Housing Inventory: Median Home Size in Square Feet Year-Over-Year in California was -0.86% in February of 2026, according to the United States Federal Reserve. Historically, Housing Inventory: Median Home Size in Square Feet Year-Over-Year in California reached a record high of 4.05 in July of 2023 and a record low of -6.23 in March of 2021. Trading Economics provides the current actual value, an historical data chart and related indicators for Housing Inventory: Median Home Size in Square Feet Year-Over-Year in California - last updated from the United States Federal Reserve on April of 2026.