CnC Realty
1 / 93

$3,595,000

4321 Edison Street

San Mateo, CA 94403

Active

8

Beds

9

Baths

3,839

Sq. Ft.

1949

Year Built

San Mateo

County

SingleFamilyResidence

Property Type

About this home

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!

Listed by Patrick Lam · DRE #01764668 · CENTURY 21 Masters
MLS #1192003948
ListedOct 3, 2026

Property Details

Architecture

Stories1
StyleContemporary, Modern
Total UnitsN/A
RoofFlat, Shingle
Garage Spaces2
PoolN/A
SpaN/A

Features & Amenities

Interior FeaturesBreakfast Bar
Exterior FeaturesN/A
FlooringTile, Wood
CoolingN/A
HeatingCentral, Heat Pump
FireplaceLiving Room
LaundryGas Dryer Hookup
Parking FeaturesN/A
Parking Total10
Patio & PorchDeck
Entry LevelN/A
Entry LocationN/A
Common WallsNo Common Walls

Property Features

Lot Size0.22 ac
Lot FeaturesSloped Down
ViewBay, City Lights, Mountains
DirectionsCross Street: 43rd Ave

Community

Area699 - Not Defined
School DistrictOther

Tax & Financial

TermsN/A
Land LeaseN/A
HOA NameN/A
HOA FeeN/A

Request a Tour

Mortgage Estimate

$19,134/mo

20% down · 7% APR · 30-yr fixed

Estimate only. Does not include taxes, insurance, or HOA.

CRMLSLast updated: October 21, 2026 at 6:30 PM

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