updated on guichet.public.lu.
⚠️ Key point
The expert’s approval number (e.g. AP/11083 or LUXEEB.R.00154) must appear in the header of your energy passport. This guarantees the legal validity of the document. Never accept an EPC issued by a professional who is not on the approved list.
Step 1 — Choose and contact your approved expert
You are free to choose the expert of your choice — there is no mandatory assignment. Before contacting an expert, here are the criteria to compare to make the right choice.
Expert selection criteria
1. Current approval status
Check that the expert is listed on the official list published on guichet.public.lu. Approval is renewable every 5 years — an expert whose approval has expired cannot legally issue an EPC.
2. Types of buildings covered
Some approved experts are authorised only for existing residential buildings, others for new buildings, others for functional buildings (tertiary). Ensure the expert is authorised for your situation.
3. Stated delivery time
Delivery times vary from 24 hours to more than a week depending on the provider. If you need to sign a purchase agreement quickly, prioritise an expert who guarantees delivery within 48 to 72 hours after the visit.
4. All-inclusive pricing
Prices are not regulated. For a detached house of less than 250 m², expect to pay between €430 and €600 excl. VAT (€503 to €702 incl. VAT at 17 %). Ask for a written quote including the visit, calculation and certificate issuance.
5. Appointment availability
Check availability for the visit: some providers can offer an appointment within 24 to 48 hours, others have waiting times of 1 to 2 weeks depending on their workload. Appointment booking can be done by phone, email or online depending on the provider.
Step 2 — Prepare your documents before the visit
To facilitate the visit and speed up the process, prepare the following documents in advance. The expert will need them to accurately characterise your building.
Mandatory administrative documents
1. Deed of ownership or rental contract
Required to prove your right of access to the property.
2. Building plans
Architectural plans showing the floor area and room layout, or at least a floor plan (ground floor, upper floors). No plans? The expert can survey them on site during the visit.
3. Year of construction
Note the year the building was constructed or last substantially renovated. This information is usually on the deeds or available from the land registry.
4. Energy bills (heating)
Gather 1 to 2 years’ worth of heating or fuel bills (oil, gas, electricity). They help the expert validate calculations.
Step 3 — The site visit: what happens
The on-site visit is the central step in the process. It takes between 30 minutes and 2 hours depending on the size and complexity of the building. Here’s the complete schedule.
Visit schedule
Step 1: Exterior examination
The expert examines the façade, roof, condition of the covering and visible insulation system from the outside. Takes photos and notes apparent thermal defects.
Step 2: Internal inspection
The expert visits all main rooms, inspects windows, doors, radiators, boiler and heating system. Measures certain surfaces and photographs technical installations.
Step 3: Lofts and basements
The expert accesses the lofts to check insulation, inspects the basement or void to assess floor insulation and moisture presence.
Step 4: Questions and measurements
The expert asks specific questions about previous work, energy consumption and year of installation of systems. Completes measurements and surveys.
Step 4 — Receiving and using your certificate
After the visit, the expert returns to the office to analyse the data, perform calculations using LuxEeB software and issue the official EPC.
Issuance timeline
The timeline varies by expert:
- 24 to 72 hours: fastest providers
- 1 to 2 weeks: average timeline
- More than 2 weeks: providers with heavy workload
Certificate format
The EPC is provided as an official PDF document. It includes:
- The building’s energy class (A++, A+, A, B, C, D, E, F, G)
- Annual energy consumption in kWh/m²
- Building baseline data (area, year, type)
- The expert’s approval number
- Validity date (10 years from date of issue)
EPC validity
The energy passport is valid for 10 years from its issue date. After this period, you must order a new one if you wish to sell or rent your property.
📋 Legal requirement
When selling or renting, the EPC must be provided to the buyer or tenant. This is a legal obligation in Luxembourg since 1 July 2021. Failing to provide a valid EPC can result in a fine of up to €5,000 for the seller or landlord.
Special cases: flat, apartment building, new build
Depending on your type of property, the procedure may have some particularities. Here are the most common cases.
Flat in an apartment building
For a separate flat, the EPC is calculated as for a detached house. The expert assesses your accommodation as a whole.
For entire buildings (collective ownership with multiple flats), a single EPC is issued for the entire building. Owners are then responsible for making this audit available to future buyers or tenants.
New buildings
New buildings (built after 1 July 2021) must have an EPC before first occupation. The builder or property developer is responsible for requesting it. This audit is based on theoretical plans and the expected performance of installations.
Small functional buildings
Small shops, offices or functional buildings of less than 50 m² are exempt from the EPC requirement. For all other functional buildings, the EPC is mandatory.
Timelines and validity of the energy passport
Overall process timeline
From initial request to certificate receipt, allow:
- 1 to 5 days: initial contact and appointment scheduling
- 0.5 to 2 hours: duration of site visit
- 1 to 14 days: time between visit and certificate delivery (depending on expert)
In total, allow 7 to 20 days from request to receipt, unless you choose a highly responsive expert offering 24-72 hour delivery.
Validity: 10 years
Once issued, your EPC is valid for 10 years. After this period, the document has no legal value and you must order a new one to sell or rent your property.
Tips to optimise your energy class
If your EPC shows a poor energy class (D, E, F or G), know that you can improve your performance by carrying out energy renovation work. This work can also entitle you to financial aid.
Main recommended works
- Thermal insulation: lofts, walls, basements (most impactful)
- Window replacement: from single to double glazing
- Heating system upgrade: to a heat pump or condensing gas boiler
- Solar hot water installation: to complement heating
Available financial assistance
In Luxembourg, the KlimaBonus programme offers subsidies for energy renovation work. See our guide on available grants and subsidies and discover how to fund your renovation.
Common mistakes to avoid
Mistake 1: Ordering an EPC from an unapproved expert
Risk: The document will have no legal value. You won’t be able to use it for a sale or rental. Always verify that the expert is listed in the official guichet.public.lu directory.
Mistake 2: Treating the EPC as a « pass »
Reality: The EPC is a performance assessment, not a certificate of acceptability. Even if your home has a class E or F, it remains legally saleable and rentable. The EPC simply informs the buyer or tenant of your energy consumption.
Mistake 3: Forgetting that the EPC is mandatory for sale or rental
Consequence: Selling or renting without a valid EPC may expose you to a fine of up to €5,000. This has been mandatory in Luxembourg since 1 July 2021.
Mistake 4: Using an expired EPC
Problem: An EPC over 10 years old no longer has legal value. You cannot use it for a sale or rental. A new assessment is then required.
Frequently asked questions
Who must order the energy passport: the seller or the buyer?
It is the seller (or landlord) who must order and pay for the EPC. This is a legal obligation since 1 July 2021 in Luxembourg. The buyer or tenant receives a copy before the contract is concluded.
How long does it take to get an energy passport?
The complete process typically takes 7 to 20 days from request to certificate receipt. With a highly responsive expert, you can get it in 24 to 72 hours after the visit.
Can an energy passport be obtained without an on-site visit?
No. For any existing building, the on-site visit is mandatory. It’s the only way for the expert to accurately characterise your property and calculate its energy performance. Purely theoretical calculations from plans are only accepted for new buildings.
Is my energy passport still valid if I have made improvements to my home?
Your existing EPC remains legally valid for 10 years maximum from its issue date. Even if you make improvements, the EPC doesn’t need to be updated unless the classification materially changes or its age exceeds 10 years. If you have undertaken significant energy renovations, a new EPC may help you demonstrate the improved performance to buyers or tenants.
Does the energy passport oblige me to carry out renovation works?
No. The issue of an energy passport and the revelation of a poor energy class impose no legal obligation to carry out works. You can sell or rent your property with a class E, F or G. However, a good energy class can increase the attractiveness and value of your property.
Can I use an energy certificate from another country (Belgium, France, Germany)?
No. The Luxembourg energy passport (EPC) is specific to Luxembourg. Certificates from other countries have a different structure and do not meet Luxembourg’s legal requirements. You must obtain an EPC from an expert approved in Luxembourg.