Listed 52 days ago · June 12, 2026 | MLS# ML82050965
$992/sqft +12% vs Foster City avg
What this means: Priced above the Foster City per-sqft average. Compare to recent sales below for context.
Est. $17,140/moP&I $13,906 · Tax $2,792 · Insurance $262 · HOA $180Assumes 20% down ($536,000) 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 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.
Active listing in Foster City, Santa Clara County. Convenient access to schools, parks, and Bay Area employment centers.
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4 Bed / 3 Bath / 2,700 sqft on 5,368 sqft Lot
Spec sheet at a glance. See full details below for interior, exterior, and lot features.
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Listed at $2.7M vs City Average $1.6M
$992/sqft compared to Foster City avg $883/sqft (+12.4%).
Best fit forActive BuyersFoster City SearchersMove-Up / Move-In
About This Home
Welcome to this spacious Sea Colony residence offering approximately 2,700 square feet of thoughtfully designed living space in one of Foster Citys most desirable neighborhoods. Situated on a premium corner cul-de-sac lot, this expansive home features 4 bedrooms, 3 bathrooms, formal living and dining rooms, and a spacious family room ideal for everyday living and entertaining. The functional floor plan includes a convenient first-floor office/den, perfect for todays work-from-home lifestyle. The granite-appointed kitchen opens seamlessly to the family room, creating a warm and inviting gathering space. Upstairs, four generously sized bedrooms provide comfort and privacy for the entire household. Residents enjoy access to Sea Colony amenities including a community pool, spa, clubhouse, tennis courts, and playground. Conveniently located near parks, shopping, dining, top commuter routes, and Foster Citys scenic waterfront trails. A rare opportunity to own one of the largest floor plans in the community.
MLS ID #ML82050965, Mary Bee. Listing provided by Intero Real Estate Services · MLSListings Inc.
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Property Details
Property Type
Single Family Residence
Year Built
1979
Bedrooms
4
Bathrooms
3 Full
Living Area
2,700 sqft
Lot Size
5,368 sqft
Garage
2 Spaces
Price/sqft
$992
County
SanMateo
MLS Number
ML82050965
Status
Active
Stories
N/A
HOA
$180/mo
Interior Features
CentralForcedAir
Exterior & Lot
Shingle Roof2-Car Garage0.12 AcresPool
Location
This HomeActive ListingNew (3 days or less)Price ReducedOpen HouseSold
623 Cornwallis LN, Foster City, CA 94404 · SanMateo County
Market Context
Price Positioning
$Price context: Listed at $992/sqft vs Foster City avg $883/sqft (+12.4% above).
$Sale-to-list: Foster City homes selling at 100.9% of asking.
⏲Velocity: City avg 30 days. This home: 52 days.
🏠Inventory:6 4-bedroom homes currently available in Foster City.
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.
623 Cornwallis LN is located in the FCNbrhood7SeaColonyEtc area of Foster City, California. This 4-bedroom, 3-bathroom single-family home is listed for $2,680,000. Homes in FCNbrhood7SeaColonyEtc average $883 per square foot with an average of 30 days on market, making this one of the most actively watched markets in 94404.
4-Bedroom Homes for Sale in Foster City 94404
Browse 4-bedroom single-family home listings in the FCNbrhood7SeaColonyEtc area of Foster City. Properties in 94404 are currently averaging $883 per square foot with 30 days on market.
What to Expect When Buying in FCNbrhood7SeaColonyEtc
The FCNbrhood7SeaColonyEtc market in Foster City 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 $2,680,000 ($992/sqft). Foster City avg is $883/sqft, placing this +12.4% above. Comparable recent sales help frame the value.
Listed 52 days (as of June 12, 2026). Foster City average is 30 days.
Est. $17,140/mo with 20% down ($536,000) at 6.75%. Includes principal & interest ($13,906), property tax ($2,792), and insurance ($262). HOA: $180/mo. 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 37 active listings in Foster City (6 are 4-bedroom). At $2,680,000 this is positioned against the city average of $1,564,167. Similar homes have sold at 100.9% of asking.
4-bedroom homes in Foster City (94404) are currently averaging $883 per square foot. Market activity shows homes spending an average of 30 days on market in this area.
623 Cornwallis LN in Foster City is currently listed at $2,680,000. This 4-bedroom, 3-bathroom single-family home is located in the FCNbrhood7SeaColonyEtc 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 3, 2026 4:00 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 3, 2026 4:00 PM PT | Source: MLSListings Inc.
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623 Cornwallis LN$2,680,0004 bd · 3 ba · 2,700 sqft
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