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Every listing shows your estimated rebate.

The green number on each home is what could come back to you: the buyer-broker fee (typically 2 to 3%) minus our flat $9,750. No other search shows you this, because no other brokerage gives it back.

At a glance

2421 Shannon Drive, SOUTH SAN FRANCISCO, CA, 94080

$1,628,000·2.5 bd·2 ba·MLSListings #ML82065531

Estimated Arrivva buyer rebate$22,000 to $40,000

Every completed rebate is published: see all 211 closings.

Listing data from MLSListings. Rebate estimate calculated by Arrivva.

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$1,628,000
1 Day On Site

2421 Shannon Drive
SOUTH SAN FRANCISCO, CA 94080

For Sale|Single Family Residence|Active
4
Beds
2.5
Total Baths
2
Full Baths
1
Partial Bath
1,950
SqFt
$835
/SqFt
1963
Built
County:
San Mateo
Listed by of Maryann Ernst of KW Advisors (415) 361-9921
Call Now: (408) 868-2620
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(408) 868-2620
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2421 Shannon Drive2421 Shannon Drive2421 Shannon Drive2421 Shannon Drive
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Set on a 7,145 sqft lot, one of the largest in Westborough, 2421 Shannon Drive welcomes you with a charming front porch, stone accents, and an extra long driveway. This four bedroom, two and a half bathroom home of 1950 total sqft (permitted sunroom included) offers bright interiors and generous outdoor space. Beautifully refinished floors warm the living room and upstairs bedrooms, while a separate dining area with a brick fireplace invites gathering. The kitchen features rich dark cabinetry, granite countertops, and a mosaic tile backsplash. An expansive permitted sunroom, framed by walls of windows overlooking the backyard, offers versatile space for relaxing, entertaining, or morning coffee. Four upstairs bedrooms provide flexibility for guests or a home office. The spacious backyard features curved garden beds, mature plantings, and paved areas for outdoor dining. A concrete pad offers potential for a future ADU, subject to city approval. An attached finished two car garage and extended four car driveway provide exceptional parking. Near Westborough Square shopping and dining, Highway 280, and Monte Verde Elementary, this home pairs everyday convenience with room to grow. Discover the space, comfort, and lasting potential of 2421 Shannon Drive in desirable Westborough.

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Listing Snapshot
Price 
$1,628,000
Days On Site 
1 Day
Bedrooms 
4
Inside Area (SqFt) 
1,950 sqft
Total Baths 
2.5
Full Baths 
2
Partial Baths 
1
Lot Size 
0.164 Acres
Year Built 
1963
MLS Number 
ML82065531
Status 
Active
Property Tax 
N/A
HOA/Condo/Coop Fees 
N/A
Sq Ft Source 
N/A
Friends & Family
Recent Activity
yesterdayListing updated with changes from the MLS
yesterdayListing first seen on site
General Features
Attached Garage 
Yes
Cross Street 
Olympic
Disclosures 
https://hlm.homelight.com/link/2421-Shannon-Drive-iefjfdfe
Foundation 
Concrete Perimeter
Garage 
Yes
Garage Spaces 
2
Number Of Stories 
2
Parking 
AttachedOn Street
Parking Spaces 
4
Property Sub Type 
Single Family Residence
SqFt Total 
1950
Water Source 
Public
Zoning 
R10006
Interior Features
Fireplace 
Yes
Heating 
Forced AirNatural GasCentral
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Exterior Features
Pool Features 
None
Roof 
CompositionShingle
Community Features
School District 
South San Francisco Unified
Schools
School District
South San Francisco Unified
Elementary School
Monte Verde Elementary
Middle School
Westborough Middle
High School
South San Francisco High
Listed by of Maryann Ernst of KW Advisors (415) 361-9921



The data relating to real estate for sale on this display comes in part from the Internet Data Exchange program of the MLSListings™ MLS system. Real estate listings held by brokerage firms other than eXp Realty are marked with the Internet Data Exchange icon and detailed information about them includes the names of the listing brokers and listing agents. IDX information is provided exclusively for personal, non-commercial use, and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Information is deemed reliable but not guaranteed. Copyright 2026, MLS Listings, Inc..
Last checked: 2026-10-24 10:36 PM UTC

Neighborhood & Commute
Source: Walkscore
Disclosure: Community information and market data powered by Constellation Data Labs. Information is deemed reliable but not guaranteed.
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*Estimate only. Actual rebate may vary based on final price, lender requirements, MLS rules, and broker policies.

Questions about this listing

How much could a buyer get back on 2421 Shannon Drive, SOUTH SAN FRANCISCO, CA, 94080?
Arrivva estimates a buyer rebate of $22,000 to $40,000 on this listing. The buyer-broker fee, typically 2 to 3% of the price, goes back to you minus Arrivva's flat $9,750 fee. Every completed rebate is published on the Arrivva results page. See every completed closing
How do I schedule a tour of 2421 Shannon Drive, SOUTH SAN FRANCISCO, CA, 94080?
Set up a quick chat with Arrivva by phone or video. The team confirms showing availability fast, tours the home with you, and walks you through offer strategy and the rebate math before you commit to anything. Set up a time to talk

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