Active Listings
82
⇩ 28.1% vs 114 last year
Data as of September 2026. Source: Realtor.com.
The Castro Valley, CA real estate market currently shows 82 active listings, with 25 pending sales. Homes are averaging 32.4 days on the market before going under contract.
Inventory has tightened compared to last year, with 32 fewer active listings — creating more competition among buyers.
Homes are selling faster, averaging 32.4 days on market compared to 43.2 days last year.
The median listing price has fallen 1.2% year-over-year, from $1,100,634 to $1,087,201.
Population: 60,709 · Density: 862.0/mi² · Median household income: $139,095
Typical home value: $1,009,615 · Homeownership: 72.3%