The average price per m² in Saint-Valery-sur-Somme is 4 696 €/m² for an apartment, based on actual notarised (DVF) sales. About 11 transactions are recorded each year.
Mood illustration of a historic centre.
The average price in Saint-Valery-sur-Somme stands at 4 696 €/m², based on the DVF transactions actually registered before notaries. That is close to double the level of Amiens, fifty-eight kilometres away. The municipality shows a rare configuration: its permanent population is falling markedly, by 8 % since 2017, while 51 % of its stock consists of second homes and vacancy drops to 1,8 %.
Prices from the DVF file (Demandes de valeurs foncières, published by the DGFiP), transactions actually recorded at the notary at municipality level. Cross-referenced with the Notaires de France - INSEE indices. Learn more about our methodology.
After 5 007 €/m² in 2021, the average price in Saint-Valery-sur-Somme reaches 4 696 €/m² in 2026, roughly -6 % over the period.
Saint-Valery-sur-Somme shows an unusual combination: a permanent population in clear decline, from 2 703 inhabitants in 2012 to 2 306 in 2023, and prices among the highest in the Hauts-de-France. The two facts do not contradict each other, they answer each other. The stock is shifting gradually towards second homes, which now exceed main residences, and every dwelling that changes status leaves the market of year-round residents.
Supply is locked by a stack of protections rare at this scale: the coastal planning law, the flooding risk prevention plan approved in 2016, Grand Site de France, national nature reserve, regional nature park, and the protected heritage of the upper town where four of the five listed monuments are concentrated. None of these measures will be lifted. Scarcity is therefore structural, and it is what supports the valuation level around 4 696 €/m² in 2026.
Set back in its environment, Saint-Valery-sur-Somme sits far above the towns of the Hauts-de-France: the coast of the bay of the Somme forms a market of its own.
The town saw two major figures of French history pass through. In 1066, William the Conqueror waited there for favourable winds before shipping his fleet towards England: the eleventh-century towers that guard the entrance to the upper town have borne his name ever since. In December 1430, Joan of Arc stopped there, a prisoner, on the road to Rouen. The town withstood a fight against the Huguenots in 1568.
The rise of the port in the eighteenth century left the salt warehouse, built around 1730, which became municipal property in 1989, was protected as a historic monument two years later and reopened in the autumn of 2019 as a cultural venue. The arrival of the railway in the middle of the nineteenth century then tipped the economy from sea trade towards seaside tourism from Paris.
The metre-gauge line Noyelles - Saint-Valery - Cayeux entered service in 1887. Closed to commercial traffic between 1969 and 1972, it was saved by the Chemin de fer de la baie de Somme association, created on 13 March 1970: the twenty-seven-kilometre tourist network carried more than 187 000 passengers in 2014. The municipality has three of its stations: Saint-Valery-Ville, Saint-Valery-Port and Saint-Valery-Canal.
The market is mainly from outside: 1 200 second homes against 1 108 main residences, a case where holiday use exceeds permanent living. Buyers come in large part from the Paris region and look for a house, which accounts for close to 80 % of the stock, in one of the identified districts of the municipality: the medieval upper town, the Courtgain with its low fishermen's houses, the Abbaye district or the lower town around the port. The permanent population, for its part, is falling, which does not affect prices but tightens housing conditions for working residents.
The average price in Saint-Valery-sur-Somme is 4 696 €/m², calculated on the DVF transactions actually completed before notaries. That is close to double the level of Amiens, and the highest recorded on the coast of the Somme.
By the structure of the market. Half the stock is in second homes, vacancy is 1,8 %, and demand comes mainly from the Paris region. The bay of the Somme also carries a stack of protections that strongly limit new supply: Grand Site de France awarded in 2011, national nature reserve created in 1994, regional nature park created in 2020, Natura 2000 and the Ramsar convention.
Yes, and it is built into local planning. The Marquenterre - Baie de Somme natural risk prevention plan, ordered on 10 May 2010 and approved on 10 June 2016, deals with marine flooding and coastal erosion. It conditions or forbids building in the exposed sectors, and appears in the risk statement given to the buyer.
The apartment market is narrow, about ten sales a year: the average price there reads as an order of magnitude. The house market, which makes up close to 80 % of the stock, is better supplied. In a municipality of this kind, a valuation always gains from being refined by a local opinion taking account of the precise district, between the upper town, the Courtgain and the lower town.
This analysis is published by Immover, an independent observatory founded by Antony Barbier. Data sourced from official sources (DVF, INSEE, Notaries of France).