The average price per m² in Berthe (La Seyne-sur-Mer) is 2 717 €/m² for an apartment, within a range of 2,3 to 3,2 k€ per m², based on actual notarised (DVF) sales. Over the period, the market rose 3 % over 5 years and rose 8,6 % over the last 12 months, with about 147 transactions per year.

The Berthe district, a large northern housing estate of La Seyne-sur-Mer, under urban renewal and the most affordable area of the town.
The average price per m² in the Berthe district of La Seyne-sur-Mer stands at 2 717 €/m² for an apartment, based on actual notarised sales (DVF data, the French notarised sales database). A range of 2 251 to 3 175 €/m² covers half of the sales, the gap depending on the floor, the aspect and the condition of the property. The five-year trend is +3 %.
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 2 638 €/m² in 2021, the average price in the Berthe district of La Seyne-sur-Mer reaches 2 717 €/m² in 2026, roughly +3 % over the period.
Local shops and services in the district, complemented by the nearby centre of La Seyne and its shops.
The urban renewal is creating new green spaces and refurbishing the district's leisure facilities.
Schools, health services and local amenities serve a residential district undergoing transformation.
The Berthe district of La Seyne-sur-Mer. Google Maps.
Berthe extends across the north of La Seyne-sur-Mer, over an area of around 109 hectares near the town centre. Built in the urgency of the post-war years, this large estate of apartment blocks became the town's main social housing district. Long marked by its slab-block urban form, it is today the subject of a large-scale urban renewal programme.
The renewal project, launched in recent years, provides for the demolition of run-down housing and the building of new homes, with the aim of opening the district up to the rest of the town, creating green spaces and refurbishing amenities. This transformation is gradually changing the face of the area, between renovated housing and new developments.
The most affordable area of La Seyne-sur-Mer, Berthe attracts price-conscious buyers and investors. The ongoing urban renewal and the proximity of the town centre support the district's development, where prices remain the most moderate in the town.
Berthe attracts first-time buyers, buyers on a modest budget and investors sensitive to the entry price. Demand focuses on the apartments of the large estate, in a district under urban renewal. Prices, the most affordable in La Seyne-sur-Mer, and the proximity of the town centre make it an entry market, whose ongoing transformation is gradually reshaping the setting.
The average price in Berthe is 2 717 €/m² for an apartment (actual DVF transactions, notarised sales), within a range of 2 251 to 3 175 €/m² depending on the building, the floor and the condition.
Berthe is a large collective housing estate built in the post-war years in the north of the town. Its housing stock and its slab-block layout, currently being renovated, explain prices that remain the most moderate in La Seyne-sur-Mer.
Yes. A large-scale urban renewal programme is under way: demolition of run-down housing, construction of new homes, creation of green spaces and refurbishment of amenities, with the aim of opening the district up to the rest of the town.
Mostly apartments in the large estate, from studios to large family homes. The district suits first-time buyers and investors sensitive to the entry price, in an area undergoing transformation.
Yes. The district lies in the north of La Seyne, near the town centre, which makes access to shops, services and transport easier. It is one of the features supporting the area's renewal.
This analysis is published by Immover, an independent observatory founded by Antony Barbier. Data sourced from official sources (DVF, INSEE, Notaries of France).