Are home prices going up or down in San Mateo County, CA?

In San Mateo County, CA, the typical home sold for $1,800,000 during May 2026. That is 4% higher than the same stretch a year ago, so prices are up.

$1,800,000

Typical sale price

▲ 4% vs last year

$1,700,000

Three years ago

$1,091

Per square foot

$1,699,000

Typical asking price

Over the last 36 months the typical sale price in San Mateo County, CA went from $1,700,000 to $1,800,000 — up 6%.

The high point was $1,865,000, reached in May 2024. Today's typical sale is 3% below that.

Measured by size, homes in San Mateo County, CA are selling for about $1,091 per square foot. Price per square foot is the fairer comparison when the mix of what sells shifts from month to month — a run of big houses can push the typical price up without anything actually getting more expensive.

Source: Redfin's published market data for the San Mateo County, CA area, through May 2026.

Typical sale price, month by month.

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Figures come from Redfin's published market data for the San Mateo County, CA area, through May 2026. Neighborhood Numbers is an independent data publisher and is not affiliated with Redfin. We update these pages when Redfin publishes, once a month.