Energy audit in Luxembourg: What's New in 2026
At a glance
- New mandatory digital energy audits for properties over 10 years old starting 2026
- PRIMe House subsidies increased to cover up to 60% of audit costs
- TVA reduced to 3% super-réduit for all renovation works on homes older than 2 years
- Integration of CNPD-approved data privacy protocols in audit reporting
- Streamlined applications via Guichet.lu with faster approval timelines
Key information
| Average Energy Audit Cost 2026 | €850 - €1,800 |
| PRIMe House Maximum Subsidy | €4,500 |
| TVA Rate for Renovations | 3% super-réduit |
| Minimum Property Age for 3% TVA | Over 2 years |
| Audit Validity Period | 5 years |
| Number of Certified Auditors | Over 180 |
| Expected Energy Savings Post-Audit | 25-40% |
| Application Processing Time via Guichet.lu | 15 working days |
« The 2026 updates to energy audits will help Luxembourg meet its climate targets while making renovations more accessible through enhanced PRIMe House support. »
« Homeowners can now benefit from simplified procedures on Guichet.lu combined with the 3% TVA rate, significantly reducing overall renovation expenses. »
Introduction to Energy Audits in Luxembourg
In 2026, energy audits in Luxembourg undergo significant updates to align with national climate goals and EU directives. These assessments help homeowners identify energy inefficiencies and qualify for financial support under the PRIMe House programme.
Key Regulatory Changes for 2026
From January 2026, properties older than 10 years require a digital energy audit before major renovations. This ensures compliance and maximises energy savings. The government has expanded the network of certified auditors to over 180 professionals.
- Digital reporting tools mandatory for all audits
- Integration with national building registry
- Real-time data sharing with myenergy.lu
Enhanced Subsidies via PRIMe House
The PRIMe House scheme now offers up to €4,500 in grants for energy audits, covering as much as 60% of costs. This represents a substantial increase from previous years to encourage wider adoption.
TVA at 3% Super-Réduit for Renovations
Renovation works on logements older than 2 years qualify for the reduced TVA rate of 3%. This applies to materials and labour related to energy efficiency improvements identified in the audit.
| Aspect | Pre-2026 | 2026 Update |
|---|---|---|
| Audit Cost Coverage | 40% | 60% |
| TVA Rate | 6% | 3% |
Privacy and Data Protection Measures
All audit reports must comply with CNPD guidelines to protect homeowner data. Personal information collected during audits is anonymised where possible before submission to official platforms.
Administrative Procedures via Guichet.lu
Applications for subsidies and audit bookings are now fully digital on Guichet.lu. Processing times have been reduced to 15 working days on average.
- Online submission of audit reports
- Direct linkage to PRIMe House funding
- Status tracking for all applications
Benefits and Expected Outcomes
Homeowners can expect average energy savings of 25-40% after implementing audit recommendations. The combination of lower TVA and higher subsidies makes 2026 an ideal time for renovations.
Future Outlook for Energy Efficiency
Looking ahead, Luxembourg aims to make energy audits a standard requirement for property sales by 2028, further embedding sustainability into the real estate market.
Frequently asked questions
Under PRIMe House, homeowners can receive up to €4,500 covering 60% of the audit costs.
Yes, if your logement is more than 2 years old and the works follow recommendations from a certified energy audit.
Submit your application directly through Guichet.lu with your audit report attached for quick processing.
Yes, all reports must follow CNPD regulations to ensure personal data protection during sharing with myenergy.lu.
Energy audits remain valid for 5 years from the date of completion under the 2026 regulations.
Sources
External sources
Data verified in April 2026
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