The average price per m² in Le Mesnil-le-Roi is 4 243 €/m² for an apartment, based on actual notarised (DVF) sales. For a house or villa, it is 6 317 €/m². About 22 transactions are recorded each year.
Mood illustration of Le Mesnil-le-Roi, a residential municipality of the Yvelines between the forest of Saint-Germain and the Seine.
In Le Mesnil-le-Roi, the average price of apartments stands at 4 243 €/m², based on the sales actually recorded in the DVF database, which registers the transactions completed before notaries. This residential municipality of the Yvelines, set between the forest of Saint-Germain-en-Laye and the left bank of the Seine, is very largely made up of detached housing. Houses, which dominate the stock, trade markedly higher, at around 6 317 €/m² on average, a reflection of the residential character of the municipality. Location, closeness to the forest and to the station, the presence of a garden and the energy rating all move prices. These notarial figures give a municipal benchmark; a reliable valuation then rests on comparable properties.
House : 6 317 €/m²
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.
Le Mesnil-le-Roi benefits from the lasting appeal of the loop of the Seine and of the western Yvelines, one of the most sought-after residential sectors in the Paris region. Driven by well-off families and managers looking for space, a green setting and quick access to Paris, demand for houses meets a stock limited by the size of the municipality and by its already largely built-up fabric. Properties close to the forest of Saint-Germain, to the Seine and to the stations concentrate value, which widens the gap with apartments.
Location, the presence of a garden, the quality of the environment and the rail service govern most of the prices; an energy-hungry property now trades at a discount, houses included. A seller offering a house in good condition, close to the forest or to the station and correctly rated on the energy performance certificate finds a buyer quickly, while a price disconnected from the location lingers on the market. Dependence on the Paris-region market and on the level of lending rates remains the main factor of sensitivity for the municipality.
Le Mesnil-le-Roi sits in the middle of the range of its neighbours in the loop of the Seine, above Sartrouville but appreciably below Maisons-Laffitte and Saint-Germain-en-Laye.
The name Le Mesnil-le-Roi comes from the Latin mansionile, the small domain, qualified by the royal reference: the king's domain, associated with François Ier. The municipality took shape between the forest of Saint-Germain-en-Laye, to the west, and the left bank of the Seine, to the east, in a sector long attached to the marquisate of Maisons. In 1777, the comte d'Artois, brother of Louis XVI and the future Charles X, bought that marquisate with its dependencies of Le Mesnil and Vaux. This proximity to the great royal and aristocratic estates left a lasting mark on the identity of the municipality and on its built environment.
The history of Le Mesnil-le-Roi is also an underground one. In the 17th and 18th centuries, then until the end of the 19th century, the subsoil of the municipality was intensively quarried for stone. The Mesnil quarries supplied the materials for the surrounding buildings and for many Paris building sites, taking part in the construction of the capital. That extractive activity shaped the territory and left a network of galleries under part of the municipality. The château de Vaux, a 17th century building located on its territory, also bears witness to the long-standing presence of large estates by the Seine.
The residential face of the municipality asserted itself in the 19th and 20th centuries, as the municipalities west of Paris developed along the loop of the Seine. Bordered by Maisons-Laffitte to the north, Le Pecq to the south and Saint-Germain-en-Laye to the west, separated from Montesson by the river, Le Mesnil-le-Roi filled with villas and detached houses, in a green setting between forest and riverside. That history explains the present shape of the municipality: a dominant stock of detached housing, a sought-after environment and a position at the heart of a residential sector prized in the Yvelines.
Le Mesnil-le-Roi has around 6 300 inhabitants, according to INSEE, the French national statistics institute, in a residential sector west of Paris. The housing stock is very largely dominated by the detached house, often villas and pavilions with a garden, apartments being clearly in the minority. Buyers are above all well-off families and managers working in Paris or in the employment hubs of the western Paris region, drawn by the green setting, the closeness of the forest of Saint-Germain and a rail service to the capital. Demand focuses first of all on houses, rarer on the market, which keeps this segment under strong pressure and explains the marked gap with apartments.
The average price of apartments in Le Mesnil-le-Roi stands at 4 243 €/m², and that of houses at around 6 317 €/m², based on the DVF transactions registered before notaries. The gap reflects the very suburban character of the municipality, where the detached house dominates and concentrates demand. Closeness to the forest and to the station, the presence of a garden, the condition of the property and its energy rating explain most of the differences. A reliable valuation rests on comparable sales rather than on the average alone.
Le Mesnil-le-Roi is an essentially suburban municipality, where the house with a garden is the property families look for. The supply of apartments is more limited and more varied there, which pulls the apartment average down. Strong demand for houses, driven by well-off households looking for space and a green setting close to Paris, keeps prices high on that segment instead, hence the marked gap between the two types of property.
Yes. The municipality has a rail service to Paris and lies immediately next to Saint-Germain-en-Laye and Maisons-Laffitte, both well linked to the capital by RER and train. That accessibility, combined with the green setting between the forest of Saint-Germain and the Seine, is one of the main drivers of its residential appeal. It allows managers working in Paris to live in a quiet environment while keeping a reasonable daily journey to the capital.
The municipality is set between the forest of Saint-Germain-en-Laye, to the west, and the left bank of the Seine, to the east, which gives it a particularly green setting. Its very largely suburban fabric, made of villas and houses with gardens, reinforces that quiet residential character. Closeness to Maisons-Laffitte, Le Pecq and Saint-Germain-en-Laye completes the range of services and amenities. This sought-after environment largely explains the level of prices on the local market.
The housing stock of Le Mesnil-le-Roi is dominated by detached houses, often villas and pavilions with a garden, in a green setting between forest and Seine. Apartments are clearly in the minority there and are concentrated in a few sectors and small blocks. That predominance of detached housing gives the municipality a prized residential character, appreciated by families, and explains the price structure, where the house trades well above the apartment.
This analysis is published by Immover, an independent observatory founded by Antony Barbier. Data sourced from official sources (DVF, INSEE, Notaries of France).