Facade Renovation Luxembourg 2026 : Prices, EWI and Klimabonus
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Facade Renovation in Luxembourg: an Essential Investment
Your home's facade is your first line of defence against the elements. In Luxembourg, climatic conditions — rain, frost, temperature swings — put facades under constant stress. Regular renovation (every 15 to 20 years) is essential to maintain the waterproofing and aesthetics of your property.
Beyond aesthetics, a facade renovation is an opportunity to improve external wall insulation (EWI), which opens eligibility for Klimabonus Wunnen 2026 grants and significantly improves the CPE energy class of your home.
Facade Renovation Prices in Luxembourg 2026
| Type of work | Price per m² (excl. VAT) | Details |
|---|---|---|
| Basic cleaning | €15–30 | High-pressure wash, anti-moss treatment |
| Painted render | €35–60 | Preparation + 2 coats mineral paint |
| Render/roughcast | €50–90 | Strip old render + new mineral render |
| EWI + render | €120–200 | EPS/mineral wool insulation + finish coat |
| Timber/composite cladding | €150–250 | Insulation + breather membrane + ventilated cladding |
For a detached house with 120 to 150 m² of facade area, the total budget is between €6,000 (simple renovation) and €30,000 (full EWI with cladding).
Klimabonus Wunnen 2026 for External Wall Insulation (EWI)
Since 4 January 2026, Klimabonus Wunnen has replaced PRIMe House, managed by the AEV via MyGuichet.lu. Grant amounts:
| Insulation type | Klimabonus 2026 |
|---|---|
| EWI — standard materials | €60/m² |
| EWI — certified ecological materials | €115/m² (incl. +€55/m² eco-bonus) |
| Enoprimes (Creos/Enovos) additional | +€10–15/m² |
| Maximum cumulative (eco + Enoprimes) | Up to €127/m² |
| Reduced VAT | 3% instead of 17% |
Requirements: R ≥ 3.7 m²K/W, building older than 10 years, prior approval via MyGuichet.lu mandatory before work begins. Contractor must be registered with the Luxembourg Chamber of Skilled Trades.
External Wall Insulation: the Best Value
EWI is the most effective solution for reducing heat loss through walls (up to 25 % of total losses):
- Performance: eliminates thermal bridges, walls continuously heated from outside
- Comfort: more stable indoor temperature, summer and winter
- Floor space: no loss of habitable area, unlike internal insulation
- CPE: significant improvement in energy class (often 1 to 2 classes)
Permits and Regulations
In Luxembourg, facade renovation may require a municipal authorisation, especially if:
- The building is in a protected area or historic zone
- EWI changes the facade thickness (encroaches on public space)
- The colour or materials change significantly
Check with your local authority (Luxembourg City, Esch-sur-Alzette, Differdange, etc.) before starting work.
Get Free Quotes from Approved Contractors
Compare prices from several facade contractors and insulation companies in Luxembourg. Receive up to 5 free and no-obligation quotes for your facade renovation or EWI project.
Frequently asked questions
Expect €35–60/m² for a painted render, €50–90/m² for roughcast, and €120–200/m² for full EWI with render. For a house with 120–150 m² of facade, budget €6,000–30,000.
Klimabonus Wunnen 2026 offers €60/m² for standard EWI and €115/m² for ecological materials. Combined with Enoprimes, up to €127/m² is achievable. Requirement: R ≥ 3.7 m²K/W, prior approval via MyGuichet.lu.
A municipal authorisation may be required, especially in protected areas, when facade thickness changes (EWI) or when materials/colours change significantly. Check with your local authority.
EWI is generally preferred as it eliminates thermal bridges, does not reduce habitable floor space and protects the walls. It is more expensive but offers better return on investment and a stronger CPE improvement.
Data verified in April 2026
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