Recently Listed Open House 4/18 1:30pm - 4:30pm
423 42nd Avenue
San Mateo, CA, 94403 $ 1,698,000
Bedrooms3 Baths2.0 Sq 1,180 Monthly Estimate*
$ 10,455
for $1,698,000 with 3 bedrooms and 2 full baths. This 1,180 square foot home was built in 1953 on a lot size of 0.13.
Wonderful opportunity to own a bright, sun-filled home in the highly desirable Westwood Knolls neighborhood! It has exceptional potential to move in, renovate, expand, or build new. The existing ~1,180 sq ft single-level home features 3 bedrooms and 2 bathrooms, with main living areas thoughtfully positioned to capture natural light and views. A spacious combined living and dining area creates an inviting setting, complemented by hardwood floors, abundant storage, and updated kitchen. Step outside to a private backyard, perfect for entertaining or relaxing with patio space, lawn area, mature landscaping, and room to create your dream outdoor retreat. Additional highlights include an attached two-car garage with ample storage and workspace. Ideally located just minutes from shopping, dining, parks, and major commute routes, including proximity to Hillsdale Shopping Center, Caltrain, and easy access to Highways 92 and 101. Enjoy a peaceful residential setting while remaining conveniently connected to both San Francisco and Silicon Valley. Don't miss this rare chance to own a view property with incredible upside in one of San Mateo's most sought-after neighborhoods!
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Open House
4/18/2026 1:30 PM - 4:30 PM
4/19/2026 1:30 PM - 4:30 PM
423 42nd Avenue San Mateo, CA
* Some states or local ordinances may prohibit Open Houses at this time, please confirm with your Weichert agent or local rep to confirm
FeaturesGeneralLiving Area 1180
Heating Forced Air
Cooling Central Air
Roof Composition Shingles
Zoning R100
Garage Spaces 2
Year Built 1953
Stories Count 1
Levels One Story
Property Subtype Detached
County San Mateo
Property Type Residential
HOA false
Garage Y/N true
Full Baths 2
Status Active
City San Mateo
High School District San Mateo Union High
MLS Area Listing
Lot Size Square Feet 5663
Standard Status Active
Elementary School District San Mateo-Foster City Elementary
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InteriorFireplace Features Living Room
Air Conditioning Y/N true
Heating Y/N true
Fireplace Y/N true
Total Bedrooms 3
Total Baths 2
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ExteriorParking Features Attached
Lot Size Area 5663
Foundation Details Other
Building Area Total 1180
Lot Size Acres 0.13
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* Excluded FeaturesList Bycathyliu.realtor@gmail.comEmail
Affordability Calculator
- Monthly Principal & Interest
- $10,455
- Monthly Property Taxes
- --
- Monthly Home Insurance
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Default based on a 30-year fixed rate of 6.25% 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.
Learn more about how to save NearbySingle family listings in San Mateo, CA
Average List Price $2,437,754
Percent of Sale Price 44%
About San Mateo, CA 105,907 Population
14% Since 2002
$ 102,688 Median Income
41.09 Median Age
27% Households with Children
Trends Information provided by ATTOM Data Solutions.
0 Elementary School
0 Middle School
Unknown High School High School
Pricing History| Date | Price | Price Change | Description |
|---|
| 4/15/2026 | $1,698,000 | | Listed Price |