Two-thirds of the homes surveyed in Italy were built before 1981. In absolute numbers, this translates to 24 million houses. In Milan, nearly three-quarters of residences are at least 45 years old; in Genoa, the percentage exceeds 85%, while in Rome, it reaches 70%.
Where no significant renovations have been carried out—beyond simple cosmetic updates—many of these properties are energy-inefficient and may also have structural safety issues, which homeowners may be unaware of or underestimate. The choice of 1981 as a benchmark for assessing the national housing stock is not arbitrary.
