Back 840 9th Avenue
Off Market

840 9th Avenue

San Mateo CA 94402

1
2239 sq. ft.
5146 sq. ft.
Duplex
Last sold for $1,100,000
Lily Cai DoLily Cai Do, last sold this property on 07 March 2026 after 0 days on market.

Overview

SOLD OFF MARKET

Features

1 carspace
1 garage space
2239 sq. ft. floor area
5146 sq. ft. lot size
Duplex

Estimated Value

Based on this property and similar duplexes sold in San Mateo over the last 12 months, the estimated median property value of 840 9th Avenue is $1.59m.

Median value
$1.59m
Estimated value range
$1.1m - $2.31m
Median days on market
10
Estimated value trend
-15%
decrease over the last 12 months
Average days on market is based on recent, comparable sales in San Mateo. It is only an indication of the time a property is actively listed and should not be relied upon as an accurate representation of how soon a property will be sold.

Property history for 840 9th Avenue

2026
Sold
$1,100,000
07 Mar 2026 by Lily Cai Do, of Compass

Happy sellers in San Mateo

~%

We have insufficient information to provide an overview of customer satisfaction for San Mateo. Viewing the agent profiles, reviews and sales for San Mateo can provide insights for this location.

Local market activity for duplexes in San Mateo

In the last 12 months, 7 duplexes similar to 840 9th Avenue, have been sold.

This represents a 47% increase in duplexes sales when compared to the previous 12 months.

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