In September, Swiss rents saw a slight increase, with the overall index rising by 0.2 points to 128.1. The canton of Schwyz experienced the highest monthly rise at 3.1%, while year-on-year, rents surged by 3.9%, with Schwyz and Zug leading with increases of 11.4% and 11.1%, respectively. Notably, Basel recorded the strongest city increase at 1.1%, while Lausanne saw a decline of 0.5%.