223 S Humboldt Street San Mateo, CA ^$ 1,198,000

223 S Humboldt Street

^$ 1,198,000

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223 S Humboldt Street

San Mateo, CA, 94401

^$ 1,198,000

Bedrooms4 Baths2.0 Sq 1,510

Monthly Estimate*

^$ 7,474

Listed by Christie's International Real Estate Sereno

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Single Family Home for sale in San Mateo, CA

for $1,198,000 with 4 bedrooms and 2 full baths. This 1,510 square foot home was built in 1946 on a lot size of 0.1797.

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!

Single Family Contingent

Price

^$ 1,198,000

Bedrooms

Full Bath

Property Type

Single Family

Taxes

^$ 0

Style

Lot Size

0.1797

Year Built

1946

Town/City

San Mateo

County/Region

San Mateo

MLS | Web ID

ML82025448

Days on Market

Features

General

Living Area 1510

Sewer Public Sewer

Heating Forced Air

Cooling None

Roof Composition

Appliances Disposal Microwave Refrigerator

Zoning RM0003

Garage Spaces 1

Year Built 1946

Property Subtype Single Family Residence

County San Mateo

New Construction false

Property Type Residential

HOA false

Attached Garage true

Garage Y/N true

Full Baths 2

Special Listing Conditions Standard

Status Active Under Contract

Directions Cross Street: 2nd Ave

City San Mateo

High School District Other

MLS Area 699 - Not Defined

Lot Size Units Square Feet

Lot Size Square Feet 7828

Property Attached Y/N false

Standard Status Active Under Contract

Occupancy Type Vacant

Year Built Source Assessor

Property Sub Type Additional Single Family Residence

Interior

Flooring Wood

Fireplace Features Living Room Wood Burning

Total Stories 1

Common Walls No Common Walls

Air Conditioning Y/N true

Heating Y/N true

Fireplace Y/N true

Total Bedrooms 4

Total Baths 2

Exterior

Parking Features Covered

Water Source Public

Total Parking 1

Lot Size Area 7828

Foundation Details Concrete Perimeter

Lot Size Acres 0.1797

Lot Size Source Assessor

* Excluded Features

List By

Christie's International Real Estate Sereno

Broker

mandana@sereno.com

Affordability Calculator

$7,474

Per Month

Monthly Principal & Interest: $7,474
Monthly Property Taxes: --
Monthly Home Insurance: --

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Default based on a 30-year fixed rate of 6.375% with 20% down. The estimated payment is offered for convenience and is not an offer of credit. Due to market fluctuations, interest rates are subject to change at any time and without notice. Your individual rate may vary. Rates may differ for FHA, VA or jumbo loans.

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Nearby

Trends
Schools

Single family listings in San Mateo, CA

Average List Price ^$2,287,956

Percent of Sale Price 91%

About San Mateo, CA

105,907 Population

14% Since 2002

^$102,688 Median Income

41.09 Median Age

27% Households with Children

View more area information

Trends Information provided by ATTOM Data Solutions.

4827338 Elementary School

4827337 Middle School

Unknown High School High School

See complete school information

Pricing History

Date	Price	Price Change	Description
12/1/2025	$1,198,000	-25.03%	Price Down
11/28/2025	$1,598,000		Listed Price

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223 S Humboldt Street, San Mateo, CA, 94401 is a Single Family Home for sale at $1,198,000 with 1,510 sqft and a lot size of 0.1797. 223 S Humboldt Street has 4 bedrooms, 2.0 baths, and was built in 1946. The property's zip code is 94401 which is in San Mateo, CA

*Information deemed reliable but not guaranteed.

Financial calculator disclaimer: Default based on a 30-year fixed rate of 6.375% with 20% down. The estimated payment is offered for convenience and is not an offer of credit. Due to market fluctuations, interest rates are subject to change at any time and without notice. Your individual rate may vary. Rates may differ for FHA, VA or jumbo loans.

Listing data provided courtesy of the Internet Data Exchange Program of the California Regional Multiple Listing Service, Inc..

Based on information from California Regional Multiple Listing Service, Inc. as of 12/17/2025. This information is for your personal, non-commercial use and may not be used for any purpose other than to identify prospective properties you may be interested in purchasing. Display of MLS data is usually deemed reliable but is NOT guaranteed accurate by the MLS. Buyers are responsible for verifying the accuracy of all information and should investigate the data themselves or retain appropriate professionals. Information from sources other than the Listing Agent may have been included in the MLS data. Unless otherwise specified in writing, Broker/Agent has not and will not verify any information obtained from other sources. The Broker/Agent providing the information contained herein may or may not have been the Listing and/or Selling Agent.

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223 S Humboldt Street

Single Family Home for sale in San Mateo, CA

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