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Single Family ResidenceResidential
$5,780,726$796 / 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 Aug 30, 2026
Last sold for $2,395,000 on Jun 24, 1999

12 MARLBOROUGH CT

PIEDMONT, CA 94611
7
Beds
7
Baths
7,258 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.
0.75 ac
Lot SizeThe size of the land the home sits on, from county records.
1935
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
13
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
3
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$5.8M
$5.4M low$6.2M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$2,395,000 · Jun 24, 1999

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$54,263 (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.$3,822,532 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$1,148,859
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$2,680,673
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$3,747,448
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$5,435,280

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.7 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.minimal

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyALAMEDA
Effective Year BuiltAn adjusted build year that accounts for condition and major remodels. A big renovation can make a home count as newer than it is.1937
Lot (acres)The size of the land the home sits on, from county records.0.75
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
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.

M
Piedmont Middle SchoolA-
Middle · Grades 6–8 · 0.9 mi
H
Piedmont High SchoolA
High · Grades 9–12 · 0.9 mi
E
Frank C. Havens Elementary SchoolA
Elementary · Grades KG–5 · 1.0 mi

District: Piedmont City Unified School District

Neighborhood · ZIP 94611These 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.91
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.84
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.584

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.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.37%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.4%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.4%
PopulationHow many people live in this area.39,965
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.5,185 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$165,259
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$221,766
Average tempThe average temperature here across a full year.57°F
Annual precipHow much rain and melted snow falls here in a typical year.26 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.78%

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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

12 Marlborough Ct 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 Alameda County
  • Costs more per square foot than 73% of homes in Alameda County
  • Among the largest homes in Oakland 94611
  • Has a bigger lot than 97% of homes in Oakland 94611
  • Older than 79% of homes in Alameda County

What homes are worth in Oakland 94611

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

This home
$307K$5M

This home is worth more than almost all homes in Oakland 94611.

How it measures up in Oakland 94611

The dot is this home. The mark in the middle is the typical home in Oakland 94611.

Estimated value$5,780,726
CheaperTypical $1,526,558Pricier

Pricier than almost all homes nearby

Price per ft²$796
CheaperTypical $758Pricier

Pricier than 55% of homes nearby

Living area7,258 ft²
SmallerTypical 2,076 ft²Bigger

Bigger than almost all homes nearby

Lot size0.75 ac
SmallerTypical 0.17 acBigger

Bigger than 97% of homes nearby

Year built1935
OlderTypical 1952Newer

Newer than 30% of homes nearby

How 12 Marlborough Ct ranks against every home in each area.
MeasureThis homeOakland 94611Alameda County
Estimated valuepricier than$5,780,726almost all homesalmost all homes
Price per ft²pricier than$79655% of homes73% of homes
Living areabigger than7,258 ft²almost all homesalmost all homes
Lot sizebigger than0.75 ac97% of homes92% of homes
Year builtnewer than193530% of homes21% of homes

About 12 Marlborough Ct

How much is 12 Marlborough Ct, Piedmont, CA worth?

The TopHap Estimate for 12 Marlborough Ct, Piedmont, CA is $5,780,726 as of Aug 30, 2026. The likely range is $5,352,382 to $6,209,070. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 12 Marlborough Ct, Piedmont, CA last sell?

12 Marlborough Ct, Piedmont, CA last sold on Jun 24, 1999 for $2,395,000, according to the county's recorded deed.

How big is 12 Marlborough Ct, Piedmont, CA?

12 Marlborough Ct, Piedmont, CA has 7 bedrooms, 7 bathrooms, 7,258 square feet of living space and a 0.75-acre lot.

When was 12 Marlborough Ct, Piedmont, CA built?

12 Marlborough Ct, Piedmont, CA was built in 1935, making it 91 years old. The building has 2 stories.

What schools serve 12 Marlborough Ct, Piedmont, CA?

12 Marlborough Ct, Piedmont, CA is assigned to Piedmont Middle School (middle), rated A-; Piedmont High School (high), rated A; Frank C. Havens Elementary School (elementary), rated A. All sit in Piedmont City Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 12 Marlborough Ct, Piedmont, CA compare to other homes in Oakland 94611?

Among the 12,683 homes in Oakland 94611, it is worth more than almost all of them ($5,780,726 against a typical $1,526,558), its price per square foot is higher than 55% of them ($796 against a typical $758), it is bigger than almost all of them (7,258 ft² against a typical 2,076 ft²), its lot is bigger than 97% of them (0.75 ac against a typical 0.17 ac) and it is newer than 30% of them (1935 against a typical 1952). Measured against all of Alameda 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 12 Marlborough Ct, Piedmont, CA?

The 2025 property tax bill for 12 Marlborough Ct, Piedmont, CA was $54,263. The county assessed it at $3,822,532.

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