The big picture: The housing market is considered balanced when supply meets the six-month level. Nationally, this hasn't happened since 2012.
Fewer than six months of supply indicates a seller's market, while more months indicates a buyer's market.
By the numbers: In May 2019, the Bay Area had 1.4 months of available housing supply compared to two months worth in May 2024, according to Redfin's housing market analysis.
Statewide, housing supply has yet to return to pre-pandemic levels.