The average price per m² in Saint-Leu-la-Forêt is 3 686 €/m² for an apartment, based on actual notarised (DVF) sales. About 82 transactions are recorded each year.

Mood illustration of Saint-Leu-la-Forêt, a residential municipality on the edge of the forest of Montmorency, in the Val-d'Oise.
In Saint-Leu-la-Forêt, the average price of apartments comes out at 3 686 €/m², based on the sales actually registered in the DVF database kept by notaries. That level places the municipality among the most sought after in the Montmorency valley, above several neighbouring towns of the Val-d'Oise, without reaching the best rated sectors along the Seine. The stock mixes small collective buildings, low-rise detached estates and older houses, in a residential setting bordered by the forest. The closeness of the station and of the forest, the quality of the sector, the condition of the dwelling and its energy performance explain most of the gaps from one property to another. These figures, drawn from the sales signed before notaries, give a reliable municipal benchmark; a precise valuation then rests on comparable sales, examined property by property.
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-Leu-la-Forêt market is that of a sought-after residential municipality, carried by demand from Paris-region families looking for a green setting at a distance from Paris. The closeness of the forest of Montmorency and the rail service support property values, in particular well-placed houses with a garden. Energy performance is establishing itself as a criterion of negotiation on the older stock.
Supply remains constrained by the residential character of the municipality and by the protection of its wooded areas, which limits the volume of transactions and sustains values. For a seller, a quality property, close to the station or to the forest and correctly valued, stands out quickly, while an over-ambitious price settles in on a market where buyers compare with the neighbouring municipalities of the Montmorency valley.
The municipality sits in the upper range of the Montmorency valley, at a level close to Ermont and Montmorency, above neighbours such as Taverny.
Born from a woodcutters' clearing on the edge of the forest of Montmorency, Saint-Leu-la-Forêt became in the 14th century a fief of the powerful Montmorency family, then passed into the hands of the Condé until the revolutionary period. The municipality, some twenty kilometres north of Paris, keeps from that seigneurial past a marked imprint on its history and its built fabric.
At the beginning of the 19th century, Louis Bonaparte, brother of Napoléon I, and his wife Hortense de Beauharnais acquired the castles of Saint-Leu and joined their lands to form a vast park. That link with the imperial family earned the municipality the name Napoléon-Saint-Leu under the Second Empire, between 1852 and 1870.
The arrival of the railway at the end of the 19th century tied Saint-Leu-la-Forêt lastingly to the Paris conurbation and speeded up its residential growth. The town then developed as a holiday place and later as a suburb, while keeping the state forest of Montmorency, the largest in the Val-d'Oise after those of L'Isle-Adam and Carnelle, as its immediate horizon.
With a little more than 16 000 inhabitants, Saint-Leu-la-Forêt is a residential municipality of the Val-d'Oise that attracts families and working people employed in Paris or in the north-west of the conurbation. The green setting, on the edge of the forest of Montmorency, and the rail service towards the capital make it a favoured choice for anyone looking for a house with a garden without leaving the Île-de-France. First-time buyers and households in search of a larger home meet here, in a market more sought after than several neighbouring municipalities of the valley.
The average price of apartments in Saint-Leu-la-Forêt is 3 686 €/m², based on the DVF transactions actually completed before notaries. That average covers varied situations, from the older small block to the recent development. The storey, the general condition, the energy performance and the closeness of the station or of the forest explain the gaps around that value. A reliable valuation rests on comparable sales rather than on the municipal average alone.
The municipality combines a green residential setting, on the edge of the forest of Montmorency, with a good rail service towards Paris. That position appeals to families who want a house with a garden at a reasonable distance from the capital. The quality of the environment and the access to transport support demand and place the town among the most prized of the Montmorency valley.
The closeness of the state forest of Montmorency, the largest in the Val-d'Oise, is a strong asset for the municipality. The sectors closest to the edges and to the wooded areas enjoy a sought-after setting, which weighs favourably on the value of houses and of well-oriented apartments. That environment helps set Saint-Leu-la-Forêt apart from the more densely built municipalities of the valley.
The market combines town houses and detached houses with a garden, inherited from the residential growth of the municipality, with small collective blocks and more recent developments. The older houses that are well located, close to the station or to the forest, are the most contested. The variety of the stock allows varied projects, from buying an apartment to acquiring a family house.
This analysis is published by Immover, an independent observatory founded by Antony Barbier. Data sourced from official sources (DVF, INSEE, Notaries of France).