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CondominiumResidential
$385,953$412 / 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 96How 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 $196,500 on Sep 9, 2008

809 DOVER

HERCULES, CA 94547
2
Beds
2
Baths
937 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.
944 ft²
Lot SizeThe size of the land the home sits on, from county records.
1984
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

$386K
$372K low$399K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$196,500 · Sep 9, 2008

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,118 (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.$258,086 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$131,342
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$126,744
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$253,026

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.32
66
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
60
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
36
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.34 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.Condominium
StyleThe architectural style of the home, such as ranch or colonial.Condo/Apartment
CountyCONTRA COSTA
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.1985
Lot (acres)The size of the land the home sits on, from county records.0.02
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
GarageWhether the property has a garage, and details like whether it is attached to the home.Carport (Unspecified)
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(9)

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

Foreclosure Filings(3)

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

E
Rodeo Hills ElementaryC+
Elementary · Grades KG–5 · 0.9 mi
M
Carquinez Middle SchoolC
Middle · Grades 6–8 · 3.0 mi
H
John Swett High SchoolB-
High · Grades 9–12 · 3.1 mi

District: John Swett Unified School District

Neighborhood · ZIP 94547These 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.68
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 100.423

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.97%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.31%
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.1.4%
PopulationHow many people live in this area.26,279
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,342 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$121,348
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$157,708
Average tempThe average temperature here across a full year.58°F
Annual precipHow much rain and melted snow falls here in a typical year.23 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

809 Dover 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 less than 96% of homes in Hercules 94547
  • Costs less per square foot than 76% of homes in Foxboro
  • Smaller than 93% of homes in Hercules 94547
  • Has a smaller lot than 96% of homes in Contra Costa County
  • Older than 68% of homes in Hercules 94547

What homes are worth in Hercules 94547

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

This home
$359K$1.2M

This home is worth more than 4% of homes in Hercules 94547.

How it measures up in Hercules 94547

The dot is this home. The mark in the middle is the typical home in Hercules 94547.

Estimated value$385,953
CheaperTypical $735,115Pricier

Pricier than 4% of homes nearby

Price per ft²$412
CheaperTypical $399Pricier

Pricier than 61% of homes nearby

Living area937 ft²
SmallerTypical 1,798 ft²Bigger

Bigger than 7% of homes nearby

Lot size944 ft²
SmallerTypical 0.12 acBigger

Bigger than 9% of homes nearby

Year built1984
OlderTypical 1988Newer

Newer than 32% of homes nearby

How 809 Dover ranks against every home in each area.
MeasureThis homeFoxboroHercules 94547Contra Costa County
Estimated valuepricier than$385,95317% of homes4% of homes6% of homes
Price per ft²pricier than$41224% of homes61% of homes39% of homes
Living areabigger than937 ft²24% of homes7% of homes7% of homes
Lot sizebigger than944 ft²20% of homes9% of homes4% of homes
Year builtnewer than198435% of homes32% of homes61% of homes

About 809 Dover

How much is 809 Dover, Hercules, CA worth?

The TopHap Estimate for 809 Dover, Hercules, CA is $385,953 as of Aug 30, 2026. The likely range is $372,408 to $399,498. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 809 Dover, Hercules, CA last sell?

809 Dover, Hercules, CA last sold on Sep 9, 2008 for $196,500, according to the county's recorded deed. TopHap holds 7 recorded sales for this parcel.

How big is 809 Dover, Hercules, CA?

809 Dover, Hercules, CA has 2 bedrooms, 2 bathrooms, 937 square feet of living space and a 0.02-acre lot.

When was 809 Dover, Hercules, CA built?

809 Dover, Hercules, CA was built in 1984, making it 42 years old. It is a condo/apartment home. The building has 1 story.

What schools serve 809 Dover, Hercules, CA?

809 Dover, Hercules, CA is assigned to Rodeo Hills Elementary (elementary), rated C+; Carquinez Middle School (middle), rated C; John Swett High School (high), rated B-. All sit in John Swett Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 809 Dover, Hercules, CA compare to other homes in Hercules 94547?

Among the 8,379 homes in Hercules 94547, it is worth more than 4% of them ($385,953 against a typical $735,115), its price per square foot is higher than 61% of them ($412 against a typical $399), it is bigger than 7% of them (937 ft² against a typical 1,798 ft²), its lot is bigger than 9% of them (944 ft² against a typical 0.12 ac) and it is newer than 32% of them (1984 against a typical 1988). Measured against all of Contra Costa County, it is worth more than 6% 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 809 Dover, Hercules, CA?

The 2025 property tax bill for 809 Dover, Hercules, CA was $4,118. The county assessed it at $258,086.

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