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Single Family ResidenceResidential
$9,999,999$1,342 / 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 77How 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 $7,250,000 on Jun 18, 2010

66 ACACIA DR

ATHERTON, CA 94027
4
Beds
5.5
Baths
7,450 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.
0.67 ac
Lot SizeThe size of the land the home sits on, from county records.
2009
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
15
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$10M
$10M low$10M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$7,250,000 · Jun 18, 2010

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$105,630 (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.$9,596,873 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$4,772,817
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$4,824,056
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$9,408,701
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$7,582,050

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountySAN MATEO
Lot (acres)The size of the land the home sits on, from county records.0.67
HeatingThe type of heating system in the home.Central
CoolingThe type of cooling or air conditioning in the home.Central
PoolWhether the property has a pool, and what kind, such as in-ground.Yes

Transaction History(8)

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
Encinal Elementary SchoolA+
Elementary · Grades KG–5 · 0.4 mi
H
Menlo-Atherton High SchoolA
High · Grades 9–12 · 0.5 mi
M
Hillview Middle SchoolA+
Middle · Grades 6–8 · 2.2 mi

District: Menlo Park 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

66 Acacia Dr 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.

  • Among the most valuable homes in Lindenwood
  • Costs less per square foot than 90% of homes in Lindenwood
  • Among the largest homes in San Mateo County
  • Among the smallest lots in Lindenwood
  • Newer 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
$2.4M$10M

This home is worth more than almost all 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$9,999,999
CheaperTypical $8,987,645Pricier

Pricier than almost all homes nearby

Price per ft²$1342
CheaperTypical $1985Pricier

Pricier than 14% of homes nearby

Living area7,450 ft²
SmallerTypical 3,940 ft²Bigger

Bigger than 84% of homes nearby

Lot size0.67 ac
SmallerTypical 1 acBigger

Bigger than 21% of homes nearby

Year built2009
OlderTypical 1958Newer

Newer than 87% of homes nearby

How 66 Acacia Dr ranks against every home in each area.
MeasureThis homeLindenwoodAtherton 94027San Mateo County
Estimated valuepricier than$9,999,999almost all homesalmost all homesalmost all homes
Price per ft²pricier than$134210% of homes14% of homes80% of homes
Living areabigger than7,450 ft²90% of homes84% of homesalmost all homes
Lot sizebigger than0.67 acalmost no homes21% of homes86% of homes
Year builtnewer than200988% of homes87% of homes97% of homes

About 66 Acacia Dr

How much is 66 Acacia Dr, Atherton, CA worth?

The TopHap Estimate for 66 Acacia Dr, Atherton, CA is $9,999,999 as of Sep 24, 2026. The likely range is $9,999,999 to $9,999,999. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 66 Acacia Dr, Atherton, CA last sell?

66 Acacia Dr, Atherton, CA last sold on Jun 18, 2010 for $7,250,000, according to the county's recorded deed.

How big is 66 Acacia Dr, Atherton, CA?

66 Acacia Dr, Atherton, CA has 4 bedrooms, 5.5 bathrooms, 7,450 square feet of living space and a 0.67-acre lot.

When was 66 Acacia Dr, Atherton, CA built?

66 Acacia Dr, Atherton, CA was built in 2009, making it 17 years old. The building has 2 stories.

What schools serve 66 Acacia Dr, Atherton, CA?

66 Acacia Dr, Atherton, CA is assigned to Encinal Elementary School (elementary), rated A+; Menlo-Atherton High School (high), rated A; Hillview Middle School (middle), rated A+. All sit in Menlo Park City Elementary School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 66 Acacia Dr, Atherton, CA compare to other homes in Atherton 94027?

Among the 2,583 homes in Atherton 94027, it is worth more than almost all of them ($9,999,999 against a typical $8,987,645), its price per square foot is higher than 14% of them ($1342 against a typical $1985), it is bigger than 84% of them (7,450 ft² against a typical 3,940 ft²), its lot is bigger than 21% of them (0.67 ac against a typical 1 ac) and it is newer than 87% of them (2009 against a typical 1958). Measured against all of San Mateo County, it is worth more than almost all 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 66 Acacia Dr, Atherton, CA?

The 2025 property tax bill for 66 Acacia Dr, Atherton, CA was $105,630. The county assessed it at $9,596,873.

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