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Single Family ResidenceResidential
$733,018$292 / 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 $793,000 on Nov 17, 2023

817 HARDCASTLE RANCH RD

OAKLEY, CA 94561
4
Beds
3
Baths
2,508 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.
3,301 ft²
Lot SizeThe size of the land the home sits on, from county records.
2023
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
8
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

$733K
$705K low$761K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$793,000 · Nov 17, 2023

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$12,915 (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.$793,721 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$182,070
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$611,651
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$778,158

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.33
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
73
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
43
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
24
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.0.08
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
Gehringer Elementary SchoolB
Elementary · Grades KG–5 · 0.5 mi
M
Delta Vista Middle SchoolD
Middle · Grades 6–8 · 1.0 mi
H
Freedom High SchoolC
High · Grades 9–12 · 1.7 mi

District: Oakley Union Elementary School District

Neighborhood · ZIP 94561These 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.61
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.81
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.345

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.18%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.4%
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.43,010
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,463 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$115,815
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$135,670
Average tempThe average temperature here across a full year.60°F
Annual precipHow much rain and melted snow falls here in a typical year.14 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

817 Hardcastle Ranch Rd 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 75% of homes in Oakley 94561
  • Costs less per square foot than 90% of homes in Contra Costa County
  • Bigger than 78% of homes in Contra Costa County
  • Has a smaller lot than 97% of homes in Oakley 94561
  • Among the newest homes in Contra Costa County

What homes are worth in Oakley 94561

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

This home
$418K$1.1M

This home is worth more than 75% of homes in Oakley 94561.

How it measures up in Oakley 94561

The dot is this home. The mark in the middle is the typical home in Oakley 94561.

Estimated value$733,018
CheaperTypical $636,867Pricier

Pricier than 75% of homes nearby

Price per ft²$292
CheaperTypical $335Pricier

Pricier than 29% of homes nearby

Living area2,508 ft²
SmallerTypical 1,947 ft²Bigger

Bigger than 73% of homes nearby

Lot size3,301 ft²
SmallerTypical 0.15 acBigger

Bigger than 3% of homes nearby

Year built2023
OlderTypical 1995Newer

Newer than almost all homes nearby

How 817 Hardcastle Ranch Rd ranks against every home in each area.
MeasureThis homeOakley 94561Contra Costa County
Estimated valuepricier than$733,01875% of homes49% of homes
Price per ft²pricier than$29229% of homes10% of homes
Living areabigger than2,508 ft²73% of homes78% of homes
Lot sizebigger than3,301 ft²3% of homes17% of homes
Year builtnewer than2023almost all homesalmost all homes

About 817 Hardcastle Ranch Rd

How much is 817 Hardcastle Ranch Rd, Oakley, CA worth?

The TopHap Estimate for 817 Hardcastle Ranch Rd, Oakley, CA is $733,018 as of Aug 30, 2026. The likely range is $705,447 to $760,589. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 817 Hardcastle Ranch Rd, Oakley, CA last sell?

817 Hardcastle Ranch Rd, Oakley, CA last sold on Nov 17, 2023 for $793,000, according to the county's recorded deed.

How big is 817 Hardcastle Ranch Rd, Oakley, CA?

817 Hardcastle Ranch Rd, Oakley, CA has 4 bedrooms, 3 bathrooms, 2,508 square feet of living space and a 0.08-acre lot.

When was 817 Hardcastle Ranch Rd, Oakley, CA built?

817 Hardcastle Ranch Rd, Oakley, CA was built in 2023, making it 3 years old. The building has 2 stories.

What schools serve 817 Hardcastle Ranch Rd, Oakley, CA?

817 Hardcastle Ranch Rd, Oakley, CA is assigned to Gehringer Elementary School (elementary), rated B; Delta Vista Middle School (middle), rated D; Freedom High School (high), rated C. All sit in Oakley Union Elementary School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 817 Hardcastle Ranch Rd, Oakley, CA compare to other homes in Oakley 94561?

Among the 14,000 homes in Oakley 94561, it is worth more than 75% of them ($733,018 against a typical $636,867), its price per square foot is higher than 29% of them ($292 against a typical $335), it is bigger than 73% of them (2,508 ft² against a typical 1,947 ft²), its lot is bigger than 3% of them (3,301 ft² against a typical 0.15 ac) and it is newer than almost all of them (2023 against a typical 1995). Measured against all of Contra Costa County, it is worth more than 49% 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 817 Hardcastle Ranch Rd, Oakley, CA?

The 2025 property tax bill for 817 Hardcastle Ranch Rd, Oakley, CA was $12,915. The county assessed it at $793,721.

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