Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$708,320$309 / 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 98How 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 $549,000 on Aug 7, 2017

421 OLIVE CT

BRENTWOOD, CA 94513
4
Beds
3
Baths
2,290 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.
0.11 ac
Lot SizeThe size of the land the home sits on, from county records.
2002
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

$708K
$695K low$721K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$549,000 · Aug 7, 2017

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$7,998 (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.$637,154 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$177,566
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$459,588
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$624,662

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.28
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
50
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
45
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
23
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
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.2003
Lot (acres)The size of the land the home sits on, from county records.0.11
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.Yes

Transaction History(5)

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
Garin Elementary SchoolB+
Elementary · Grades KG–5 · 0.2 mi
M
Edna Hill Middle SchoolB
Middle · Grades 6–8 · 0.3 mi
H
Liberty High SchoolB
High · Grades 9–12 · 0.7 mi

District: Brentwood Union Elementary School District

Neighborhood · ZIP 94513These 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.48
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.83
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.368

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.26%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.8%
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.76,553
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.833 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$129,971
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$155,579
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%

Owner Tools

Do you own this home?
Claim this home

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

421 Olive 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.

  • Costs less per square foot than 87% of homes in Contra Costa County
  • Bigger than 72% of homes in Contra Costa County
  • Has a smaller lot than 81% of homes in Brentwood 94513
  • Newer than 86% of homes in Contra Costa County

What homes are worth in Brentwood 94513

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

This home
$429K$1.4M

This home is worth more than 40% of homes in Brentwood 94513.

How it measures up in Brentwood 94513

The dot is this home. The mark in the middle is the typical home in Brentwood 94513.

Estimated value$708,320
CheaperTypical $750,827Pricier

Pricier than 40% of homes nearby

Price per ft²$309
CheaperTypical $331Pricier

Pricier than 35% of homes nearby

Living area2,290 ft²
SmallerTypical 2,257 ft²Bigger

Bigger than 52% of homes nearby

Lot size0.11 ac
SmallerTypical 0.16 acBigger

Bigger than 19% of homes nearby

Year built2002
OlderTypical 2002Newer

Newer than 53% of homes nearby

How 421 Olive Ct ranks against every home in each area.
MeasureThis homeGarin RanchBrentwood 94513Contra Costa County
Estimated valuepricier than$708,32054% of homes40% of homes46% of homes
Price per ft²pricier than$30941% of homes35% of homes13% of homes
Living areabigger than2,290 ft²63% of homes52% of homes72% of homes
Lot sizebigger than0.11 ac39% of homes19% of homes27% of homes
Year builtnewer than200256% of homes53% of homes86% of homes

About 421 Olive Ct

How much is 421 Olive Ct, Brentwood, CA worth?

The TopHap Estimate for 421 Olive Ct, Brentwood, CA is $708,320 as of Sep 24, 2026. The likely range is $695,211 to $721,429. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 421 Olive Ct, Brentwood, CA last sell?

421 Olive Ct, Brentwood, CA last sold on Aug 7, 2017 for $549,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 421 Olive Ct, Brentwood, CA?

421 Olive Ct, Brentwood, CA has 4 bedrooms, 3 bathrooms, 2,290 square feet of living space and a 0.11-acre lot.

When was 421 Olive Ct, Brentwood, CA built?

421 Olive Ct, Brentwood, CA was built in 2002, making it 24 years old. The building has 2 stories.

What schools serve 421 Olive Ct, Brentwood, CA?

421 Olive Ct, Brentwood, CA is assigned to Garin Elementary School (elementary), rated B+; Edna Hill Middle School (middle), rated B; Liberty High School (high), rated B. All sit in Brentwood Union Elementary School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 421 Olive Ct, Brentwood, CA compare to other homes in Brentwood 94513?

Among the 21,449 homes in Brentwood 94513, it is worth more than 40% of them ($708,320 against a typical $750,827), its price per square foot is higher than 35% of them ($309 against a typical $331), it is bigger than 52% of them (2,290 ft² against a typical 2,257 ft²), its lot is bigger than 19% of them (0.11 ac against a typical 0.16 ac) and it is newer than 53% of them (2002 against a typical 2002). Measured against all of Contra Costa County, it is worth more than 46% 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 421 Olive Ct, Brentwood, CA?

The 2025 property tax bill for 421 Olive Ct, Brentwood, CA was $7,998. The county assessed it at $637,154.

More homes on Olive Ct

Closest homes

More homes in Brentwood 94513

Assigned schools

Explore the area

See this home in context

Open 421 Olive Ct on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map