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423 42nd AvenueSan Mateo, CA 94403

For Sale

$1,698,000

Smart Buyer Rebate $16,980

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!

Listed by Cathy Liu

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License #01917044

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Realty Innova

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408-826-2548

Last updated April 20, 2026

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Source: MLSListings #ML82043124

Listing Facts

  • TypeSingle-family
  • NeighborhoodWestwood Knolls
  • Bedrooms3
  • Days on Prevu18
  • Size1,180 sqft
  • Price per sqft$1,439

Amenities

  • Pets Allowed
  • Parking

Location

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Listing History

04/15/2026
Listed by Realty Innova
$1,698,000

Property Details for 423 42nd Avenue

Exterior

Construction

  • Roof: Composition, Shingle
  • Stories: 1
  • Year Built: 1953
  • Year Built Details: 2

Measurements

  • Building Area Total: 1,180
  • Lot Size Area: 5,663
  • Lot Size Source: Assessor
  • Lot Size Square Feet: 5,663
  • Lot Size Units: Square Feet

Financial

Taxes

  • Parcel Number: 042-211-010

Interior

Features

  • Fireplace Features: Living Room

Measurements

  • Living Area: 1,180

Rooms

  • Bathrooms Full: 2
  • Bedrooms Total: 3

Parking

Parking

  • Attached Garage: Yes
  • Garage Spaces: 2
  • Garage: Yes
  • Parking Features: Attached Garage

Schools

Elementary School

  • Elementary School District: San Mateo-Foster City Elementary

High School

  • High School District: San Mateo Union High

Utilities

Equipment

  • Cooling: Central Forced Air
  • Heating: Forced Air
  • Sewer: Public Sewer
  • Utilities: Public Utilities, Water - Public
  • Water Source: Public

Frequently Asked Questions

How many bedrooms does this single-family home have?

There are 3 bedrooms in this single-family home at 423 42nd Avenue.

Does this single-family home have parking?

Yes, there are 2 parking spaces available for 423 42nd Avenue.

How does 423 42nd Avenue compare to other single-family homes in Westwood Knolls?

This single-family home is listed 19% below the average price for single-family homes in Westwood Knolls and has been on the market for 3 less days than the typical home in this area.

What is the square footage on this single-family home?

According to the MLS, this listing is 1,180 sqft.

423 42nd Avenue is a 3-bedroom single-family home for sale in San Mateo CA 94403. On Prevu for 18 days at $1,698,000. This residence features 1,180 square feet of living space, located in San Mateo. The median listing price for single-family homes in this area is $2,100,000. Property amenities include pets allowed and parking. Explore more single-family home listings in San Mateo.

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.