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Single Family ResidenceResidential
$667,799$310 / 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 97How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Oct 21, 2026
Last sold for $372,500 on Dec 18, 2003

4842 GREENCASTLE WAY

ANTIOCH, CA 94531
4
Beds
3
Baths
2,152 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.
0.19 ac
Lot SizeThe size of the land the home sits on, from county records.
2003
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
9
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

$668K
$645K low$690K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$372,500 · Dec 18, 2003

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,639 (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.$539,755 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$152,266
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$387,489
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$529,173

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.27
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
41
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
44
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
25
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
25
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.

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
CountyCONTRA COSTA
Lot (acres)The size of the land the home sits on, from county records.0.19
CoolingThe type of cooling or air conditioning in the home.Central
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Attached
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(1)

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
Pioneer Elementary SchoolB+
Elementary · Grades KG–5 · 1.2 mi
H
Heritage High SchoolA-
High · Grades 9–12 · 3.2 mi
M
J. Douglas Adams Middle SchoolA-
Middle · Grades 6–8 · 3.4 mi

District: Brentwood Union Elementary School District

Neighborhood · ZIP 94531These 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.41
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.78
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.373

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.98%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.22%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.1%
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.44,329
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,964 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$117,415
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$146,230
Average tempThe average temperature here across a full year.60°F
Annual precipHow much rain and melted snow falls here in a typical year.16 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

4842 Greencastle Way 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.

  • Costs less per square foot than 86% of homes in Contra Costa County
  • Bigger than 67% of homes in Contra Costa County
  • Has a bigger lot than 77% of homes in Antioch 94531
  • Newer than 88% of homes in Contra Costa County

What homes are worth in Antioch 94531

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

This home
$401K$896K

This home is worth more than 60% of homes in Antioch 94531.

How it measures up in Antioch 94531

The dot is this home. The mark in the middle is the typical home in Antioch 94531.

Estimated value$667,799
CheaperTypical $639,304Pricier

Pricier than 60% of homes nearby

Price per ft²$310
CheaperTypical $296Pricier

Pricier than 61% of homes nearby

Living area2,152 ft²
SmallerTypical 2,189 ft²Bigger

Bigger than 47% of homes nearby

Lot size0.19 ac
SmallerTypical 0.15 acBigger

Bigger than 77% of homes nearby

Year built2003
OlderTypical 1997Newer

Newer than 76% of homes nearby

How 4842 Greencastle Way ranks against every home in each area.
MeasureThis homeAntioch 94531Contra Costa County
Estimated valuepricier than$667,79960% of homes41% of homes
Price per ft²pricier than$31061% of homes14% of homes
Living areabigger than2,152 ft²47% of homes67% of homes
Lot sizebigger than0.19 ac77% of homes65% of homes
Year builtnewer than200376% of homes88% of homes

About 4842 Greencastle Way

How much is 4842 Greencastle Way, Antioch, CA worth?

The TopHap Estimate for 4842 Greencastle Way, Antioch, CA is $667,799 as of Oct 21, 2026. The likely range is $645,168 to $690,430. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 4842 Greencastle Way, Antioch, CA last sell?

4842 Greencastle Way, Antioch, CA last sold on Dec 18, 2003 for $372,500, according to the county's recorded deed.

How big is 4842 Greencastle Way, Antioch, CA?

4842 Greencastle Way, Antioch, CA has 4 bedrooms, 3 bathrooms, 2,152 square feet of living space and a 0.19-acre lot.

When was 4842 Greencastle Way, Antioch, CA built?

4842 Greencastle Way, Antioch, CA was built in 2003, making it 23 years old. The building has 1 story.

What schools serve 4842 Greencastle Way, Antioch, CA?

4842 Greencastle Way, Antioch, CA is assigned to Pioneer Elementary School (elementary), rated B+; Heritage High School (high), rated A-; J. Douglas Adams Middle School (middle), rated A-. All sit in Brentwood Union Elementary School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 4842 Greencastle Way, Antioch, CA compare to other homes in Antioch 94531?

Among the 14,939 homes in Antioch 94531, it is worth more than 60% of them ($667,799 against a typical $639,304), its price per square foot is higher than 61% of them ($310 against a typical $296), it is bigger than 47% of them (2,152 ft² against a typical 2,189 ft²), its lot is bigger than 77% of them (0.19 ac against a typical 0.15 ac) and it is newer than 76% of them (2003 against a typical 1997). Measured against all of Contra Costa County, it is worth more than 41% 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 4842 Greencastle Way, Antioch, CA?

The 2025 property tax bill for 4842 Greencastle Way, Antioch, CA was $6,639. The county assessed it at $539,755.

More homes on Greencastle Way

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