Real estate prices in Essonne: in the Chevreuse valley, poorly insulated houses… and much cheaper. In Seine-et-Marne, before the opening of line 15 south, now is the time to buy in Champs Yvelines.
Val-d'Oise: tranquility at a reasonable price in Les Coteaux, in Argenteuil. In Paris, the 6th, an unsinkable district with 11.6% drop over one year, the big plunge of Meudon in Hauts-de-Seine.