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Market Intelligence · CA / Alameda County

Castro Valley, CA home prices and housing market

2 ZIP markets liveData updated September 2026Typical value$1.19M1-yr changeUp1.2%

The typical home value in Castro Valley, CA is $1.19M as of September 2026, up 1.2% from a year ago, based on the Zillow Home Value Index. In the typical Castro Valley ZIP code, the median list price is $1.23M and homes spend a median of 30 days on market as of September 2026 (Realtor.com).

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The coverage

Castro Valley, by the numbers.

Typical home valueZillow ZHVI, September 2026
$1.19M
1-yr changeMedian across Castro Valley ZIPs
+1.2%
ZIP markets live
2
County
Alameda County

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12-month value trend

+1.2% over 12 months

Typical home value in Castro Valley over the last 12 months: $1.17M in Sep 2025 to $1.19M in Sep 2026 (+1.2%).

Sep 2025$1.17M

Sep 2026$1.19M

Median Zillow home value index across Castro Valley's ZIP codes.

Context

Castro Valley's typical home value sits at $1,185,752, up 1.2% over the past year as of September 2026. The median list price is $1,234,000, with 56 homes currently on the market and 34 new listings. Homes spend a median of 30 days on market before selling. About 16.5% of listings have seen a price cut, suggesting some sellers are adjusting to market conditions. If you're considering a sale, the moderate pace and price adjustments indicate a balanced market where pricing strategy matters.

The numbers

What is the housing market like in Castro Valley, CA?

Typical home value

$1.19M

Up1.2%YoY

Median list price

$1.23M

Days on market

30

Homes for sale

56

Price cuts

16.5%

New listings

34

Sources · Zillow ZHVI (September 2026) / Realtor.com (September 2026)

Figures reflect Castro Valley's ZIP codes with market data: values and listing medians take the median across ZIPs; inventory and new listings are summed.

Prices over time

Castro Valley, CA home prices over time

Typical home values in Castro Valley, CA are up 1.2% over the past year, from $1.17M in September 2025 to $1.19M in September 2026.

Typical home value in Castro Valley, CA, September of each year
MonthTypical value1-yr change
September 2026$1,185,752+1.2%
September 2025$1,171,705No prior year

Typical value is the median Zillow Home Value Index across Castro Valley ZIP codes, taken in September of each year so every row compares the same month.

Market balance

Is Castro Valley, CA a buyer's or seller's market?

Castro Valley, CA leans toward a seller's market.

Homes are selling quickly, which usually gives sellers the stronger position.

Based on a median of 30 days on market and 16% of listings with a price cut in the typical Castro Valley ZIP code, and 34 new listings against 56 active listings across Castro Valley, as of September 2026 (Realtor.com).

The outlook

Castro Valley housing market forecast 2027

+1.5%

Weighted average of Zillow's ZIP forecasts, 12 months to September 2027

A weighted average of Zillow's ZIP forecasts, across 2 Castro Valley ZIP codes, points to typical home values rising 1.5% by September 2027.

Over the 12 months through September 2026, typical home values in Castro Valley rose 1.2%, per the Zillow Home Value Index.

Will home prices drop in Castro Valley?

The forecasts do not call for a drop: a weighted average of Zillow's ZIP forecasts for Castro Valley shows typical home values rising 1.5% by September 2027, after a 1.2% rise over the past 12 months. Forecasts are not guarantees: mortgage rates, inventory, and the wider economy can move values either way.

How this is calculated: each ZIP code's 12-month Zillow forecast is weighted by its typical home value (Zillow Home Value Index, September 2026). 2 Castro Valley ZIP codes have both figures.

Forecast: a weighted average of Zillow's ZIP forecasts (Zillow Home Value Forecast, published October 2026), calculated by Home Value Pros. A forecast, not a guarantee.

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Live markets

What ZIP codes are live in Castro Valley?

Typical value is the Zillow home value index (ZHVI) for each ZIP, as of September 2026. 1-yr change compares it to the same ZIP a year earlier.

Zillow ZHVI, September 2026

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Common questions

Questions about Castro Valley, CA home prices.

What's the typical home value in Castro Valley?

As of September 2026, the typical home value in Castro Valley is $1,185,752, which is up 1.2% over the past year.

How long do homes typically stay on the market?

The median days on market is 30, meaning homes are selling at a steady pace in the area.

What share of homes are seeing price cuts?

As of September 2026, 16.5% of listings in Castro Valley have a price cut, reflecting some seller adjustments in the current market.

Are home prices going up or down in Castro Valley, CA?

Typical home values in Castro Valley, CA are up 1.2% over the past year, based on the Zillow Home Value Index as of September 2026.

Is Castro Valley, CA a buyer's or seller's market?

Castro Valley, CA leans toward a seller's market. Homes are selling quickly, which usually gives sellers the stronger position. Based on a median of 30 days on market and 16% of listings with a price cut in the typical Castro Valley ZIP code, and 34 new listings against 56 active listings across Castro Valley, as of September 2026 (Realtor.com).

Nearby markets

More California housing markets.

The market is moving

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