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Single Family ResidenceResidential
$1,151,775$605 / 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 93How 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 $938,000 on Mar 8, 2021

521 UNION PL

BREA, CA 92821
4
Beds
2
Baths
1,903 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.
0.17 ac
Lot SizeThe size of the land the home sits on, from county records.
1950
Year BuiltThe year the home was originally built, according to county records.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$1.2M
$1.1M low$1.2M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$938,000 · Mar 8, 2021

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$11,887 (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.$1,035,626 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$853,010
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$182,616
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$1,015,320

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.0.17
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(8)

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
Laurel Elementary Magnet School of Innovation and Career ExplrB+
Elementary · Grades KG–6 · 0.2 mi
M
Brea Junior High SchoolA-
Middle · Grades 7–8 · 0.8 mi
H
Brea Olinda High SchoolA-
High · Grades 9–12 · 1.7 mi

District: Brea-Olinda Unified School District

Neighborhood · ZIP 92821These 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.70
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.105
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.411

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.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.29%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.4%
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.45,720
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,381 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$111,359
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$139,524
Average tempThe average temperature here across a full year.64°F
Annual precipHow much rain and melted snow falls here in a typical year.17 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.74%

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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

521 Union Pl 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 more per square foot than 68% of homes in Brea 92821
  • Has a bigger lot than 65% of homes in Orange County
  • Older than 96% of homes in Orange County

What homes are worth in Brea 92821

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

This home
$557K$2.5M

This home is worth more than 63% of homes in Brea 92821.

How it measures up in Brea 92821

The dot is this home. The mark in the middle is the typical home in Brea 92821.

Estimated value$1,151,775
CheaperTypical $1,069,015Pricier

Pricier than 63% of homes nearby

Price per ft²$605
CheaperTypical $563Pricier

Pricier than 68% of homes nearby

Living area1,903 ft²
SmallerTypical 1,890 ft²Bigger

Bigger than 51% of homes nearby

Lot size0.17 ac
SmallerTypical 0.16 acBigger

Bigger than 59% of homes nearby

Year built1950
OlderTypical 1975Newer

Newer than 6% of homes nearby

How 521 Union Pl ranks against every home in each area.
MeasureThis homeBrea 92821Orange County
Estimated valuepricier than$1,151,77563% of homes52% of homes
Price per ft²pricier than$60568% of homes35% of homes
Living areabigger than1,903 ft²51% of homes58% of homes
Lot sizebigger than0.17 ac59% of homes65% of homes
Year builtnewer than19506% of homes4% of homes

About 521 Union Pl

How much is 521 Union Pl, Brea, CA worth?

The TopHap Estimate for 521 Union Pl, Brea, CA is $1,151,775 as of Oct 21, 2026. The likely range is $1,066,834 to $1,236,716. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 521 Union Pl, Brea, CA last sell?

521 Union Pl, Brea, CA last sold on Mar 8, 2021 for $938,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 521 Union Pl, Brea, CA?

521 Union Pl, Brea, CA has 4 bedrooms, 2 bathrooms, 1,903 square feet of living space and a 0.17-acre lot.

When was 521 Union Pl, Brea, CA built?

521 Union Pl, Brea, CA was built in 1950, making it 76 years old.

What schools serve 521 Union Pl, Brea, CA?

521 Union Pl, Brea, CA is assigned to Laurel Elementary Magnet School of Innovation and Career Explr (elementary), rated B+; Brea Junior High School (middle), rated A-; Brea Olinda High School (high), rated A-. All sit in Brea-Olinda Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 521 Union Pl, Brea, CA compare to other homes in Brea 92821?

Among the 10,782 homes in Brea 92821, it is worth more than 63% of them ($1,151,775 against a typical $1,069,015), its price per square foot is higher than 68% of them ($605 against a typical $563), it is bigger than 51% of them (1,903 ft² against a typical 1,890 ft²), its lot is bigger than 59% of them (0.17 ac against a typical 0.16 ac) and it is newer than 6% of them (1950 against a typical 1975). Measured against all of Orange County, it is worth more than 52% 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 521 Union Pl, Brea, CA?

The 2025 property tax bill for 521 Union Pl, Brea, CA was $11,887. The county assessed it at $1,035,626.

More homes on Union Pl

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Assigned schools

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