Ain is a French department located in the eastern region of Auvergne-Rhône-Alpes. The terrain rises to its highest point at Crêt de la Neige and shares international borders with the Swiss cantons of Vaud and Geneva, alongside domestic borders with the departments of Rhône, Saône-et-Loire, Jura, Haute-Savoie, Savoie, and Isère.
Overall, property prices in Ain sit slightly above the French national average, though the local market varies significantly by town. The largest concentrations of housing are found in Ferney-Voltaire and the prefecture of Bourg-en-Bresse. While Bourg-en-Bresse and nearby Ambérieu-en-Bugey offer the most affordable housing in the department, prices rise sharply in the communities closer to the Swiss border. Ferney-Voltaire, Saint-Genis-Pouilly, and Crozet are substantially more expensive, while the spa town of Divonne-les-Bains stands as the dearest market in the region, with prices far exceeding those in the west.