3% VAT
How do you build a house in Luxembourg in 2026: steps, budget and timeline?
Building a house in Luxembourg costs €2,500 to €4,000/m² excluding land and VAT, i.e. €375,000 to €600,000 for 150 m², with the plot on top. Allow 18 to 24 months from project launch to moving in, 12 to 18 months for a timber frame. The route: a buildable plot, an architect, the mayor’s building permit, contracts, the works, hand-over.
- Construction cost: €2,500 to €4,000/m² excluding land and VAT (market range), i.e. €375,000 to €600,000 for 150 m²
- Turnkey house: €2,500 to €3,800/m² of living space excluding land and VAT, about €375,000 to €570,000 for 150 m²
- Total duration: 18 to 24 months in masonry, 12 to 18 months in timber frame
- 3% VAT instead of 17% on building your main residence: benefit capped at €50,000, architect fees excluded
- Bëllegen Akt: €40,000 tax credit per buyer on registration duties (the rise to €45,000 is only announced)
- Building permit: issued by the mayor, valid 2 years and extendable once by 1 year; no answer after 3 months counts as a refusal
- Heating: air-to-water heat pump grant of €3,000 in a new build; a fossil boiler can no longer meet the requirements since 2023
The 7 steps to building a house in Luxembourg
Building a house always follows the same order: budget and financing, plot, design, building permit, contracts, works, hand-over. The mayor’s permit must be in hand before the first spade goes in.
| Step | What to do | Indicative duration |
|---|---|---|
| 1. Budget | Price the build, the plot and the extra costs; have your borrowing capacity confirmed by the bank | A few weeks |
| 2. Plot | Check the PAG zone, the PAP, utility connections and the soil before signing the sale agreement | Highly variable |
| 3. Design | Drawings, soil survey, energy performance calculation, detailed estimate | 3 to 6 months |
| 4. Building permit | File with the municipality, mayor’s decision, public display | No statutory deadline; implied refusal after 3 months without an answer |
| 5. Contracts | Compare quotes, sign, have the company file the 3% VAT approval before the works | 1 to 2 months |
| 6. Works | Shell, fit-out, finishes | 10 to 14 months after the permit |
| 7. Hand-over | Hand-over report, « as built » energy certificate sent to the mayor within 2 months, warranties start | The day you get the keys |
The phase-by-phase schedule, the causes of delay and penalty clauses are covered in our guide to construction timelines in Luxembourg; the warranties that start at hand-over, in construction warranties.
What budget do you need to build a house in Luxembourg?
Excluding land, a 150 m² house costs €375,000 to €600,000 excluding VAT to build (€2,500 to €4,000/m²), plus the architect, utility connections and VAT; the plot can then double the total budget depending on the municipality.
| Item (excluding land) | Range | Good to know |
|---|---|---|
| Construction (shell, fit-out, finishes) | €2,500 – 4,000/m² excl. VAT | Mid-range: about €3,000/m² |
| Architect | 8 – 15% of the construction cost | Fees always invoiced at 17% VAT |
| Utility connections | €6,000 – 15,000 | Water, electricity, sewerage |
| Outdoor works | 5 – 10% of the budget | Not at 3% VAT, except direct access to the home |
| VAT | 3% instead of 17% | Benefit capped at €50,000, i.e. about €357,000 of works excluding VAT |
Worked example. 150 m² mid-range house at €3,000/m²: €450,000 excluding VAT. At 17%, VAT would be €76,500; the 3% rate would bring it down to €13,500, but the benefit is capped at €50,000, so you pay €26,500 of VAT. Architect at 10%: €45,000 plus €7,650 of VAT. Utility connections: €10,000. Air-to-water heat pump: €3,000 of Klimabonus. Total excluding land: about €536,000.
The item-by-item breakdown, regional differences and the STATEC index are in our guide to new-build house costs in Luxembourg. The construction price index rose 2.6% year on year (April 2026, STATEC): an unsigned budget goes up by that much every year.
Finding a buildable plot: the checks before you buy
A plot is only buildable if the municipality’s general development plan (PAG) zones it for building; the detailed development plan (PAP) and the building regulations then set what you can build on it.
- PAG zone: look the plot up on geoportail.lu; land in a green zone cannot take a house.
- PAP: « existing neighbourhood » or « new neighbourhood », it sets the footprint, height and sometimes the roof shape.
- Utility connections: an unserviced plot adds €6,000 to €15,000 of networks.
- Soil: a soil survey determines the foundations, an item that overruns on sloping or clay plots.
Prices by municipality, purchase costs and sale-agreement pitfalls: see our guide to finding and buying a building plot.
Build, buy new or renovate: which to choose?
Building costs €2,500 to €4,000/m² plus the plot, whereas a new-build flat sold for €9,809/m² on average and an existing flat for €7,795/m² in the second quarter of 2026 (Observatoire de l’Habitat); an older home often needs an energy renovation, which receives more grants than a new build.
| Build | Buy new | Buy existing and renovate | |
|---|---|---|---|
| Price | €2,500 – 4,000/m² + plot | €9,809/m² on average (flat) | €7,795/m² on average (flat) + works |
| Time before moving in | 18 – 24 months (12 – 18 in timber) | Depends on the developer’s progress | Depends on the scope of works |
| 3% VAT | Yes, no age condition (creation) | Check with the notary | Yes if the home is at least 10 years old |
| Energy grants | Heat pump: €3,000 | — | Renovation Klimabonus: up to €12,000 for an air-to-water heat pump ordered before 30 June 2027, flat rates per m² for insulation |
| Customisation | Complete | Limited to options | Constrained by the existing building |
If you already own a building in poor condition, the middle way is to demolish and rebuild; if the house is sound but too small, an extension costs €1,300 to €3,000/m² depending on the system.
Masonry, timber frame or contemporary house: what the building system changes
A timber frame costs €2,600 to €4,200/m², 5 to 10% more than masonry, but shortens the project: 12 to 18 months in total against 18 to 24 months for a masonry house.
| Masonry (concrete block, brick) | Timber frame | Contemporary (flat roof, large glazing) | |
|---|---|---|---|
| Price excluding land | €2,500 – 4,000/m² | €2,600 – 4,200/m² | Top of the range depending on the structure |
| Total project duration | 18 – 24 months | 12 – 18 months | Depends on the structure |
| Strengths | Thermal mass, many contractors | Prefabrication, dry and short works | Daylight, open volumes |
| Watch out for | Drying time, longer works | Fewer specialist firms in Luxembourg | Flat roof and appearance to be cleared with the PAP and local regulations |
Whatever the style, every new house must meet the same energy requirement. Block and brick construction in detail: see our guide to building a traditional house.
Architect, turnkey builder or general contractor: who should run the project?
There are three set-ups: an architect who designs the house and supervises separate trade contractors (fees of 8 to 15%, see architect fees in Luxembourg), a builder who delivers a turnkey house for an overall price, or a general contractor who builds your architect’s drawings. Pros, risks and the checks to make before signing (business permit, insurance, solvency, warranties): see our guide on how to choose a house builder.
Turnkey house in Luxembourg: price and contract points
A turnkey house costs €2,500 to €3,800 per m² of living space excluding land and VAT in Luxembourg, about €375,000 to €570,000 for 150 m²; since « turnkey » has no legal definition, only the contract specification says what the price includes. Excluded items, payment milestones, late-delivery penalties and handover: see our guide to turnkey house builders in Luxembourg.
Building permit and energy certificate: the two mandatory documents
A new house requires a building permit issued by the municipality’s mayor and an energy performance certificate (CPE), prepared for the build and then sent « as built » to the mayor within 2 months of hand-over.
- Review: the mayor checks compliance with the PAG, the PAP and the building regulations. There is no statutory deadline: without a decision after 3 months, the application can be treated as refused. The « silence means consent » rule of draft bill 8480 has not been passed.
- Validity: 2 years, with a single 1-year extension since 11 November 2024; certificate displayed on site; third parties have 3 months from the display to appeal.
- CPE: classes A+ to I on three indicators (primary energy, thermal insulation, CO₂), valid 10 years, supplement on actual consumption within 4 years.
Application documents and appeals after a refusal: see our guide to building permits in Luxembourg.
Financing the build: mortgage, 3% VAT, Bëllegen Akt and grants
A new build is financed with a mortgage released as the works progress, eased by 3% VAT (up to €50,000 of benefit), the Bëllegen Akt (€40,000 per buyer) and, for building permits applied for by 31 December 2026, the « sustainable housing » grant reserved for the best-performing houses.
- 3% VAT: building your main residence counts as creating housing, with no age condition. The company requests AED approval before the works and you countersign it; otherwise you pay 17% and claim a refund (invoices over €1,250 excluding VAT, total over €3,000). This refund procedure is the only option for materials you buy yourself. Still at 17%: architect, notary and engineer fees, fitted kitchen, outdoor works. The house must remain your main residence for 2 years.
- Bëllegen Akt: €40,000 tax credit per buyer on the registration duties of the purchase deed for your main residence, applied by the notary. The increase to €45,000 is a bill not yet passed (AED press release of 2 June 2025, FR).
- « Sustainable housing » grant (LENOZ): for a building permit applied for by 31 December 2026, the house must score at least 60% of the LENOZ points in each category; the grant application can be filed until 31 December 2031 (guichet.lu).
- Klimabonus for new builds: €3,000 for an air-to-water heat pump (€2,000 per dwelling in an apartment building, €10,000 maximum), with no temporary top-up; no more grants for solar thermal or wood heating in new builds.
- Klimaprêt: reserved for renovating homes over 10 years old, it does not finance a new build.
Construction premiums and state loan guarantees, subject to income: see our guide to grants for new builds.
The « sustainable housing » grant only covers building permits applied for by 31 December 2026. If you are aiming for a very high-performance house, filing before that date changes the financing plan.
Energy standards: what a new house must achieve
In Luxembourg, a new home must be a nearly zero-energy building (NZEB), assessed against a reference building; since 1 January 2023 that reference building is heated by a heat pump, which rules out a fossil boiler in practice without formally banning it.
Brochures still talk about « AAA houses »: that is the rating of the old 2007 regulation. Since the grand-ducal regulation of 9 June 2021, the CPE rates homes from A+ to I and the requirement is calculated against the reference building. Insulation, airtightness, ventilation and renewable generation are covered in our guide to energy standards for new buildings.
Get quotes to build your house
Plot owned or being purchased, desired floor area, budget: describe your project and receive 3 free quotes from construction companies established in Luxembourg, with no obligation. If you award the work packages separately, such as earthworks, masonry or roofing, find a verified tradesperson for each trade.
Your house priced by verified builders
Reply within 48 working hours. Compare specifications on the same scope, not just the totals.
Frequently asked questions about building a house in Luxembourg
Where do I start when building a house in Luxembourg?
Start with the budget: construction at €2,500 to €4,000/m² excluding land, extra costs and a borrowing capacity confirmed by the bank. Only then look for a plot, checking its PAG zoning and the PAP rules, have the house designed and file the building permit application before signing the works contracts.
What costs come on top of the construction price per m²?
On top of €2,500 to €4,000/m² excluding VAT come architect fees (8 to 15%, at 17% VAT), utility connections (€6,000 to €15,000), outdoor works (5 to 10% of the budget), the soil survey and the VAT on the construction. The plot and its purchase costs come on top of that.
Does 3% VAT apply to architect fees?
No. Architect, engineer and notary fees are excluded from the super-reduced rate and remain invoiced at 17%, like fitted kitchens, furniture and outdoor works other than direct access. Only construction works supplied and installed by a company qualify for 3%, within the €50,000 benefit cap per dwelling.
What grant is there for a heat pump in a new house?
Klimabonus pays €3,000 for an air-to-water heat pump installed in a new house, and €2,000 per dwelling in an apartment building, without the temporary top-up reserved for existing homes. Solar thermal and wood heating are no longer subsidised in new builds since 2026.
Build or buy a new-build home: which is cheaper per m²?
Excluding land, building costs €2,500 to €4,000/m², while a new-build flat sold for €9,809/m² on average in the second quarter of 2026 according to the Observatoire de l’Habitat, land and developer margin included. The comparison therefore depends on the plot price in your target municipality and on timing: 18 to 24 months before moving in when you build.
Is an energy performance certificate mandatory for a new house?
Yes. Every new build requiring a permit must have an energy performance certificate, ordered and paid for by the client. An « as built » calculation is sent to the mayor for information within 2 months of hand-over, followed by a supplement on actual consumption within 4 years.