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  4. > 223 S Humboldt Street, San Mateo, CA 94401
$1,198,000
4
beds
2
baths
1,510
square ft

223 S Humboldt Street
San Mateo, California 94401

Contingent / MLS #82025448 / Single Family / San Mateo
Listing information updated 12/12/2025 at 12:04pm
Charming and move-in ready single-family home in the heart of San Mateo! This beautifully updated 4-bedroom, 2-bath residence features a remodeled main kitchen and bathrooms, a spacious living area with a wood-burning fireplace, and abundant natural light throughout. An additional kitchen in the back offers flexible use, ideal for in-law quarters or a separate living space. The extra-large lot with R3 zoning provides tremendous upside potential to add an ADU or explore multi-unit development options. Ample driveway parking accommodates multiple cars. Conveniently located less than half a mile to the Caltrain station, and just minutes from vibrant Downtown San Mateo, major employers like Snowflake, SurveyMonkey, Roblox, and Gilead, with easy access to Hwy 101 and 92. Perfectly situated between San Francisco and Silicon Valley and only 10 minutes to SFO. A rare opportunity to enjoy comfort today with incredible future potential!
Beds Above Grade:
4
Cooling System:
None
Heating System:
Forced Air
Appliances:
Garbage Disposal, Microwave, Oven Range, Refrigerator, Washer Dryer
Main Level Primary Bedroom:
No
Fireplace:
Yes
Pool:
No
Age:
79 Years
Roof Type:
Composition
Parking Type:
Garage - Attached Garage, Covered Parking, Tandem Parking
Parking Spaces:
1
Garage:
Garage - 1 Car(s)
Square Feet:
1,510
Lot Size:
7828 SquareFeet
Acreage:
0.179
Tax Amount:
N/A
Tax Year:
N/A
Zip Code:
94401
City:
San Mateo
County:
San Mateo
School District(s):
San Mateo Foster City Elementary, San Mateo Union High
Elementary School:
N/A
Middle School:
N/A
High School:
N/A

Listing Agent: Mandana Simai

Listing Office: Christie's International Real Estate Sereno

Disclaimer: The data relating to real estate for sale on this display comes in part from the Internet Data Exchange program of the MLSListings MLS system. Real estate listings held by brokerage firms other than Christie’s International Real Estate Sereno are marked with the Internet Data Exchange icon (a stylized house inside a circle) and detailed information about them includes the names of the listing brokers and listing agents. Based on information from the MLSListings MLS as of 12/12/2025 at 12:04pm (date the MLS data was obtained). All data, including all measurements and calculations of area, is obtained from various sources and has not been, and will not be, verified by broker or MLS. All information should be independently reviewed and verified for accuracy.

$1,772,665
Average Sale Price
6
Average Days On The Market
102%
Sales Prices VS. List Price
Data represents the community area’s average over the past 12 months. All information deemed reliable, but not guaranteed.
Map of 223 S Humboldt Street, San Mateo, CA 94401

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223 S Humboldt Street, San Mateo, CA 94401 is a single family home currently listed at $1,198,000. 223 S Humboldt Street features 4 Beds, 2 Baths. This single family home has been listed on Christie's International Real Estate Sereno since October 21st, 2025 and was built in 1946.