93 photos · MLS data verified October 9, 2026 · Updated every 15 min
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$3,595,000
Active
8 Beds·9 Baths·3,839 sqft·9,496 sqft lot·Built 1949
4321 Edison St, San Mateo, CA 94403
Listed 6 days ago · | MLS# ML82063527
$936/sqft
4321 Edison St is a single-level, 8-bedroom, 9-bath single family home in San Mateo 94403 with 3,839 square feet of living space, built in 1949. It is listed at $3,595,000, or $936 per square foot.
Est. $22,660/moP&I $18,654 · Tax $3,745 · Insurance $262 · HOA $0Assumes 20% down ($719,000) at 6.75% · Contact Timothy for a lender referralAegis Luxury Real Estate is a licensed California real estate brokerage (DRE# 01328224) and is not a mortgage lender, mortgage broker, or loan originator. The figures shown are estimates for general reference only and do not constitute a loan offer, pre-approval, pre-qualification, or commitment to lend. Estimates use a property tax rate of 1.25% of home price annually. Actual rates, payments, taxes, and insurance vary by lender and borrower qualifications. Contact Timothy for a referral to one of our preferred lending partners.
Single Family Price Position in San Mateo
$1.4M$3.6M
106Active in San Mateo
28Active Single Family Homes
1.7 moInventory
Why This Home Stands Out
🏠
Single Level, 8 Bed / 9 Bath, 3,839 sqft
Everything on one floor, with the primary bedroom on the ground level. Built in 1949, attached 2-car garage.
🌱
OPEN SAT, 2PM TO 4PM
Tour the property in person. No appointment needed.
⚡
Just Listed, 6 Days on Market
Early showings often see the most competition.
Best fit forActive BuyersSan Mateo SearchersMove-Up / Move-In
About 4321 Edison St
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!
MLS ID #ML82063527, Patrick Lam. Listing provided by CENTURY 21 Masters · MLSListings Inc.
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Property Details for 4321 Edison St
Overview
- Property Type
- Single Family Residence
- Year Built
- 1949
- Stories
- 1
- Bedrooms
- 8
- Bathrooms
- 9 Full
- Living Area
- 3,839 sqft
- Lot Size
- 9,496 sqft (0.22 acres)
- Price/sqft
- $936
- Status
- Active
Interior
- Primary Bedroom
- Primary suite retreat2plus, Bedroomon ground floor2plus, Primary bedroom2plus, Ground floor primary bedroom2plus
- Kitchen
- , 220 volt outlet
- Appliances
- Dishwasher, Garbage disposal, Hood over range, Microwave, Oven range electric, Refrigerator, Dryer, Washer
- Fireplace
- Living room, Other, Two, way
- Heating
- Central forced air, Heat pump, Heating, 2plus zones
- Cooling
- Multi, zone
- Flooring
- Hardwood, Tile, Vinyl linoleum
- Laundry
- Hookup, gas dryer, Tub sink
- Family Room
- Separate family room
- Interior Features
- One or more skylights
Exterior and Parking
- Garage
- Attached, 2 spaces
- Roof
- Flat, Shingle
- Foundation
- Concrete perimeterand slab
- Construction
- Stone
- View
- Bay, City lights, Mountains
- Lot Features
- Grade sloped down
- Fencing
- Other, Wood
- Zoning
- R10006
Community and HOA
- Utilities
- Natural gas available, Public, Water public
- County
- San Mateo
- City
- San Mateo
Schools
- School District
- San Mateo Foster City Elementary
- San Mateo Schools
- View San Mateo schools
Listing
- MLS Number
- ML82063527
- Listed
- October 3, 2026
- Days on Market
- 6
- Listing Agent
- Patrick Lam
- Listing Brokerage
- CENTURY 21 Masters
- Data Verified
- October 9, 2026
Source: MLSListings Inc. School attendance boundaries are set by the district and can change; verify directly with the district.
Free from Aegis · Updated for October 2026
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📄San Mateo Market ReportFree 9-page PDF with bedroom breakdowns, comp data and pricing trends, updated monthly.Email Me the Report →📋San Mateo Buyer BriefA personalized brief with comp data, offer strategy and neighborhood context.Email Me the Report →🎯San Mateo Offer StrategyComp analysis and bid recommendations before you write an offer on this home.Email Me the Report →
Location
4321 Edison St, San Mateo, CA 94403 · San Mateo County
Market Context
Price Positioning
🏠 Inventory: 4 8-bedroom homes and 28 single family homes currently active in San Mateo.
Source: MLSListings Inc. Timothy Alston, Broker, DRE# 01328224.
Want to know what this home will actually sell for? Get a data-backed offer range based on recent comparable sales.
Get My Offer Range →Frequently Asked Questions
Listed at $3,595,000 ($936/sqft).
Listed October 3, 2026. That is 6 days on market as of October 9, 2026.
Est. $22,660/mo with 20% down ($719,000) at 6.75%. That is principal and interest $18,654, property tax $3,745 and insurance $262. The assumptions and lender disclosure are with the payment estimate at the top of this page.
There are 106 active listings in San Mateo: 4 are 8-bedroom and 28 are single family homes.
Yes. As of October 9, 2026, 4321 Edison St is an active listing at $3,595,000. It is a 8-bedroom, 9-bath single family home.
See This Home · Scheduling Is Free
Timothy Alston
Broker · DRE# 01328224 · Over 23 Years Experience
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In San Mateo, 15 new listings hit the MLS this week. By the time most search sites update, the window has already narrowed.
Nearby Homes
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MLS ID #ML82064045, Christopher Eckert. Listing provided by KW Advisors · MLSListings Inc.
New
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Nearby Open Houses
See All →OPEN SAT, 2PM TO 4PM$1,550,000
2514 S Norfolk St, San Mateo
4 bd · 2 ba · 1,516 sqft
MLS ID #ML82064045, Christopher Eckert. Listing provided by KW Advisors · MLSListings Inc.
OPEN SAT, 1PM TO 4PM$1,225,000
43 Tidal Way, San Mateo
2 bd · 2.5 ba · 1,235 sqft
MLS ID #ML82063901, Tatiana Kirasirova. Listing provided by Intero Real Estate Services · MLSListings Inc.
OPEN SAT, 2PM TO 4PM$2,750,000
20 W 3rd Ave 601, San Mateo
2 bd · 2.5 ba · 2,800 sqft
MLS ID #ML82043883, Susan Herman. Listing provided by Compass · MLSListings Inc.
OPEN SAT, 2PM TO 4PM$998,800
1217 Shoreline Dr, San Mateo
3 bd · 2 ba · 1,570 sqft
MLS ID #ML82064053, Alexandra Zhou. Listing provided by Morgan Real Estate · MLSListings Inc.
OPEN SAT, 2PM TO 4PM$3,950,000
469 Fairfax Ave, San Mateo
3 bd · 3 ba · 3,700 sqft
MLS ID #ML82063634, The Dwyer Group. Listing provided by Compass · MLSListings Inc.
Buyers
See 4321 Edison St before the weekend
Listed 6 days ago.
Questions
Talk to Timothy directly
Timothy Alston, Broker, DRE# 01328224. Over 23 years in Silicon Valley real estate.
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