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Single Family ResidenceResidential
$952,284$648 / 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 95How 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

427 SIEVERS AVE

BREA, CA 92821
2
Beds
1
Baths
1,469 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.
0.26 ac
Lot SizeThe size of the land the home sits on, from county records.
1912
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
6
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

$952K
$905K low$1000K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,245 (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.$165,963 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$129,084
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$36,879
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$162,709

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.115 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
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.0.26
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Composition Shingle
HeatingThe type of heating system in the home.Floor/Wall Furnace
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(3)

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
Arovista Elementary SchoolB
Elementary · Grades KG–6 · 0.4 mi
M
Brea Junior High SchoolA
Middle · Grades 7–8 · 0.9 mi
H
Brea Olinda High SchoolA+
High · Grades 9–12 · 2.0 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

427 Sievers Ave 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 less than 67% of homes in Brea 92821
  • Costs more per square foot than 83% of homes in Brea 92821
  • Smaller than 75% of homes in Brea 92821
  • Has a bigger lot than 92% of homes in Brea 92821
  • Among the oldest homes in Brea 92821

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
$571K$2.5M

This home is worth more than 33% 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$952,284
CheaperTypical $1,068,208Pricier

Pricier than 33% of homes nearby

Price per ft²$648
CheaperTypical $560Pricier

Pricier than 83% of homes nearby

Living area1,469 ft²
SmallerTypical 1,882 ft²Bigger

Bigger than 25% of homes nearby

Lot size0.26 ac
SmallerTypical 0.16 acBigger

Bigger than 92% of homes nearby

Year built1912
OlderTypical 1975Newer

Older than almost all homes nearby

How 427 Sievers Ave ranks against every home in each area.
MeasureThis homeBrea 92821Orange County
Estimated valuepricier than$952,28433% of homes35% of homes
Price per ft²pricier than$64883% of homes47% of homes
Living areabigger than1,469 ft²25% of homes35% of homes
Lot sizebigger than0.26 ac92% of homes90% of homes
Year builtnewer than1912almost no homesalmost no homes

About 427 Sievers Ave

How much is 427 Sievers Ave, Brea, CA worth?

The TopHap Estimate for 427 Sievers Ave, Brea, CA is $952,284 as of Sep 24, 2026. The likely range is $904,634 to $999,934. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 427 Sievers Ave, Brea, CA last sell?

427 Sievers Ave, Brea, CA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 427 Sievers Ave, Brea, CA?

427 Sievers Ave, Brea, CA has 2 bedrooms, 1 bathrooms, 1,469 square feet of living space and a 0.26-acre lot.

When was 427 Sievers Ave, Brea, CA built?

427 Sievers Ave, Brea, CA was built in 1912, making it 114 years old. The building has 1 story.

What schools serve 427 Sievers Ave, Brea, CA?

427 Sievers Ave, Brea, CA is assigned to Arovista Elementary School (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 427 Sievers Ave, Brea, CA compare to other homes in Brea 92821?

Among the 10,781 homes in Brea 92821, it is worth more than 33% of them ($952,284 against a typical $1,068,208), its price per square foot is higher than 83% of them ($648 against a typical $560), it is bigger than 25% of them (1,469 ft² against a typical 1,882 ft²), its lot is bigger than 92% of them (0.26 ac against a typical 0.16 ac) and it is newer than almost none of them (1912 against a typical 1975). Measured against all of Orange County, it is worth more than 35% 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 427 Sievers Ave, Brea, CA?

The 2025 property tax bill for 427 Sievers Ave, Brea, CA was $2,245. The county assessed it at $165,963.

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