Castro Valley CA
113 active listings out of 20K total properties we track across 10 Castro Valley ZIPs — listings, off-market homes, rentals, and full sales/tax history. Refreshed nightly.
While you're here, take in the bigger picture — maps below show San Francisco Bay Area metro, not just Castro Valley. Same company, same dataset, different resolution.
Inventory breakdown
Distribution of the 113 currently-active listings in Castro Valley, CA. Full dataset covers 20K properties — listings, off-market homes, rentals, and full history.
ZIP codes in Castro Valley
Drill into any ZIP for hex-level breakdowns.
Nearby cities
Other California cities within driving distance.
Get Castro Valley, CA data in your app
GET https://api.straply.com/v1/markets/city/castro-valley-ca
Authorization: Bearer $STRAPLY_KEY{
"city": "castro-valley-ca",
"total_tracked": 19676,
"active": 113,
"median_list": 1125000
}Castro Valley, CA real estate: market summary
As of April 2026, Straply tracks 19,676 homes in Castro Valley, CA, with 113 active for sale at a median list price of $1,125,000 (~$647/sq ft). Notably, the market is cooling — the median sale price is down 22% year over year.
- Median list price
- $1,125,000
- Median $/sq ft
- $647
- Active listings
- 113
- Median sale price
- $1,001,000 (-22% YoY)
- Properties tracked
- 19,676
Frequently asked: Castro Valley, CA real estate
What is the median home price in Castro Valley?
The median list price in Castro Valley, CA is $1,125,000 (about $647 per square foot), based on 113 active listings tracked by Straply as of April 2026.
What price range are homes in Castro Valley?
Active listings in Castro Valley, CA concentrate in: 56% $1m–$2m and 18% $750k–$1m.
Are home prices in Castro Valley going up or down?
The median sale price is $1,001,000, down 22% year over year. Straply tracked 455 sales here over the past 12 months.
How many homes are for sale in Castro Valley?
Straply is tracking 113 active listings in Castro Valley, CA out of 19,676 properties on record as of April 2026.
How old are the homes in Castro Valley?
Most homes in Castro Valley, CA were built in the 1950s. About 32% were built after 1980, while 3% predate 1940. The newest tracked home dates to 2025.
What types of homes are in Castro Valley?
Castro Valley, CA is mostly single-family homes (64% of listings). Also common: townhouses 17%, condos 12%.
How many bedrooms do homes in Castro Valley typically have?
The most common size in Castro Valley, CA is 3 bd.
What are the most active ZIP codes in Castro Valley?
The ZIP codes with the most active listings in Castro Valley, CA are 94546, 94552.
What areas are near Castro Valley?
Nearby markets Straply also tracks include Hayward, San Lorenzo, San Leandro, Union City.
Data as of April 2026. Source: Straply. For address-level history and programmatic access, use the Straply API.