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Single Family ResidenceResidential
$1,766,217$699 / 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 94How 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 $999,000 on Nov 27, 2017

21145 CASTLEROCK RD

YORBA LINDA, CA 92886
4
Beds
2.5
Baths
2,528 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.
0.63 ac
Lot SizeThe size of the land the home sits on, from county records.
1985
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.
3
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$1.8M
$1.7M low$1.9M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$999,000 · Nov 27, 2017

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$13,949 (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.$1,241,221 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$743,925
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$497,296
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$1,216,884

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.37
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
82
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
41
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
26
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
39
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
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
CountyORANGE
Lot (acres)The size of the land the home sits on, from county records.0.63
CoolingThe type of cooling or air conditioning in the home.Central
FireplaceWhether the home has a fireplace, and what kind.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.Pool W/Hot Tub/Spa

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(1)

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

H
Yorba Linda High SchoolA
High · Grades 9–12 · 1.5 mi
E
Fairmont Elementary SchoolA+
Elementary · Grades KG–6 · 2.0 mi
M
Orange County School of Computer Science at Bernardo YorbaB+
Middle · Grades 6–8 · 2.0 mi

District: Placentia-Yorba Linda Unified School District

Neighborhood · ZIP 92886These 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.50
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.107
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.432

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.34%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.0%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.2%
PopulationHow many people live in this area.48,885
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,397 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$136,010
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$170,744
Average tempThe average temperature here across a full year.64°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.75%

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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

21145 Castlerock 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 81% of homes in Orange County
  • Costs more per square foot than 73% of homes in Yorba Linda 92886
  • Bigger than 79% of homes in Orange County
  • Has a bigger lot than 98% of homes in Orange County
  • Newer than 67% of homes in Orange County

What homes are worth in Yorba Linda 92886

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

This home
$572K$3.7M

This home is worth more than 74% of homes in Yorba Linda 92886.

How it measures up in Yorba Linda 92886

The dot is this home. The mark in the middle is the typical home in Yorba Linda 92886.

Estimated value$1,766,217
CheaperTypical $1,359,118Pricier

Pricier than 74% of homes nearby

Price per ft²$699
CheaperTypical $639Pricier

Pricier than 73% of homes nearby

Living area2,528 ft²
SmallerTypical 2,176 ft²Bigger

Bigger than 66% of homes nearby

Lot size0.63 ac
SmallerTypical 0.21 acBigger

Bigger than 95% of homes nearby

Year built1985
OlderTypical 1978Newer

Newer than 65% of homes nearby

How 21145 Castlerock Rd ranks against every home in each area.
MeasureThis homeYorba Linda 92886Orange County
Estimated valuepricier than$1,766,21774% of homes81% of homes
Price per ft²pricier than$69973% of homes60% of homes
Living areabigger than2,528 ft²66% of homes79% of homes
Lot sizebigger than0.63 ac95% of homes98% of homes
Year builtnewer than198565% of homes67% of homes

About 21145 Castlerock Rd

How much is 21145 Castlerock Rd, Yorba Linda, CA worth?

The TopHap Estimate for 21145 Castlerock Rd, Yorba Linda, CA is $1,766,217 as of Sep 24, 2026. The likely range is $1,665,597 to $1,866,837. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21145 Castlerock Rd, Yorba Linda, CA last sell?

21145 Castlerock Rd, Yorba Linda, CA last sold on Nov 27, 2017 for $999,000, according to the county's recorded deed. TopHap holds 6 recorded sales for this parcel.

How big is 21145 Castlerock Rd, Yorba Linda, CA?

21145 Castlerock Rd, Yorba Linda, CA has 4 bedrooms, 2.5 bathrooms, 2,528 square feet of living space and a 0.63-acre lot.

When was 21145 Castlerock Rd, Yorba Linda, CA built?

21145 Castlerock Rd, Yorba Linda, CA was built in 1985, making it 41 years old. The building has 2 stories.

What schools serve 21145 Castlerock Rd, Yorba Linda, CA?

21145 Castlerock Rd, Yorba Linda, CA is assigned to Yorba Linda High School (high), rated A; Fairmont Elementary School (elementary), rated A+; Orange County School of Computer Science at Bernardo Yorba (middle), rated B+. All sit in Placentia-Yorba Linda Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21145 Castlerock Rd, Yorba Linda, CA compare to other homes in Yorba Linda 92886?

Among the 16,669 homes in Yorba Linda 92886, it is worth more than 74% of them ($1,766,217 against a typical $1,359,118), its price per square foot is higher than 73% of them ($699 against a typical $639), it is bigger than 66% of them (2,528 ft² against a typical 2,176 ft²), its lot is bigger than 95% of them (0.63 ac against a typical 0.21 ac) and it is newer than 65% of them (1985 against a typical 1978). Measured against all of Orange County, it is worth more than 81% 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 21145 Castlerock Rd, Yorba Linda, CA?

The 2025 property tax bill for 21145 Castlerock Rd, Yorba Linda, CA was $13,949. The county assessed it at $1,241,221.

More homes on Castlerock Rd

Closest homes

More homes in Yorba Linda 92886

Assigned schools

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