Listed 4 days ago · August 27, 2026 | MLS# ML82059314
$765/sqft -4% vs South San Francisco avg
What this means: Priced below the South San Francisco per-sqft average. Compare to recent sales below for context.
Est. $8,038/moP&I $6,476 · Tax $1,300 · Insurance $262 · HOA $0Assumes 20% down ($249,600) 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 the applicable county average 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 South San Francisco
Active listing in South San Francisco, San Mateo County. Convenient access to schools, parks, and Bay Area employment centers.
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Just Listed, 4 Days on Market
South San Francisco avg is 28 days. Early showings often see the most competition.
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3 Bed / 4 Bath / 1,630 sqft on 3,500 sqft Lot
Spec sheet at a glance. See full details below for interior, exterior, and lot features.
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Listed at $1.2M vs City Average $1.1M
$765/sqft compared to South San Francisco avg $800/sqft (-4.3%).
Best fit forActive BuyersSouth San Francisco SearchersMove-Up / Move-In
About This Home
Ideally located near Downtown South San Francisco and the cities thriving biotech and life-sciences corridor, 643 Grand Avenue where space, comfort, and a remarkable garden setting come together in the heart of South San Francisco. 643 Grand Avenue offers a spacious and versatile layout with excellent access to major transportation and employment centers. The home features 3 bedrooms and 4 bathrooms, with a private full bathroom for each bedroom. Additional highlights include high ceilings, abundant natural light, hardwood floors, a full basement with ample storage, and a detached 2-car garage equipped with a 220-volt outlet for EV charging. The home also features a water purification system, tankless water heater, and water softener. The quaint lot includes a freshly manicured organic vegetable garden with sunflowers and offers potential for an ADU. Conveniently located near Downtown South San Francisco, Genentech, Caltrain, US-101, and I-280.
MLS ID #ML82059314, Jill Penna. Listing provided by Christie's International Real Estate Sereno · MLSListings Inc.
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Property Details
Property Type
Single Family Residence
Year Built
1895
Bedrooms
3
Bathrooms
4 Full
Living Area
1,630 sqft
Lot Size
3,500 sqft
Garage
2 Spaces
Price/sqft
$765
County
SanMateo
MLS Number
ML82059314
Status
Active
Stories
N/A
HOA
None
Interior Features
CentralForcedAir
Exterior & Lot
Shingle Roof2-Car Garage0.08 Acres
Location
This HomeActive ListingNew (3 days or less)Price ReducedOpen HouseSold
643 Grand AVE, South San Francisco, CA 94080 · SanMateo County
Market Context
Price Positioning
$Price context: Listed at $765/sqft vs South San Francisco avg $800/sqft (4.3% below).
$Sale-to-list: South San Francisco homes selling at 105.4% of asking.
⏲Velocity: City avg 28 days. This home: 4 days.
🏠Inventory:15 3-bedroom homes currently available in South San Francisco.
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.
643 Grand AVE is located in the OldSouthSFRocca area of South San Francisco, California. This 3-bedroom, 4-bathroom single-family home is listed for $1,248,000. Homes in OldSouthSFRocca average $800 per square foot with an average of 28 days on market, making this one of the most actively watched markets in 94080.
3-Bedroom Homes for Sale in South San Francisco 94080
Browse 3-bedroom single-family home listings in the OldSouthSFRocca area of South San Francisco. Properties in 94080 are currently averaging $800 per square foot with 28 days on market.
What to Expect When Buying in OldSouthSFRocca
The OldSouthSFRocca market in South San Francisco features a mix of single-family home properties ranging from starter homes to luxury estates. Current inventory levels suggest active conditions for buyers in this area.
Listed at $1,248,000 ($765/sqft). South San Francisco avg is $800/sqft, placing this 4.3% below. Comparable recent sales help frame the value.
Listed 4 days (as of August 27, 2026). South San Francisco average is 28 days.
Est. $8,038/mo with 20% down ($249,600) at 6.75%. Includes principal & interest ($6,476), property tax ($1,300), and insurance ($262). HOA: None. Aegis 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 the applicable county average 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.
There are 38 active listings in South San Francisco (15 are 3-bedroom). At $1,248,000 this is positioned against the city average of $1,109,010. Similar homes have sold at 105.4% of asking.
3-bedroom homes in South San Francisco (94080) are currently averaging $800 per square foot. Market activity shows homes spending an average of 28 days on market in this area.
643 Grand AVE in South San Francisco is currently listed at $1,248,000. This 3-bedroom, 4-bathroom single-family home is located in the OldSouthSFRocca area.
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 Aegis Luxury Real Estate are marked with the Internet Data Exchange icon (a stylized house) and detailed information about them includes the names of the listing brokers and listing agents.
Based on information from the MLSListings MLS as of Aug 31, 2026 12:45 PM PT. All data, including all measurements and calculations of area, is obtained from various sources and has not been, and will not be, verified by broker or MLS. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information.
These statistics are generated using information from the MLSListings Inc. multiple listing service, but have not been verified and are not guaranteed. MLSListings Inc. disclaims any responsibility for the accuracy and reliability of these statistics. This information should not be relied upon for real estate transaction decisions.
Data updated every 15 minutes. Visit www.MLSListings.com for more information.
Information provided is for general informational purposes only. Equal Housing Opportunity. If you are currently working with a real estate agent, this is not intended as a solicitation.
Timothy Alston, Broker, DRE# 01328224, Aegis Luxury Real Estate, 10080 N. Wolfe Rd Ste SW3-200, Cupertino CA 95014. (408) 207-4593.
Last updated: Aug 31, 2026 12:45 PM PT | Source: MLSListings Inc.
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