Overview
- Insee’s July 2025 report shows that 25% of French households—about 7.6 million main residences—have at least three more rooms than they need.
- Single-family homes represent 93% of under-occupied dwellings, with 41% of houses and 4% of apartments meeting the study’s threshold and nearly three-quarters exceeding 100 m².
- The share of under-occupied residences rose from 22% in 2006 to 25% in 2022 as the population aged and children left family homes.
- Among active households, farmers face the highest rate of under-occupation at 44%, followed by artisans, merchants and business owners at 28%, executives at 27% and workers and employees at 16%.
- Under-occupation is most pronounced in Brittany and the suburban rings of major cities despite only 36% of households perceiving excess space and 9% expressing a wish to move.