As of 2023, Japan's overcrowding rate stood at 21.9%. The forecasted data from 2024 to 2028 shows a consistent decline in overcrowding rates, decreasing from 21.5% in 2024 to 20% by 2028. This indicates a decreasing trend in household overcrowding, with an average annual decrease (CAGR) of approximately 1.9% over the period. The year-on-year reduction reflects notable progress in housing policies and urban development.

Future trends to watch for:

Urban redevelopment projects that may further alleviate overcrowding.
Government policies aimed at increasing housing supply and affordability.
Demographic shifts such as aging populations and migration patterns impacting housing demand.