Commercial premises renovation in Luxembourg: works, grants and procedures 2026
Cutting energy costs, improving staff comfort, adding building value and anticipating performance obligations: renovating your business premises is a strategic investment. Unlike private individuals, a business does not use the Klimabonus but a set of dedicated schemes: SME Packages Sustainability (70%, up to €17,500), the environmental protection aid regime, the general SME regime and the 18% investment tax credit. This guide covers priority works, grants, the tertiary energy passport, recoverable VAT and procedures.
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Cut high energy costs
Heating, lighting, cooling and process account for a large share of operating costs. A well-run energy renovation cuts these durably, with a direct impact on your margin.
Anticipate performance obligations (EPBD)
The EU directive requires renovating the worst-performing 16% of non-residential buildings by 2030, then 26% by 2033. Acting now avoids being forced under pressure and secures your asset value.
Improve comfort and appeal
Comfortable, bright, well-tempered premises improve productivity, reduce absenteeism and strengthen your employer brand and customer image.
Add real-estate value
A high-performance building with a good energy passport rents and sells better. Renovation is a property investment as much as an energy one.
Business premises renovation uses business aid, not the residential Klimabonus. For technical aspects by work type, our energy renovation guide remains a useful reference.
Priority works
An effective project follows a logic: tackle the envelope and highest-return items first, then equipment. Here are the levers for a tertiary building.
| Works | Benefit | Priority |
|---|---|---|
| Envelope insulation (roof, walls, dock doors) | Lower losses, comfort | High |
| LED lighting + detection | Very fast ROI, immediate savings | High |
| Heat pump (fossil replacement) | Decarbonisation, − 50 to 75% heating bill | High |
| Dual-flow ventilation | Air quality, heat recovery | Medium |
| High-performance windows/glazing | Comfort, lower losses | Medium |
| Control / BMS | Smart control, savings without heavy works | Medium |
| Solar PV | On-site production, independence | Roof-dependent |
Depending on your activity, other solutions complement the project: business air conditioning and business EV charging.
An energy audit identifies the highest-return items for your building and activity. It’s the recommended first step — it avoids investing in the wrong order and conditions access to some grants.
Grants and financing for businesses
| Scheme | Rate | For which projects |
|---|---|---|
| SME Packages – Sustainability | 70% · max €17,500 | Efficiency project €3,000–€25,000 excl. VAT |
| Environmental protection regime | Efficiency: 15–25% Renewable: up to 65% | Efficiency works and renewable energy (by size) |
| General SME investment aid regime | Small 20% · Medium 10% | Larger productive investments |
| Investment tax credit | 18% | Tax credit on ecological/energy-transition assets |
Sources: Guichet.lu (SME Packages), environmental regime (renewed by the law of 8 December 2025), general SME regime and art. 152bis LIR. Indicative rates by company size and EU framework.
For an efficiency project under €25,000 excl. VAT (audit + lighting + control), SME Packages covers 70% simply. For larger works, the environmental regime or general SME regime take over. The full SME Packages procedure is on our SME grants page. Mind the de minimis rule: total public aid is capped at €300,000 over three rolling fiscal years.
The 3% super-reduced rate is for dwellings. Your business premises are invoiced at 17%, but your VAT-registered business recovers that VAT. Always think in amounts excl. VAT.
Energy passport for functional buildings
The energy passport (energy performance certificate) for functional — i.e. non-residential — buildings is a key document in business renovation. Our energy passport guide explains the method and how to read the classes.
| Point | Rule |
|---|---|
| Mandatory on | Construction, extension, substantial transformation, sale, change of owner or tenant |
| Exemption | If less than 10% of the envelope surface is affected, OR if technical works cost under €3,000 |
| Validity | 10 years |
Source: Guichet.lu — Energy passport for functional buildings.
Beyond the obligation, the energy passport ranks your building’s weaknesses and guides the highest-return works. It also documents expected gains, useful for an aid application.
Authorisations and permits
Building permit or works declaration
Any construction, transformation or demolition generally requires a building permit from your commune’s mayor. Minor works not affecting structure, façade or use may fall under a simple works declaration or be exempt. Rules vary by commune (PAG, building regulation).
Classified establishments (commodo/incommodo)
Some technical installations (cold production, boiler room, process) may fall under classified-establishment law by power. Verify at the study stage.
Co-ownership and commercial lease
As a tenant, landlord consent may be needed by work type. In co-ownership, some works on common areas require an assembly decision.
Thresholds and requirements depend on the commune, building type and works. Your renovation firm, architect and commune confirm the applicable procedures.
Your project step by step
Audit and energy passport
Establish an audit and, if required, the energy passport to identify and prioritise works.
Prioritisation and quotes
Compare several quotes for the chosen works. Support from an advisor (House of Sustainability, Luxinnovation) helps scope the project and aid.
Apply for aid BEFORE works
File the aid application (SME Packages, environmental or SME regime) and wait for approval before starting.
Authorisations
Obtain the building permit or file the works declaration with the commune.
Execution
Have the works carried out by qualified firms. Keep all invoices and proofs.
Handover and payout
Accept the works, pay invoices and submit proofs for aid payout.
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Mistakes to avoid
Relying on the Klimabonus
The Klimabonus is residential. Your business premises use other regimes (SME Packages, environmental, SME).
Starting works before aid approval
The application must precede the start — the main cause of losing aid.
Renovating without audit or prioritisation
Investing in the wrong order (equipment before envelope) reduces overall return. Start with an audit.
Forgetting the energy passport and permits
Some works trigger the passport obligation and a permit. Verify upfront to avoid blockers.
Exceeding the de minimis cap unknowingly
Total public aid is capped at €300,000 over three years. Declare any aid already received.
FAQ
What grants for renovating business premises?
A business doesn’t use the Klimabonus. It uses SME Packages Sustainability (70%, max €17,500), the environmental protection regime (efficiency and renewable, by size), the general SME regime (20% small / 10% medium) and the 18% investment tax credit.
Does the 3% VAT apply to commercial premises?
No. The 3% rate is for dwellings. Commercial premises are invoiced at 17%, recovered by the VAT-registered business. VAT is neutral.
Is an energy passport mandatory for a business building?
Yes, on construction, extension, substantial transformation, sale or change of owner or tenant. Exemption if under 10% of the envelope is affected or technical works cost under €3,000. Valid 10 years.
Is a permit needed to renovate business premises?
It depends on the works and commune. A building permit is generally required for any construction, transformation or demolition; minor works may fall under a simple declaration. Rules are communal.
Where to start a business energy renovation?
With an energy audit identifying the highest-return items. Then prioritise the envelope (insulation), LED lighting and heating (heat pump), before complementary equipment.
Can a tenant renovate and get aid?
Yes, business aid funds investments made for the activity, whether owner or tenant. Landlord consent may be needed by work type.