4321 Edison Street

San Mateo, CA 94403

$3,595,000 $936 / sqft Est. $18,178/mo

8
Beds
9
Baths
3,839
Sq Ft

Active 2 days on market

Listed By Patrick LamDRE #01764668

CENTURY 21 Masters

Tom Schulze · Broker

Your inquiry will go to Tom Schulze, who is not the listing agent for this property.

Lot Size
9,496 sqft
Year Built
1949
Property Type
Residential
Property Subtype
Single-family home
Garage Spaces
2
View
Yes
HOA
No
Days on Market
2 days
Sophisticated modern living in desirable Westwood Knolls! Situated on a quiet cul-de-sac, extensively renovated and expanded, this exceptional residence offers approx. 3,839 sq. ft. of living space with 8BD/9BA, including a newly constructed two-story rear extension, on an expansive 9,496 sq. ft. lot. The main residence features dramatic 12-ft ceilings, White Oak hardwood floors, an electric fireplace, and accordion glass doors opening to a view deck with breathtaking city and Bay views. The chefs kitchen showcases a waterfall island, quartz countertops, sleek cabinetry, and high-end Thermador appliances, including a built-in wine refrigerator. The main level offers 5BD/6BA, including 4 en-suites, plus a sunroom and family room with fireplace and wet bar. Additional highlights include multi-zone A/C and heating, ceiling speakers, and 3 decks. The downstairs legal ADU (4321A Edison St) offers separate entrance, 3BD/3BA, including 2 en-suites, an open living area, kitchen with eat-in island, sunroom, and a spacious deck. 2-car garage, tankless water heaters, plus an oversized lot with parking for 10+ vehicles, RV, & boat/trailer. Conveniently located near Hillsdale shopping, dining, Caltrain, and major freeways. A rare combination of space, views, modern luxury, and versatility!

Open Houses

  • Tuesday, October 6 · 5:00 PM – 6:00 PM

  • Thursday, October 8 · 5:00 PM – 6:00 PM

  • Saturday, October 10 · 2:00 PM – 4:00 PM

  • Sunday, October 11 · 2:00 PM – 4:00 PM

  • Thursday, October 15 · 5:00 PM – 6:00 PM

Estimate a monthly payment

—/mo

Principal and interest only. Property taxes, insurance and any HOA dues are not included and will increase this amount.

Estimates only, for your own planning. Not a loan offer, a pre-qualification, or a quote from any lender.

Features

Interior Features

Interior
  • Breakfast Bar
Appliances
  • Dishwasher
  • Disposal
  • Microwave
  • Refrigerator
  • Range Hood
  • Dryer
  • Washer
Heating
  • Central
  • Heat Pump
Fireplace
  • Living Room
Flooring
  • Tile
  • Wood
Laundry
  • Gas Dryer Hookup

Exterior Features

Lot
  • Sloped Down
View
  • Bay
  • City Lights
  • Mountains
Roof
  • Flat
  • Shingle

Market insights

Computed from CRMLS data for San Mateo.

Property history

No prior MLS sale records.

Based on information from California Regional Multiple Listing Service, Inc. as of October 5, 2026 at 6:00 PM PDT 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 broker or MLS. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information. Any amount of compensation or commission stated is made only to participants of CRMLS or an MLS that has entered into a datashare agreement with CRMLS.

Where it is