Exceptional duplex investment opportunity in a desirable San Mateo location! Build in 1986, this well-maintained property features two spacious 3 bedroom, 2.5-baths units, each with an attached one-car garage, private driveway parking, and generous living space. Large rear yard offers excellent potential to add an ADU or explore future expansion possibilities(Buyer to verify with the City of San Mateo). Ideally located just minutes from vibrant Downtown San Mateo, Caltrain, shopping, dining, parks, and major commute routes including Highways 101 and 92. An outstanding opportunity for investors or owner-occupants seeking strong rental income and long-term upside.
Property Details
Price:
$1,780,000
MLS #:
ML82056708
Status:
Active
Beds:
0
Baths:
0
Type:
Single Family
Subtype:
Duplex
Neighborhood:
699notdefined
Listed Date:
Aug 11, 2026
Finished Sq Ft:
4,008
Total Sq Ft:
4,008
Lot Size:
7,602 sqft / 0.17 acres (approx)
Year Built:
1986
See this Listing
Schools
School District:
Other
Interior
Cooling
NO
Exterior
Accessibility Features
NO
Garage Spaces
2
Roof
OTH
Financial
Taxes
$18,903
Map
Community
- Address143145 N N. Humboldt ST San Mateo CA
- CitySan Mateo
- CountySan Mateo
- Zip Code94401
Market Summary
Current real estate data for Single Family in San Mateo as of Aug 14, 2026
69
Single Family Listed
77
Avg DOM
900
Avg $ / SqFt
$1,739,623
Avg List Price
Property Summary
- 143145 N N. Humboldt ST San Mateo CA is a Single Family for sale in San Mateo, CA, 94401. It is listed for $1,780,000 and features 0 beds, 0 baths, and has approximately 4,008 square feet of living space, and was originally constructed in 1986. The current price per square foot is $444. The average price per square foot for Single Family listings in San Mateo is $900. The average listing price for Single Family in San Mateo is $1,739,623.
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Courtesy of WEM Pacific Investment Inc.. Disclaimer: All data relating to real estate for sale on this page comes from the Broker Reciprocity (BR) of the California Regional Multiple Listing Service. Detailed information about real estate listings held by brokerage firms other than include the name of the listing broker. Neither the listing company nor shall be responsible for any typographical errors, misinformation, misprints and shall be held totally harmless. The Broker providing this data believes it to be correct, but advises interested parties to confirm any item before relying on it in a purchase decision. Copyright 2026. California Regional Multiple Listing Service. All rights reserved.143145 N N. Humboldt ST
San Mateo, CA