Save
Ask
Tour
Hide
Share
$3,595,000
1 Day On Site

4321 Edison Street
San Mateo, CA 94403

For Sale|Single Family Residence|Active
8
Beds
9
Total Baths
9
Full Baths
3,839
SqFt
$936
/SqFt
1949
Built
County:
San Mateo
Listed by Patrick Lam of CENTURY 21 Masters [email protected]
Upcoming Open Houses
Sun, Oct 4, 2:00 PM - 4:00 PM
Wed, Oct 7, 5:00 PM - 6:00 PM
Sat, Oct 10, 2:00 PM - 4:00 PM
Sun, Oct 11, 2:00 PM - 4:00 PM
Fri, Oct 16, 5:00 PM - 6:00 PM
4321 Edison Street4321 Edison Street4321 Edison Street4321 Edison Street
Save
Ask
Tour
Hide
Share

Mortgage Calculator

Monthly Payment (Est.)

Enter an interest rate to see your estimated monthly payment.
Calculator powered by Showcase IDX, a Constellation1 Company. Copyright ©2026 Information is deemed reliable but not guaranteed.

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!

Save
Ask
Tour
Hide
Share
Listing Snapshot
Price 
$3,595,000
Days On Site 
1 Day
Bedrooms 
8
Inside Area (SqFt) 
3,839 sqft
Total Baths 
9
Full Baths 
9
Partial Baths 
N/A
Lot Size 
0.218 Acres
Year Built 
1949
MLS® Number 
ML82063527
Status 
Active
Property Tax 
N/A
HOA/Condo/Coop Fees 
N/A
Sq Ft Source 
Other
Friends & Family
Recent Activity
9 hours agoListing updated with changes from the MLS®
yesterdayListing first seen on site
General Features
Acres 
0.218
Attached Garage 
Yes
Garage 
Yes
Garage Spaces 
2
Number Of Stories 
1
Parking 
Attached
Parking Spaces 
10
Property Sub Type 
Single Family Residence
Sewer 
Public Sewer
Special Circumstances 
Standard
Style 
ContemporaryModern
Utilities 
Natural Gas Available
Water Source 
Public
Zoning 
R10006
Interior Features
Appliances 
DishwasherDisposalMicrowaveRefrigeratorRange HoodDryerWasher
Cooling 
Fireplace 
Yes
Fireplace Features 
Living Room
Flooring 
TileWood
Heating 
CentralHeat Pump
Interior 
Breakfast Bar
Laundry Features 
Gas Dryer Hookup
Window Features 
Skylight(s)
EntryFoyer 
Kitchen 
Save
Ask
Tour
Hide
Share
Exterior Features
Construction Details 
Stone
Fencing 
Wood
Lot Features 
Sloped Down
Patio And Porch 
Deck
Roof 
FlatShingle
View 
BayCity LightsMountain(s)
Waterview 
BayCity LightsMountain(s)
Windows/Doors 
Skylight(s)
Community Features
MLS Area 
699 - Not Defined
School District 
Other
Schools
School District
Other
Elementary School
Unknown
Middle School
Unknown
High School
Unknown


This information is for your personal, non-commercial use and may not be used for any purpose other than to identify prospective properties you may be interested in purchasing. The display of MLS data is usually deemed reliable but is NOT guaranteed accurate by the MLS. Buyers are responsible for verifying the accuracy of all information and should investigate the data themselves or retain appropriate professionals. Information from sources other than the Listing Agent may have been included in the MLS data. Unless otherwise specified in writing, the Broker/Agent has not and will not verify any information obtained from other sources. The Broker/Agent providing the information contained herein may or may not have been the Listing and/or Selling Agent.

Neighborhood & Commute
Source: Walkscore
Save
Ask
Tour
Hide
Share