The average price per m² in Liane-Daunou (Boulogne-sur-Mer) is 1 367 €/m² for an apartment, within a range of 1,2 to 1,5 k€ per m², based on actual notarised (DVF) sales. Over the period, the market rose 8 % over 5 years and fell 9,9 % over the last 12 months, with about 12 transactions per year.

Liane-Daunou, a residential area in the south of Boulogne-sur-Mer, the most affordable in the town.
Apartments in the Liane-Daunou district, in Boulogne-sur-Mer, sell at an average price of around 1 367 €/m², based on the prices actually recorded (DVF transactions). Between 1 232 and 1 487 €/m² covers half of the sales, the spread coming down to the type of property, the storey, the condition and the closeness of the river Liane. Five-year change: +8 %.
Prices from the DVF file (Demandes de valeurs foncières, published by the DGFiP), transactions actually recorded at the notary, aggregated at district level using the IRIS zoning of INSEE. Cross-referenced with the Notaires de France - INSEE indices. Learn more about our methodology.
After 1 266 €/m² in 2021, the average price in the Liane-Daunou district of Boulogne-sur-Mer reaches 1 367 €/m² in 2026, roughly +8 % over the period.
The local shops of the area are complemented by those of the centre of Boulogne-sur-Mer.
A residential area in the south along the Liane, between houses and apartment blocks.
Schools and local services serve the families of the district.
Liane-Daunou, a residential area in the south of Boulogne-sur-Mer. Google Maps map.
Liane-Daunou is a residential area in the south of Boulogne-sur-Mer, along the Liane, the river that crosses the town before reaching the sea at the harbour. It spreads away from the centre, in a fabric mixing houses and apartment blocks.
The district has a residential character, close to the amenities and to the roads that link the south of the town to the centre and to the neighbouring towns. Its position on the bank of the Liane and at the southern entrance to the town makes it an area that Boulogne residents readily recognise in daily use.
On the market, Liane-Daunou is the most affordable area of the town, at around 1 367 €/m². Demand covers the houses and apartments of the area, sought after for prices more accessible than the rest of Boulogne.
Liane-Daunou attracts first-time buyers, families and investors looking for the most accessible prices in Boulogne-sur-Mer, in a residential area in the south along the Liane. Demand covers the houses and apartments of the district, valued for their more measured cost and the access to the centre.
The average price in Liane-Daunou is 1 367 €/m² for an apartment (actual DVF transactions, notarised sales), within a range of 1 232 to 1 487 €/m² depending on the building, the storey and the condition.
Yes, with an average price of around 1 367 €/m², Liane-Daunou is the most affordable area of the town. A residential area in the south along the Liane, it offers the most accessible prices in Boulogne, valued by buyers moving up the ladder and by investors.
The district occupies the south of Boulogne-sur-Mer, along the Liane, away from the centre, in a residential fabric mixing houses and apartment blocks.
The area mixes houses and apartments. It suits first-time buyers and families looking for more measured prices in Boulogne-sur-Mer.
This analysis is published by Immover, an independent observatory founded by Antony Barbier. Data sourced from official sources (DVF, INSEE, Notaries of France).