As of 2023, the average price per square meter in Saint Germain En Laye typically ranges between €4,500 and €6,500. This variation largely depends on the specific area within the town, the type of property, and its proximity to amenities and public transport. For instance, properties situated near the RER train station or the town center tend to command higher prices, often reaching around €7,500 per square meter. In contrast, residential areas further from the center may see prices as low as €3,800 per square meter. Additionally, new developments and renovated historic properties usually achieve premium pricing due to their modern amenities and aesthetic appeal.