On Friday, March 20, Spanish Prime Minister Pedro Sánchez announced a package of measures aimed at easing the rising cost of living. Among them was an expansion of rent controls—despite mounting evidence that such policies are already failing in Spain. Reportedly yielding to pressure from one of his left-wing coalition partners, Sánchez imposed a nationwide extension of existing rental contracts at their current rates, effectively freezing rents for leases about to expire. He also introduced a 2 percent annual cap on rent increases through the end of 2027 for contracts currently indexed to inflation.The announcement came the same week as a damning report from the Instituto Juan de Mariana, which highlighted the damage rent controls are already inflicting. In Catalonia, where rent caps were introduced in 2024, the supply of rental housing has fallen by 23 percent. In the city of A Coruña and the region of Navarra, supply dropped even more sharply—by 44 percent and 51 percent respectively—only six months after they were declared “stressed” housing markets and subjected to similar caps.In a country already facing an estimated shortage of 700,000 housing units, these policies are making the problem significantly worse.Beyond reducing supply, rent controls have also failed to deliver meaningful benefits for tenants. According to the report, wherever caps have been implemented, average rental unit sizes have shrunk, while prices per square meter have either remained stable or risen. In Barcelona, for instance, rents per square meter hit a record high in the third quarter of 2025.Spain’s experience stands in stark contrast to Argentina’s. Following the introduction of rent controls in 2020, rental listings in Argentina plummeted by 53 percent. After President Javier Milei repealed the law just ten days after taking office in December 2023, the market responded rapidly: rental supply surged by 180 percent within a year and a half. As of December 2025, real rental prices in Buenos Aires remained nearly 30 percent lower than two years earlier, while supply has continued to hold up.
