What does a renovation cost in Luxembourg?

These ranges are orientation figures, not prices you can rely on. They move with the age and condition of the building, access, the specification you choose and each provider's pricing. A complete kitchen remodel with flooring, electrical and plumbing work is a larger project: see the kitchen remodel cost guide. For bathrooms by size and finish, see the bathroom remodel cost guide.

Compare written quotes for the same scope, and compare totals including VAT.

Kitchen: cabinet range, worktop material, appliance level and whether the sink, hob or extractor move. Opening a load-bearing wall turns a kitchen refit into a structural project with an engineer's calculation and, usually, a permit.

Bathroom: whether the layout stays, the extent of tiling, the waterproofing system behind the tiles, the fixtures and whether pipes or drains must be replaced. Ask for the brand and product reference of the waterproofing system on the quote.

Full refit: rewiring, plumbing, moving walls and the condition of what is found once floors and walls are opened. Keep a contingency for hidden defects in older buildings.

Design and coordination: an architect is required for many permit applications (see the regulation guide); a project manager can coordinate several trades. Ask each one for a written fee proposal.

According to the official guidance, renovation work on a dwelling can be invoiced at the 3% super-reduced VAT rate instead of 17% when, among other conditions:

• the dwelling is used as a main residence, by the owner or by a tenant;
• the building was constructed at least 10 years before the start of the works;
• the works are carried out within 2 years of starting.

The total VAT advantage is capped at €50,000 per dwelling. Second homes do not qualify. Not every line qualifies: the official list excludes, for example, furniture including fitted kitchens, bathroom furniture and mirrors, wellness equipment and architect fees.

Two routes:

• Direct application: before the works start, the contractor applies to the Administration de l'enregistrement, des domaines et de la TVA (AED) for an approval, countersigned by the client. Once approved, the contractor invoices at 3%.
• Refund: if no approval was obtained, the contractor invoices at 17% and the owner can ask the AED to refund the difference, subject to minimum amounts set out on the official page.

Example of the effect: on €50,000 of eligible work excluding VAT, VAT is €8,500 at 17% and €1,500 at 3%, a difference of €7,000, provided the dwelling's remaining €50,000 advantage is not used up. Ask the contractor to show the VAT rate on the quote and confirm which route applies.

Insulation and windows. Under the official 2026 scheme, aid for energy renovation of a residential building more than 10 years old (counted from the building permit) is calculated per m² for each renovated element. The sequence is:

1. energy advice by an approved energy advisor;
2. an accord de principe (approval in principle) obtained before the works start;
3. the works;
4. the payment request after the works, within 4 years from 31 December of the year of the invoice.

Renovating a single element without full energy advice is possible under separate conditions; renovating more than one element requires energy advice.

Heat pumps. For technical installations, the official page sets fixed amounts. For an existing single-family house it lists up to €10,000 for an air-to-water heat pump and up to €12,000 for a geothermal one, with higher amounts for orders placed between 1 January 2026 and 30 June 2027 (invoice by 31 December 2028) and lower amounts when no fossil-fuel or direct-electric heating is replaced. Minimum performance and other technical conditions apply. The application is made after installation.

Aid amounts are not guaranteed. Confirm eligibility and the applicable amount on the official pages, or with your energy advisor, before you sign or order. The VAT rate and Klimabonus are separate procedures; check each one.

Luxembourg's Civil Code (articles 1792 and 2270) makes architects and contractors liable for ten years for major works (gros ouvrages) and two years for minor works (menus ouvrages). According to the Chambre des Métiers, these periods run from the reception of the works, which is why a dated, signed reception record listing any reservations is useful.

Court decisions summarised by the Chambre des Métiers have treated, for example, roofs, façades, exterior windows, screeds and plumbing installations as major works, and interior doors or radiators as minor works. The classification depends on the facts of each case.

This liability is a legal obligation of the contractor. It does not by itself prove that an insurer will pay. Ask each contractor which liability insurance it holds and request a current certificate that covers the work on your quote. Fynd does not check contractors' insurance or documents.

• Scope by trade: demolition, structure, plumbing, electrical, tiling, joinery and finishes listed separately, with quantities.
• Materials: brand and product references rather than general descriptions.
• VAT: the rate on each line and whether the 3% approval has been requested or a refund is planned.
• Exclusions: what is not included, such as permits, waste disposal, temporary protection or repairs found after opening walls.
• Establishment authorisation: a copy of the company's autorisation d'établissement for the activity it will carry out, and the same for any subcontractor.
• Insurance: current certificates for the contractor's liability insurance.
• Payment schedule: payments linked to completed stages rather than a large advance, and the final payment after reception.
• Timing: start date, duration and quote validity long enough for any VAT approval, Klimabonus or permit step.

Ask for at least two or three quotes on the same written brief so you compare the same work.