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Single Family ResidenceResidential
$4,821,304$1,883 / ft²
TopHap EstimateOur estimate of what this home would sell for today, based on nearby sales, the home's size and features, and local price trends. It is a starting point, not an appraisal.· confidence 93How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Sep 24, 2026
Last sold for $1,575,000 on Jan 30, 2003

1 SOUTHGATE ST

ATHERTON, CA 94027
3
Beds
2.5
Baths
2,560 ft²
Living AreaTotal finished area of the structures, from county records. Some counties include shared space like hallways or a building gym, so it may not match a listing.
0.15 ac
Lot SizeThe size of the land the home sits on, from county records.
1922
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
7
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$4.8M
$4.5M low$5.2M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$1,575,000 · Jan 30, 2003

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$26,052 (2025)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$2,326,738 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$1,163,369
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$1,163,369
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$2,281,116
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$2,522,250

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
StyleThe architectural style of the home, such as ranch or colonial.Traditional/Old
CountySAN MATEO
Lot (acres)The size of the land the home sits on, from county records.0.15
HeatingThe type of heating system in the home.Central
CoolingThe type of cooling or air conditioning in the home.Central
FireplaceWhether the home has a fireplace, and what kind.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(6)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Garfield Elementary SchoolF
Elementary · Grades KG–8 · 0.6 mi
H
Menlo-Atherton High SchoolA
High · Grades 9–12 · 1.7 mi

District: Redwood City Elementary School District

Neighborhood · ZIP 94027These are comparison scores, not percentages. 100 equals the national average, so 150 means about 50% above average.

CrimeLocal crime compared with the rest of the country, where 100 is average. It reflects things like population density, income, and how crime gets reported.98
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.93
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.511

Index scale: 100 = US average (tick). Lower is better.

Homes occupiedThe share of homes here that someone lives in. The rest sit empty, including vacation and for-sale homes.87%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.28%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.5%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.9%
PopulationHow many people live in this area.7,126
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,411 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$294,375
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$482,221
Average tempThe average temperature here across a full year.59°F
Annual precipHow much rain and melted snow falls here in a typical year.20 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.66%

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Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.

How this home compares

1 Southgate St measured against every home in its neighborhood, its ZIP code and its county, using county assessor records refreshed nightly. A home can stand out in one of those areas and look ordinary in another, because each one holds a different mix of homes.

  • Worth more than 95% of homes in San Mateo County
  • Costs more per square foot than 96% of homes in San Mateo County
  • Smaller than 85% of homes in West Atherton
  • Among the smallest lots in West Atherton
  • Older than 97% of homes in San Mateo County

What homes are worth in Atherton 94027

Each bar is how many homes fall in that price range. The marker is this home.

This home
$2.6M$10M

This home is worth more than 13% of homes in Atherton 94027.

How it measures up in Atherton 94027

The dot is this home. The mark in the middle is the typical home in Atherton 94027.

Estimated value$4,821,304
CheaperTypical $9,019,886Pricier

Pricier than 13% of homes nearby

Price per ft²$1883
CheaperTypical $1977Pricier

Pricier than 44% of homes nearby

Living area2,560 ft²
SmallerTypical 3,910 ft²Bigger

Bigger than 20% of homes nearby

Lot size0.15 ac
SmallerTypical 1 acBigger

Bigger than 3% of homes nearby

Year built1922
OlderTypical 1958Newer

Newer than 4% of homes nearby

How 1 Southgate St ranks against every home in each area.
MeasureThis homeWest AthertonAtherton 94027San Mateo County
Estimated valuepricier than$4,821,3046% of homes13% of homes95% of homes
Price per ft²pricier than$188342% of homes44% of homes96% of homes
Living areabigger than2,560 ft²15% of homes20% of homes83% of homes
Lot sizebigger than0.15 acalmost no homes3% of homes57% of homes
Year builtnewer than19224% of homes4% of homes3% of homes

About 1 Southgate St

How much is 1 Southgate St, Atherton, CA worth?

The TopHap Estimate for 1 Southgate St, Atherton, CA is $4,821,304 as of Sep 24, 2026. The likely range is $4,473,722 to $5,168,886. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 1 Southgate St, Atherton, CA last sell?

1 Southgate St, Atherton, CA last sold on Jan 30, 2003 for $1,575,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 1 Southgate St, Atherton, CA?

1 Southgate St, Atherton, CA has 3 bedrooms, 2.5 bathrooms, 2,560 square feet of living space and a 0.15-acre lot.

When was 1 Southgate St, Atherton, CA built?

1 Southgate St, Atherton, CA was built in 1922, making it 104 years old. It is a traditional/old home. The building has 1 story.

What schools serve 1 Southgate St, Atherton, CA?

1 Southgate St, Atherton, CA is assigned to Garfield Elementary School (elementary), rated F; Menlo-Atherton High School (high), rated A. All sit in Redwood City Elementary School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 1 Southgate St, Atherton, CA compare to other homes in Atherton 94027?

Among the 2,583 homes in Atherton 94027, it is worth more than 13% of them ($4,821,304 against a typical $9,019,886), its price per square foot is higher than 44% of them ($1883 against a typical $1977), it is bigger than 20% of them (2,560 ft² against a typical 3,910 ft²), its lot is bigger than 3% of them (0.15 ac against a typical 1 ac) and it is newer than 4% of them (1922 against a typical 1958). Measured against all of San Mateo County, it is worth more than 95% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 1 Southgate St, Atherton, CA?

The 2025 property tax bill for 1 Southgate St, Atherton, CA was $26,052. The county assessed it at $2,326,738.

More homes on Southgate St

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Assigned schools

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