Average floor area: 138.77 m² and 63.54 m²
Figures from the 2023 Housing and Land Survey give 138.77 m² per dwelling in Toyama and 63.54 m² in Tokyo. They cover occupied dwellings built solely for residential use. Vacant homes and dwellings combined with shops are outside this average.
Toyama's report further splits its figures into 166.63 m² for owner-occupied homes and 48.67 m² for rentals. That gap is hidden in the 138.77 m² average. Matching Tokyo figures for each tenure group were not verified in the materials used here, so owner-occupied and rental floor areas cannot be compared separately across the two places.
Homeownership: 74.9% in Toyama, 44.7% in Tokyo
In the same 2023 survey, owner-occupied homes accounted for 74.9% of occupied dwellings in Toyama and 44.7% in Tokyo. These are shares by housing tenure, not counts of how many homes each household owns.
Toyama has many owner-occupied homes, which are larger than its rentals, and that mix affects the overall average. According to the national survey summary, more than 70% of Tokyo's occupied dwellings are apartments. Building type and land use matter alongside tenure when considering the size gap.
How many people live in each household?
A different source, the 2020 census, reports 2.50 people per private household in Toyama and 1.92 in Tokyo.
A census private household and a main household in the housing survey are not the same population, and the surveys are three years apart. Dividing the floor-area figures above by these household sizes would therefore not produce a valid per-person living-area comparison.
Several people in a large home and one person in a small home experience space differently. These figures show differences in housing size, tenure and household composition. They do not measure costs, commuting, maintenance or family preferences, so floor area alone cannot establish which place is easier to live in.