223 S Humboldt ST, SAN MATEO, CA 94401

$1,598,000

bedrooms

bathrooms

square feet

1,510

Acreage

0.1797

Open Houses

Oct 25

year built

1946

Full Baths

Half Baths

Find out more

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!

Location
Subdivision	-
County	San Mateo
Elementary School	-
Middle School	-
High School	-

Driving directions

Open houses

Oct

Saturday

2PM — 4PM

Oct

Sunday

2PM — 4PM

Oct

Tuesday

10AM — 12PM

Find out more

Tell us who you are, and we will have someone reach out to you.

Name*

Email*

Phone*

Message

I have a house to sell

By proceeding, you consent to receive calls, texts and voicemails at the number you provided (may be recorded and may be autodialed and use pre-recorded and artificial voices), and email, from Kotohomes, Mandana Simai, and their network of service providers about your inquiry and other home-related matters.

Msg/data rates may apply. This consent applies even if you are on a do not call list and is not a condition of any purchase.

MLS number: ML82025448

Listing status: Active

Listing agent: Mandana Simai #01437800

Listing broker: Christie's International Real Estate Sereno (408) 335-1400

Last update: Thursday, October 23 2025 at 4:09 p.m. EDT

Kotohomes National