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223 S Humboldt StreetSan Mateo, CA 94401

For Sale

$1,598,000

Smart Buyer Rebate $15,980

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!

Listed by Mandana Simai

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License #01437800

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Christie's International Real Estate Sereno

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408-315-9958

Last updated October 27, 2025

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Source: MLSListings #ML82025448

Listing Facts

  • TypeSingle-family
  • NeighborhoodGateway
  • Bedrooms4
  • Days on Prevu6
  • Size1,510 sqft
  • Price per sqft$1,058

Amenities

  • Pets Allowed
  • Parking

Location

Mortgage Calculator

Listing History

10/27/2025
Status changed to Active
$1,598,000
10/26/2025
Status changed to Removed from Feed
$1,598,000
10/25/2025
Status changed to Active
$1,598,000
10/24/2025
Status changed to Removed from Feed
$1,598,000
10/23/2025
Status changed to Active
$1,598,000
10/23/2025
Status changed to Removed from Feed
$1,598,000
10/21/2025
Listed by Christie's International Real Estate Sereno
$1,598,000

Property Details for 223 S Humboldt Street

Exterior

Construction

  • Roof: Composition
  • Stories: 1
  • Year Built: 1946
  • Year Built Details: 2

Measurements

  • Building Area Total: 1,510
  • Lot Size Acres: 0.17
  • Lot Size Area: 7,828
  • Lot Size Source: Assessor
  • Lot Size Square Feet: 7,828
  • Lot Size Units: Square Feet

Financial

Taxes

  • Parcel Number: 033-134-220

Interior

Features

  • Appliances: Garbage Disposal, Microwave, Oven Range, Refrigerator, Washer/Dryer
  • Fireplace Features: Living Room, Wood Burning
  • Fireplaces Total: 1
  • Flooring: Hardwood

Measurements

  • Living Area: 1,510

Rooms

  • Bathrooms Full: 2
  • Bedrooms Total: 4

Parking

Parking

  • Attached Garage: Yes
  • Garage Spaces: 1
  • Garage: Yes
  • Parking Features: Attached Garage, Covered Parking, Tandem Parking

Schools

Elementary School

  • Elementary School District: San Mateo-Foster City Elementary

High School

  • High School District: San Mateo Union High

Utilities

Equipment

  • Heating: Forced Air
  • Laundry Features: Inside
  • Sewer: Public Sewer
  • Utilities: Public Utilities, Water - Public
  • Water Source: Public

Based on information from MLSListings™️ and/or other sources. All data, including all measurements and calculations of area, is obtained from various sources and has not been, and will not be, verified by Prevu or the MLS. Information is provided exclusively for consumer's personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumer may be interested in purchasing.

Full MLS Disclaimers

Rebate estimate is indicative only and based on listing price and estimated buyer's agent commission paid by owner, if applicable. Final rebates are subject to Terms of Use and may vary due to final negotiated transaction terms.