The average price per m² in Saint-Prix is 4 064 €/m² for an apartment, based on actual notarised (DVF) sales. About 14 transactions are recorded each year.

Ambience illustration of Saint-Prix, on the slope of the Montmorency forest.
In Saint-Prix, in the Val-d'Oise, the reference price stands at 4 064 €/m² for an apartment. That level reflects the position of the municipality in the Montmorency valley, a sought-after residential area of the Île-de-France, and a stock in which the detached house dominates. The figure comes from the DVF database, that is the transactions actually registered before notaries, and not from asking prices. It gives an order of magnitude, each property still needing to be assessed on its condition, its location and its closeness to the forest.
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.
The Saint-Prix market is carried by its position in the Montmorency valley, one of the sought-after residential areas of the Val-d'Oise. Demand comes above all from working Paris-region households looking for a wooded, low-rise setting close to Paris, which supports the detached house, the dominant product of the municipality. The Montmorency state forest, which covers a large part of the territory, reinforces the garden-town image and the relative scarcity of properties. The volume of annual transactions remains measured, which makes each sale sensitive to the particular features of the property, its floor area, its condition and its closeness to the forest.
In the longer term, the protection of the forest and of the listed areas limits the arrival of new schemes and makes building land scarce. That supply constraint, in a sought-after area close to the capital, tends to support the values of existing houses. Good access to Paris and to the employment hubs of the northern Paris region keeps residential appeal steady, without bringing Saint-Prix into line with the levels of the most expensive municipalities of the near suburbs.
Saint-Prix sits in the upper range of its area of the Val-d'Oise: its prices are above those of several neighbouring municipalities of the Montmorency valley and come close to those of Montmorency, the benchmark of the area.
Saint-Prix, in the Val-d'Oise, is an old hillside village set on the southern slope of the outlier hill that carries the Montmorency forest, some fifteen kilometres north of Paris. The village came under the lords of Montmorency, who founded a priory in the neighbouring forest in the Middle Ages, later turned into a hunting lodge. Long modest, it counted only a handful of inhabitants at the end of the Middle Ages and lived from the vine and from cultivating the slopes.
In the revolutionary period, the municipality took for a time the name Bellevue-la-Forêt, a mark of its wooded setting and of its views over the plain. In the 19th and 20th centuries, like other municipalities of the Montmorency valley, Saint-Prix gradually turned into a holiday retreat and then into a residential municipality, carried by the arrival of the railway and by the closeness of the capital. The old hillside village, the church and the former residences bear witness to that past.
Today Saint-Prix presents itself as a garden town of the Val-d'Oise, a large part of whose territory is taken up by the Montmorency state forest. The municipality combines quality low-rise detached housing, a sought-after wooded setting and good access to Paris. That residential profile, more than local economic activity, explains how its property market holds up.
According to INSEE, the French national statistics institute, Saint-Prix has around 7 612 inhabitants. This Val-d'Oise municipality attracts working Paris-region households looking for a green setting at the foot of the Montmorency forest, within reasonable distance of Paris. The housing stock is dominated by the detached house, often on wooded plots, apartments remaining rarer. Demand comes above all from families looking to settle for the long term, which steers the market towards main residences rather than towards buy-to-let investment. The closeness of the stations of the area and of the routes to the capital supports that residential appeal.
The reference price in Saint-Prix stands at 4 064 €/m² for an apartment. That figure comes from DVF data, the sales actually signed before notaries. It is an average: a hillside house close to the Montmorency forest and a more central apartment can depart markedly from that base, depending on floor area, condition and location. Each property deserves a valuation of its own.
Saint-Prix belongs to the Montmorency valley, an area of the Val-d'Oise known for its quality of life. A large part of its territory is covered by the Montmorency state forest, which earns it its garden-town image. That wooded setting, combined with quality low-rise detached housing and with the closeness of Paris, attracts Paris-region families and lastingly supports property values in the municipality.
Saint-Prix lies some fifteen kilometres north of Paris, in an area of the Val-d'Oise well connected to the capital. The stations of the neighbouring municipalities of the Montmorency valley give access to the Paris-region rail network, and the road network makes it possible to reach the employment hubs of the northern Paris region. That accessibility, combined with the wooded setting, explains part of the residential appeal of the municipality.
The local market is above all a market of houses: low-rise homes and hillside houses, often on wooded plots at the foot of the Montmorency forest. Apartment supply exists but remains more limited. For a buyer, the house is the dominant product, suited to settling in as a family for the long term. An apartment can suit a first purchase, but most transactions involve detached homes.
A large part of the territory of Saint-Prix is taken up by the Montmorency state forest and by listed areas, which limits building land and frames construction on the forest edge. The hillside relief can also impose particular constraints. Before any project, it is worth consulting the local planning scheme at the town hall to check whether a plot can be built on and which rules apply to extensions.
This analysis is published by Immover, an independent observatory founded by Antony Barbier. Data sourced from official sources (DVF, INSEE, Notaries of France).