Walloon Brabant – Wallonia
Property prices in Lasne
In 2025 in Lasne, the median house sold for €740,000 (184 sales), according to registered deeds compiled by Statbel. These are real sale prices, not asking prices.
Data refreshed 2026-07-10. Latest complete sales year: 2025.
Median house price
€740,000
Houses, middle 50% of sales: €537,500–€997,500
Registered sales
184
in 2025
Median sale price in Lasne since 1980
HousesApartmentsBefore 2010: older statistical series (dashed)Shaded band: middle 50% of sales (2010 onwards)
Statbel’s figures have two breaks: in 2005 the administrative source behind the statistics changed (transaction counts shift, most visibly in Brussels), and in 2010 the classification moved from the nature of the deed to the cadastral nature of the property. Segments on either side of a break are not strictly comparable. Prices are medians in euros of the day, not adjusted for inflation.
Homes sold per year in Lasne
HousesApartments
In 2025, 184 houses changed hands in Lasne, +52.1% versus a year earlier. Volume is what makes the medians readable: a thin year swings, a busy year does not.
How prices are moving
| 1 year | 5 years | 10 years | |
|---|---|---|---|
| Houses | +13.8% | +17.5% | +46.5% |
The market in milestones
| Year | Median house | Median apartment |
|---|---|---|
| 1980 | €60,146 | – |
| 1990 | €68,171 | – |
| 2000 | €136,341 | €94,727 |
| 2010 | €449,000 | – |
| 2020 | €630,000 | – |
| 2025 | €740,000 | – |
In 1980, the median house in Lasne sold for €60,146; today it is €740,000, about 12 times as much in euros of the day.
Compared with the province and Belgium
| Lasne | Walloon Brabant | Belgium | |
|---|---|---|---|
| Median house price | €740,000 | €405,000 | €315,000 |
| Median apartment price | – | €260,000 | €250,000 |
Medians for 2025. A dash means no published figure.
Over ten years, median house prices in Lasne moved +46.5%, against +57.5% across Belgium.
No commune in Walloon Brabant province posted a higher 2025 median house price: Lasne tops all 27 with published figures.
Who lives in Lasne
Incomes run above the Belgian median: the typical tax declaration in Lasne showed €34,046 in 2023, 13% more than nationally. It is an owners’ commune: 76% of households owned their home at the 2021 census, against 65% across Belgium. The population is stable at 14,151 residents (2026), +0.1% since 2016.
Source: Statbel (fiscal income statistics, Census 2021 tenure, population on 1 January). Statbel real-estate statistics
Flood and soil in Lasne
Flood exposure is marginal: 1.3% of the commune's area lies in a medium or high flood-hazard zone (0.7% in the high class), with another 4.3% in the low class.
Source: the official flood-hazard maps and soil registers of the three Regions. Zones describe areas, not addresses: an immetrics dossier checks the exact parcel of a listing. regional flood-hazard mapregional soil register
Getting a property valued in Lasne
The medians above describe the Lasne market as a whole, not one specific home: size, condition, the EPC score and even the street can move an individual price well away from the middle of the market.
To value a specific house or apartment, immetrics starts from its Immoweb listing, compares it with similar homes for sale and with the official sale figures for the area, then returns a documented price verdict. The first report is free, and it works on your own listing too if you are selling.
Eyeing a home in Lasne?
Paste the Immoweb link and get a free 10-page report: a fair-price verdict from real sales, the true monthly cost, and the red flags.
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Nearby communes
On median house prices, Lasne tops this list; Waterloo comes nearest below, at €550,000.