Renovation cost in Luxembourg (2026)

Key swing factors:

• Cabinet range: flat-pack Scandinavian at the bottom, custom German joinery at the top
• Worktop material: laminate at €120/linear metre, engineered stone at €550, natural stone at €900+
• Appliance tier: mass-market at the bottom, integrated induction with downdraft and column fridge at the top

A €15,000 kitchen carries roughly €4,500 to €6,000 of labour across the trades. Variance above that 30–40% ratio signals a premium on the fixtures, not on the craft.

A kitchen that requires load-bearing wall removal crosses into project territory — add the structural opening, an engineer's calculation, a commune permit and the steel beam, and factor decennial liability into the structural contractor's quote.

Timeline:

• Standard refit: 8–12 weeks from deposit to handover
• Load-bearing wall involved: 16 weeks

Bookings tighten in September and January — if the project has to close before year-end, the deposit has to be paid by early June at the latest.

Walk-in showers and heated floors sit in the upper half; a standalone bath-only refit lands at the lower end. Fixtures — the wall-hung toilet, the thermostatic mixer, the vanity unit — carry the widest retail spread in the project. A buyer who substitutes the top-of-catalogue reference for a solid mid-range equivalent can shave €2,000 to €3,000 off a €12,000 bathroom without any visible compromise on the finished product.

What to verify on every bathroom quote:

• Tanking product reference: ask for the brand and product name on the waterproof-membrane line — this is where bad contractors cut corners, and where your decennial claim will be made five years later if it fails
• Decennial certificate: ask who signs the works handover and request the current certificate naming your project scope
• Permit requirements: building permits are not usually required if the footprint does not change and the drain stack stays in place — they become mandatory the moment the intervention affects a shared wall or a common stack in a multi-unit building; coordinate with the syndic before the project starts

Timeline: 4–6 weeks on a standard refit, 8 weeks on a layout-change refit.

The lower end assumes a cosmetic refit on a unit built after 2000. The upper end includes rewiring, plumbing relocation, a new kitchen and bathroom, thermal and acoustic upgrades to shared walls and a change in layout.

VAT saving example: on a €50,000 principal-residence scope, the 3% rate saves €7,000 versus the 17% alternative (€1,500 vs €8,500 in VAT). File via logement.lu before the quote is signed.

A project-manager engagement — a professional who coordinates the trades on your behalf, rather than an architect producing design — is money well spent on any project that touches more than two trades concurrently.

The 3% super-reduced VAT rate on renovation work is the single biggest lever on the invoice, and it is chronically underused because the filing has to happen before the quote is signed.

Eligibility checklist:

• Principal residence occupied by the owner for at least 2 years
• €50,000 lifetime cap per person — a joint-owner couple has access to €100,000 combined
• File via logement.lu BEFORE signing — the claim routes to the Administration de l'Enregistrement et Domaines; pre-approval issues within 6–10 weeks in standard volume periods
• Only work covered by the pre-approval carries the reduced rate — a quote signed before the agreement is issued is not re-rated retroactively; out-of-scope lines are billed at 17%
• Tenants do not qualify
• Second-home or rental-property work does not qualify
• Work on commercial premises does not qualify

The documentation trail matters: keep the pre-approval, the quote with the explicit VAT line and the contractor invoice with the Enregistrement attestation for ten years, in case of inspection.

Technical requirements:

• Inverter compressor mandatory — fixed-speed on/off units do not qualify
• Unit must cover at least 70% of annual heating demand — this rules out retrofits on insufficiently insulated pre-1985 building stock without concurrent fabric upgrades

The sequencing rule — the most common reason claims are refused:

• File your intent on climate.public.lu
• Wait for the written agreement-in-principle to reach the installer
• Only then sign the quote — retroactive claims are refused without exception

On a renovation combining insulation, a new heating system and structural work, Klimabonus and the 3% VAT stack — the two schemes are compatible and can be claimed on the same invoice provided the documentation is complete.

Rooftop solar sits under that same Klimabonus envelope: see what a solar installation costs in Luxembourg and how the 2026 subsidy shortens the payback.

Decennial liability is a ten-year strict-liability cover mandated on any company touching structure, roof, load-bearing elements or building envelope. The premium is already priced into the quote — you do not pay it as a separate line.

When decennial cover is required:

• Any work on load-bearing walls, columns or beams
• Roof replacement or structural roof repair
• Building envelope interventions (external insulation, façade cladding)
• Foundation work or basement waterproofing
• Any modification that affects the structural integrity of the building

What to ask for on every structural quote:

• Current decennial certificate naming your specific project scope — not a generic certificate
• Proof from every subcontractor, not only the general contractor
• Public-liability certificate on every quote, structural or not
• Written workmanship guarantee of at least 2 years on labour

A structural contractor without decennial cover can underbid a compliant competitor by 5 to 10 percent — but a decennial claim after a hidden-defect failure (collapsed lintel, cracked slab, roof leaking three winters after handover) is paid by the insurer of the original contractor, without the owner having to prove fault. Without cover, the owner litigates against a trading entity that may have been dissolved in the interim — the classic way a Luxembourg renovation becomes a five-figure legal bill five years after handover.

File the certificate with your notarial deed and renovation paperwork — ten years is a long window and the original file is easy to misplace.

A compliant Luxembourg renovation quote (mandatory above €2,500 under national consumer-protection rules) must include:

• Each trade itemised on its own sub-quote — a general-contractor lump-sum with only a grand total is not compliant and makes comparison impossible
• Labour hours at a stated hourly rate per trade
• Materials listed line by line with brand and product reference
• Travel or mobilisation fees explicitly stated
• Applicable VAT rate — either 3% logement-aidé per logement.lu agreement, or 17% standard
• Autorisation d'établissement number of the legal operator

Payment staging — what a reasonable schedule looks like:

• 30% at signature (deposit)
• 30% on start of works
• 30% on a defined milestone (first fix or equivalent)
• 10% on handover and reception

A contractor asking for 50% up front on a residential renovation is either under-capitalised or pricing the risk of your default into the deposit — either way, that is a flag.

Documents that must be attached to the quote:

• Decennial liability certificate on structural-work quotes
• Public-liability proof on every quote
• Workmanship guarantee of at least 2 years on labour — stated on the quote, not promised verbally on handover day

Ask for at least 3 quotes on any project above €10,000; 5 quotes on a full refit.