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Single Family ResidenceResidential
$982,595$1,026 / 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 $565,000 on Jul 3, 2006

421 DELPHINE PL

FULLERTON, CA 92833
3
Beds
1
Baths
958 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.
0.15 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.
1
StoriesHow many floors the home has above ground.
5
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$983K
$915K low$1.1M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$565,000 · Jul 3, 2006

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$9,263 (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.$836,876 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$698,834
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$138,042
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$820,467

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.10 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.34%
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.0.2 percent flood zone

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.0.15
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(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.

Foreclosure Filings(4)

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

E
Fern Drive Elementary SchoolB
Elementary · Grades KG–6 · 0.3 mi
H
Sunny Hills High SchoolA
High · Grades 9–12 · 0.6 mi
M
D. Russell Parks Junior High SchoolA
Middle · Grades 7–8 · 1.2 mi

District: Fullerton Elementary School District

Neighborhood · ZIP 92833These 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.69
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 100.341

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.30%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.9.3%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.3%
PopulationHow many people live in this area.52,008
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.7,095 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$102,485
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$132,233
Average tempThe average temperature here across a full year.64°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.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

421 Delphine 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.

  • Among the highest price per square foot in Fullerton 92833
  • Smaller than 93% of homes in Fullerton 92833
  • Older than 95% of homes in Orange County

What homes are worth in Fullerton 92833

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

This home
$556K$2M

This home is worth more than 53% of homes in Fullerton 92833.

How it measures up in Fullerton 92833

The dot is this home. The mark in the middle is the typical home in Fullerton 92833.

Estimated value$982,595
CheaperTypical $957,699Pricier

Pricier than 53% of homes nearby

Price per ft²$1026
CheaperTypical $627Pricier

Pricier than almost all homes nearby

Living area958 ft²
SmallerTypical 1,599 ft²Bigger

Bigger than 7% of homes nearby

Lot size0.15 ac
SmallerTypical 0.16 acBigger

Bigger than 44% of homes nearby

Year built1950
OlderTypical 1965Newer

Newer than 9% of homes nearby

How 421 Delphine Pl ranks against every home in each area.
MeasureThis homeFullerton 92833Orange County
Estimated valuepricier than$982,59553% of homes38% of homes
Price per ft²pricier than$1026almost all homes92% of homes
Living areabigger than958 ft²7% of homes7% of homes
Lot sizebigger than0.15 ac44% of homes51% of homes
Year builtnewer than19509% of homes5% of homes

About 421 Delphine Pl

How much is 421 Delphine Pl, Fullerton, CA worth?

The TopHap Estimate for 421 Delphine Pl, Fullerton, CA is $982,595 as of Oct 21, 2026. The likely range is $915,087 to $1,050,103. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 421 Delphine Pl, Fullerton, CA last sell?

421 Delphine Pl, Fullerton, CA last sold on Jul 3, 2006 for $565,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 421 Delphine Pl, Fullerton, CA?

421 Delphine Pl, Fullerton, CA has 3 bedrooms, 1 bathrooms, 958 square feet of living space and a 0.15-acre lot.

When was 421 Delphine Pl, Fullerton, CA built?

421 Delphine Pl, Fullerton, CA was built in 1950, making it 76 years old. The building has 1 story.

What schools serve 421 Delphine Pl, Fullerton, CA?

421 Delphine Pl, Fullerton, CA is assigned to Fern Drive Elementary School (elementary), rated B; Sunny Hills High School (high), rated A; D. Russell Parks Junior High School (middle), rated A. All sit in Fullerton Elementary School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 421 Delphine Pl, Fullerton, CA compare to other homes in Fullerton 92833?

Among the 12,810 homes in Fullerton 92833, it is worth more than 53% of them ($982,595 against a typical $957,699), its price per square foot is higher than almost all of them ($1026 against a typical $627), it is bigger than 7% of them (958 ft² against a typical 1,599 ft²), its lot is bigger than 44% of them (0.15 ac against a typical 0.16 ac) and it is newer than 9% of them (1950 against a typical 1965). Measured against all of Orange County, it is worth more than 38% 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 Delphine Pl, Fullerton, CA?

The 2025 property tax bill for 421 Delphine Pl, Fullerton, CA was $9,263. The county assessed it at $836,876.

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