Buying property in Käerjeng: prices, rents and what buyers from abroad should know

Apartments in Käerjeng averaged an asking price of €7,793.1/m² in Q3 2026 according to CASAFARI Area Insights (indexed listings, outliers excluded; asking prices, not transaction prices), up 4.5% on Q3 2025 but still 17.3% below Q1 2023. Located in south-west Luxembourg on the Belgian border, about 20 km from the capital and home to roughly 11,300 residents, Käerjeng is a primary-residence commuter market rather than a second-home destination. Practically, a 70 m² flat asks around €545,500 before 7% transfer duties, which the €40,000 Bëllegen Akt credit eliminates for most owner-occupiers.

Where is Käerjeng, and who buys there?

Imagine sitting in Brussels, Paris or London with a new job contract in Kirchberg. You open a map of the Grand Duchy, look at the €9,764/m² transaction averages in the capital, and begin tracing the motorways outwards. Twenty kilometres west-south-west of Luxembourg City, where the A13 and the N5 approach the Belgian border at Aubange and Athus, a name you might hesitate to pronounce keeps appearing in property searches: Käerjeng.

Käerjeng is the Luxembourgish name for the commune created on 1 January 2012 by merging Bascharage and Clemency. On portals and train timetables you will just as often see Bascharage, the French and German name for its central town, alongside the four other localities: Hautcharage, Linger, Clemency and Fingig. According to the Syvicol commune profile for Käerjeng, citing STATEC figures as of 1 January 2026, the commune counts 11,343 inhabitants (about 11,300), making it the tenth most populous of Luxembourg's 100 communes.

This is a working commuter town in the canton of Capellen, served by rail line 70 from Bascharage-Sanem station and anchored locally by the Bommelscheuer and Op Zaemer business zones as well as the Brasserie Nationale in Bascharage. Buyers here are overwhelmingly owner-occupiers acquiring a main home: domestic households, resident expatriates working in the capital or Esch-Belval, and cross-border households moving across from the Belgian province of Luxembourg. A small minority of domestic investors buy one- and two-bedroom flats to let. It is not a holiday or second-home market.

What do apartments cost in Käerjeng?

In Q3 2026, apartments for sale in Käerjeng recorded an average asking price of €7,793.1/m², based on listings indexed by Area Insights, the source of the price series in this guide (location id 3692766, queried 23 October 2026, outliers excluded). That represents a 4.5% increase year on year from €7,458.2/m² in Q3 2025, and a 3.9% rise quarter on quarter from €7,497.8/m² in Q2 2026.

At this Q3 2026 asking level, a typical 70 m² two-bedroom apartment carries an asking price of roughly €545,500, while a 100 m² family flat sits near €779,300. When budgeting, it is essential to distinguish between asking prices and notarised deeds. CASAFARI tracks what sellers and developers ask on the market today; official state statistics measure completed transactions.

Composition also plays a part in the current asking figure. Several new-build developments in Bascharage and Hautcharage were actively marketed in late 2026. According to STATEC and Observatoire de l'Habitat, Le Logement en chiffres n°18 (covering deeds from 1 July 2024 to 30 June 2025), an apartment under construction (VEFA) sells for 20% to 32% more per square metre nationally than an existing flat of comparable size. In the Capellen-Mersch zone, VEFA transactions averaged €8,616/m² against €7,556/m² for existing stock. When new programmes enter the listings pool, the average asking price naturally leans higher, which is why valuing a flat in Bascharage with Comparables requires separating resale stock from off-plan units.

For buyers considering a house rather than a flat, the entry ticket is past the million-euro mark. In the Capellen-Mersch statistical zone that includes Käerjeng, STATEC recorded a median house transaction price of €1,018,000 and a mean of €1,076,494 between July 2024 and June 2025 (compared with a national median of €912,500 and mean of €980,916). Consequently, apartments remain the primary entry segment for relocating households.

How have prices moved since 2023?

Anyone buying in Luxembourg today is stepping into the aftermath of a sharp interest-rate correction. In Käerjeng, average apartment asking prices fell from €9,424.1/m² in Q1 2023 to a trough of €7,319.6/m² in Q2 2025 (CASAFARI Area Insights). That was a 22.3% peak-to-trough reduction over nine quarters as higher borrowing costs froze transaction volumes across the Grand Duchy.

Since that Q2 2025 low, asking prices in the commune have recovered by 6.5% to reach €7,793.1/m² in Q3 2026, clawing back roughly a third of the earlier drop while remaining 17.3% below Q1 2023. The trajectory has not been a straight line: asking averages moved to €7,654.4/m² in Q4 2025, dipped to €7,572.5/m² in Q1 2026 and €7,497.8/m² in Q2 2026, before lifting to €7,793.1/m² in Q3 2026. One stronger quarter does not make a straight-line rebound.

Nationally, the market has stabilised at a gentler pace. According to the Observatoire de l'Habitat, Rapport d'analyse n°25 (Q1 2026), published on 25 June 2026, STATEC's hedonic transaction price index rose 1.7% year on year in Q1 2026 (+0.9% for existing apartments and +3.0% for existing houses), while the national asking-price indicator for apartments stood at -2.9% year on year. Käerjeng's +4.5% asking-price growth in Q3 2026 is therefore running ahead of the national trend, helped by new-build supply in Bascharage.

Transaction volumes tell the same story of gradual normalisation after policy-driven swings. In Q2 2025, national apartment sales hit a record 1,923 deeds as buyers rushed to beat the expiry of temporary crisis tax measures on 30 June 2025 (STATEC, Le Logement en chiffres n°18). By Q1 2026, national volumes had settled back to 1,175 apartment sales (968 existing and 207 VEFA) and 650 house sales—an improvement on the slump, though still well below the 2017–2021 first-quarter average of 1,654 apartments and 773 houses.

How does Käerjeng compare with Luxembourg City and the rest of the country?

The core argument for Käerjeng is the price gap with the capital. Looking at notarised transaction prices for existing apartments between 1 July 2024 and 30 June 2025 (STATEC / Observatoire de l'Habitat, Le Logement en chiffres n°18), the Capellen-Mersch zone sits about 23% below the canton of Luxembourg and slightly under the national average.

Statistical zone	Existing apartments (€/m²)	New-build VEFA (€/m²)	House mean price (€)
Canton of Luxembourg	€9,764	—	€1,294,206
National average	€7,800	€10,028	€980,916
Capellen-Mersch (includes Käerjeng)	€7,556	€8,616	€1,076,494
Canton of Esch-sur-Alzette	€6,869	—	—
East	€6,803	—	—
North	€6,062	—	—

STATEC's spatial analysis shows that apartment prices per square metre in Luxembourg decline steadily with travel time to the capital, placing the Capellen corridor in the €7,000–€8,000/m² band. For buyers comparing commuter towns or weighing the 20 km drive against city living, our guide to the Luxembourg City property market and the Luxembourg country guide break down how the capital's districts and neighbouring cantons price that commute.

What about rents and rental yields?

Throughout 2025, asking rents for apartments in Käerjeng stayed within a tight band of €26.8/m² to €28.4/m², averaging roughly €27.5/m² across the year (CASAFARI Area Insights, Q3 2026). For a 70 m² flat, that corresponded to a monthly asking rent of around €1,925.

In the first three quarters of 2026, however, the CASAFARI asking-rent series for Käerjeng recorded readings of €39.1/m² (Q1), €43.1/m² (Q2) and €37.5/m² (Q3). CASAFARI flags these 2026 figures with a data caution: in a commune of 11,300 people where most residents own their home, a handful of high-spec, serviced or furnished listings can skew a quarterly rental sample. Nationally, the Observatoire de l'Habitat reported that asking rents for apartments rose by a modest 4.4% year on year in Q1 2026 (Rapport d'analyse n°25). A 40% jump in Käerjeng is a sample-composition effect, not a market-wide rent surge.

For anyone modelling a buy-to-let purchase—and looking at how investors use CASAFARI data to stress-test assumptions—yield calculations should rest on the 2025 baseline. Dividing the 2025 average asking rent of €27.5/m² (annualised to €330/m²) by the Q3 2026 average asking price of €7,793.1/m² gives an indicative gross yield of about 4.2%, asking-to-asking, before service charges, taxation, maintenance and vacancy. Using the thin Q3 2026 rent reading would imply a 5.8% gross yield, which is not a realistic benchmark to underwrite.

Prospective landlords should also note that the temporary fiscal incentives introduced during the construction downturn—specifically the 6% accelerated depreciation on new-build rental properties and the rental-investment tax credit—expired on 30 June 2025 (STATEC, Le Logement en chiffres n°18). Any 2026 acquisition must stand on its unassisted cash flow.

What taxes and rules apply when buying from abroad?

When purchasing existing residential property in Luxembourg, the buyer pays transfer taxes of 7% of the purchase price at the notarial deed, comprising a 6% registration duty (droit d'enregistrement) and a 1% transcription duty (droit de transcription), plus notary fees (Étude, 2026; buyers should always confirm current rates with their notary). Unlike investors, owner-occupiers benefit from the Bëllegen Akt, a tax credit offset directly against those registration and transcription duties.

Under law 8540, detailed in the Chambre des Députés report on law 8540 (Bëllegen Akt at €40,000), the Bëllegen Akt was made permanent from 1 July 2025 at up to €40,000 per natural person, or €80,000 for two people buying jointly. Crucially for international staff relocating to the Grand Duchy, the credit is open to both residents and non-residents, provided the buyer commits to occupying the property as their main residence. On our worked example of a 70 m² apartment in Käerjeng asking €545,500 in Q3 2026, the 7% duties come to about €38,200 ( leaving aside the minimal fixed €100 charge when the credit covers the liability). A single first-time buyer using their full €40,000 allowance covers the entire 7% tax bill.

For those considering a new-build (VEFA) apartment in Bascharage or Hautcharage, registration duties apply only to the land share of the deed. The construction or renovation of a main residence benefits from Luxembourg's super-reduced VAT rate of 3%, capped at a €50,000 VAT advantage per dwelling, as noted in the methodology accompanying open data on apartment sale prices by commune (STATEC / Observatoire de l'Habitat, 2025–2026). Meanwhile, the temporary crisis measures—such as the halved taxable base for registration duties—ended on 30 June 2025.

How to check Käerjeng prices yourself

Every asking-price and rent series in this guide was pulled from CASAFARI's database using location identifier 3692766 (Käerjeng), resolved via Location Lookup. If you are building valuation models or market reports, you can query the exact time series through the Area Insights endpoint documentation or pull listing-level comps using the Comparables and valuation API docs.

Analysts who prefer working inside their own AI workflows can connect Casafari MCP directly to query commune-level metrics using their plan's tokens, while agents and buyers tracking current inventory in Bascharage, Hautcharage or Clemency can use Property Sourcing for new listings in Käerjeng. To explore the data interactively or generate a valuation report for a specific address, you can open a CASAFARI platform account and run your own search on Area Insights.