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Single Family ResidenceResidential
$846,217$538 / 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 91How 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

23521 SIDLEE PL

HARBOR CITY, CA 90710
4
Beds
2
Baths
1,574 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.
0.13 ac
Lot SizeThe size of the land the home sits on, from county records.
1969
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
9
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$846K
$771K low$922K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$11,091 (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.$912,636 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$730,110
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$182,526
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$894,743

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.6 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.6%
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
StyleThe architectural style of the home, such as ranch or colonial.Conventional
CountyLOS ANGELES
Lot (acres)The size of the land the home sits on, from county records.0.13
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Composition Shingle
HeatingThe type of heating system 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.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.

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

E
President Avenue Elementary SchoolC+
Elementary · Grades 1–6 · 0.5 mi
H
Narbonne High SchoolB-
High · Grades 9–12 · 0.6 mi
M
Fleming Middle SchoolC+
Middle · Grades 6–8 · 1.4 mi

District: Los Angeles Unified School District

Neighborhood · ZIP 90710These 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.116
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.112
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.485

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.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.23%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.13%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.6%
PopulationHow many people live in this area.26,688
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.11,011 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$76,249
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$103,390
Average tempThe average temperature here across a full year.63°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.73%

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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

23521 Sidlee 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 70% of homes in Harbor City 90710
  • Has a smaller lot than 81% of homes in Los Angeles County
  • Newer than 66% of homes in Los Angeles County

What homes are worth in Harbor City 90710

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

This home
$454K$1.1M

This home is worth more than 64% of homes in Harbor City 90710.

How it measures up in Harbor City 90710

The dot is this home. The mark in the middle is the typical home in Harbor City 90710.

Estimated value$846,217
CheaperTypical $787,461Pricier

Pricier than 64% of homes nearby

Price per ft²$538
CheaperTypical $494Pricier

Pricier than 70% of homes nearby

Living area1,574 ft²
SmallerTypical 1,574 ft²Bigger

Bigger than 52% of homes nearby

Lot size0.13 ac
SmallerTypical 0.16 acBigger

Bigger than 22% of homes nearby

Year built1969
OlderTypical 1969Newer

Newer than 52% of homes nearby

How 23521 Sidlee Pl ranks against every home in each area.
MeasureThis homeHarbor City 90710Los Angeles County
Estimated valuepricier than$846,21764% of homes51% of homes
Price per ft²pricier than$53870% of homes40% of homes
Living areabigger than1,574 ft²52% of homes49% of homes
Lot sizebigger than0.13 ac22% of homes19% of homes
Year builtnewer than196952% of homes66% of homes

About 23521 Sidlee Pl

How much is 23521 Sidlee Pl, Harbor City, CA worth?

The TopHap Estimate for 23521 Sidlee Pl, Harbor City, CA is $846,217 as of Sep 24, 2026. The likely range is $770,885 to $921,549. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 23521 Sidlee Pl, Harbor City, CA last sell?

23521 Sidlee Pl, Harbor City, CA last sold on Oct 22, 2025, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 23521 Sidlee Pl, Harbor City, CA?

23521 Sidlee Pl, Harbor City, CA has 4 bedrooms, 2 bathrooms, 1,574 square feet of living space and a 0.13-acre lot.

When was 23521 Sidlee Pl, Harbor City, CA built?

23521 Sidlee Pl, Harbor City, CA was built in 1969, making it 57 years old. It is a conventional home. The building has 1 story.

What schools serve 23521 Sidlee Pl, Harbor City, CA?

23521 Sidlee Pl, Harbor City, CA is assigned to President Avenue Elementary School (elementary), rated C+; Narbonne High School (high), rated B-; Fleming Middle School (middle), rated C+. All sit in Los Angeles Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 23521 Sidlee Pl, Harbor City, CA compare to other homes in Harbor City 90710?

Among the 5,725 homes in Harbor City 90710, it is worth more than 64% of them ($846,217 against a typical $787,461), its price per square foot is higher than 70% of them ($538 against a typical $494), it is bigger than 52% of them (1,574 ft² against a typical 1,574 ft²), its lot is bigger than 22% of them (0.13 ac against a typical 0.16 ac) and it is newer than 52% of them (1969 against a typical 1969). Measured against all of Los Angeles County, it is worth more than 51% 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 23521 Sidlee Pl, Harbor City, CA?

The 2025 property tax bill for 23521 Sidlee Pl, Harbor City, CA was $11,091. The county assessed it at $912,636.

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