Province of Liège – Wallonia
Property prices in Olne
In 2025, the median sale price in Olne was €343,500 for a house (34 sales), according to Statbel. The latest figures: in the first half of 2026, the median house sold for €307,000, against €357,500 in the first half of 2025.
Median house, first half of 2026
€307,000
−14.1% on Jan–Jun 2025 (€357,500), 20 sales
Median house, 2025
€343,500
Middle 50% of sales: €275,000–€415,000
Bought at the 2025 median of €343,500 as your only home, a house in Olne costs about €358,000 all-in, with registration tax and notary fees. Borrowing 80% of the price adds about €5,500 for the mortgage deed. Since 2025 an only home in Wallonia pays 3%, a rate that replaced the old allowance (the abattement). The true cost of buying a home in Belgium, item by item
Work out what your savings and income can buy
Eyeing a home in Olne?
Paste the link of a home on Immoweb, Belgium’s main property site, and get a free 11-page report: the asking price checked against comparable listings and recorded sales, the true monthly cost, and the red flags.
The verdict up front: where the asking price sits, the cash you need on day one, and what it costs each monthOpen the full 11-page sampleHouse and apartment prices in Olne, by type
| Property type | Median price 2025 | Middle 50% of sales | Sales |
|---|---|---|---|
| Detached house | €343,500 | €275,000–€490,000 | 25 |
First half of 2026, against the first half of 2025
| Property type | First half of 2025 | First half of 2026 | Change | Sales, Jan–Jun 2026 |
|---|---|---|---|---|
| All houses | €357,500 | €307,000 | −14.1% | 20 |
In 2025, 34 houses changed hands in Olne, 54.5% more than in 2024.
Asking price per m² in Olne
| Property type | Median asking price per m² |
|---|---|
| Houses | €1,899/m² |
On 26 October 2026, 17 houses in Olne were advertised for sale on Immoweb. Immoweb marked 29% of the houses as under offer.
Median sale price in Olne since 1980
HousesShaded: middle 50% of sales
In 1980, the median house in Olne sold for €40,283, and in 2000 for €74,368 (Belgian francs converted to euros); today it is €343,500, about 9 times as much as in 1980.
How prices are moving
In Olne, the median house price rose 24.9% in 2025, 32.4% over five years and 88.2% over ten years. The latest figures: in the first half of 2026, the median house sold for €307,000, against €357,500 in the first half of 2025.
| 2024–2025 | 2020–2025 | 2015–2025 | |
|---|---|---|---|
| Houses | +24.9% | +32.4% | +88.2% |
Price history in Olne, year by year
| Year | Median house | Median apartment |
|---|---|---|
| 2025 | €343,500 | – |
| 2024 | €275,000 | – |
| 2022 | €280,000 | – |
| 2021 | €225,000 | – |
| 2020 | €259,500 | – |
| 2019 | €215,000 | – |
| 2018 | €215,000 | – |
| 2017 | €210,000 | – |
| 2015 | €182,500 | – |
| 2014 | €197,000 | – |
| 2013 | €150,000 | – |
| 2012 | €175,643 | – |
| 2011 | €190,000 | – |
| 2010 | €180,000 | – |
Compared with the province and Belgium
| Olne | Province of Liège | Belgium | |
|---|---|---|---|
| Median house price | €343,500 | €235,000 | €315,000 |
| Median apartment price | – | €183,722 | €250,000 |
Over ten years, the median house price in Olne rose 88.2%, against a 57.5% rise across Belgium.
Olne has the 5th highest 2025 median house price in Liège province.
Who lives in Olne
Incomes run above the Belgian median: the typical tax declaration in Olne showed €35,614 in 2023, 18% more than nationally. Most households here own their home: 78% did at the 2021 census, against 65% across Belgium. Olne is gaining residents: the population rose 5.7% between 2016 and 2026, to 4,179.
Flood risk in Olne
Flood exposure is marginal: 2.3% of the commune’s area lies in a medium or high flood-hazard zone (1.4% in the high class), with another 2.8% in the low class. Flood and soil are two of the checks to run on one specific home before you sign; our guide to what to check before making an offer covers the rest.
Estimate a house or apartment in Olne
Frequently asked questions
Got a listing in mind?
Paste the link and have the full report before you make an offer, because an accepted offer binds you. Getting this wrong costs thousands. Checking costs nothing.
Nearby communes
On median house prices, Olne tops this list; Herve comes nearest below, at €285,000.