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8 Beds
9 Baths
3,839 sqft

$3,595,000

4321 Edison Street, San Mateo CA, 94403

Price per sqft$936.44
Built in1949
Property size3,839 sqft
Property typeResidential
Listed by Patrick Lam CA DRE# 01764668 with CENTURY 21 Masters 415-710-3704

Overview

Active

Listed Oct 3, 2026

Updated 3h ago

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!

$23,918/mo

Est. mortgage payment based on a $3,595,000 home price.

All estimates are provided by Luxury Presence for informational purposes only. Actual amounts may vary.

Additional information

MLS® ID
ML82063527

Interior Features

Bedrooms
8
Bathrooms
9
Fireplace
Yes
Cooling
Yes
Heating
Yes
Basement
No

Exterior Features

Lot Size
0.22 Acres

Other Property Details

Garage
Yes
View
Yes

Also listed on MLSLISTINGS

MLS provider logo

Listed by Patrick Lam CA DRE# 01764668 with CENTURY 21 Masters 415-710-3704

Based on information from the California Regional Multiple Listing Service (CRMLS) as of 10/7/2026. 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. 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. Property locations as displayed on any map are best approximations only and exact locations should be independently verified. Any offer of compensation is made only to participants of the MLS where the listing is filed.

©2026 California Regional Multiple Listing Service (CRMLS) all rights reserved.

Data last updated on 10/7/2026 at 7:40 AM UTC Last Checked: 7:40 AM UTC

 

 

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