Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$888,078$423 / 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 $635,000 on Nov 30, 2017

18933 KNAPP ST

NORTHRIDGE, CA 91324
5
Beds
3
Baths
2,101 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.
1958
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

$888K
$823K low$953K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$635,000 · Nov 30, 2017

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$10,403 (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.$853,800 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$515,793
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$338,007
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$837,060

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.8 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
StyleThe architectural style of the home, such as ranch or colonial.Conventional
CountyLOS ANGELES
Effective Year BuiltAn adjusted build year that accounts for condition and major remodels. A big renovation can make a home count as newer than it is.1965
Lot (acres)The size of the land the home sits on, from county records.0.17
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.Wood Shingle
HeatingThe type of heating system in the home.Central
CoolingThe type of cooling or air conditioning in the home.Evaporative
FireplaceWhether the home has a fireplace, and what kind.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.Yes

Transaction History(12)

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(2)

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

E
Calahan Community CharterB-
Elementary · Grades KG–5 · 0.3 mi
M
Nobel Middle SchoolA
Middle · Grades 6–8 · 1.0 mi
H
Northridge Academy High SchoolB-
High · Grades 9–12 · 1.3 mi

District: Los Angeles Unified School District

Neighborhood · ZIP 91324These 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.100
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.117
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.571

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.93%
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.11%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.9%
PopulationHow many people live in this area.30,193
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.6,904 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$100,613
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$128,886
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.73%

Owner Tools

Do you own this home?
Claim this home

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

18933 Knapp St 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 less per square foot than 89% of homes in Northridge 91324
  • Bigger than 72% of homes in Los Angeles County
  • Has a smaller lot than 82% of homes in Northridge

What homes are worth in Northridge 91324

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

This home
$563K$2M

This home is worth more than 45% of homes in Northridge 91324.

How it measures up in Northridge 91324

The dot is this home. The mark in the middle is the typical home in Northridge 91324.

Estimated value$888,078
CheaperTypical $916,098Pricier

Pricier than 45% of homes nearby

Price per ft²$423
CheaperTypical $509Pricier

Pricier than 11% of homes nearby

Living area2,101 ft²
SmallerTypical 1,782 ft²Bigger

Bigger than 64% of homes nearby

Lot size0.17 ac
SmallerTypical 0.21 acBigger

Bigger than 24% of homes nearby

Year built1958
OlderTypical 1961Newer

Newer than 36% of homes nearby

How 18933 Knapp St ranks against every home in each area.
MeasureThis homeNorthridgeNorthridge 91324Los Angeles County
Estimated valuepricier than$888,07836% of homes45% of homes56% of homes
Price per ft²pricier than$42313% of homes11% of homes15% of homes
Living areabigger than2,101 ft²57% of homes64% of homes72% of homes
Lot sizebigger than0.17 ac18% of homes24% of homes54% of homes
Year builtnewer than195839% of homes36% of homes53% of homes

About 18933 Knapp St

How much is 18933 Knapp St, Northridge, CA worth?

The TopHap Estimate for 18933 Knapp St, Northridge, CA is $888,078 as of Oct 21, 2026. The likely range is $822,907 to $953,249. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 18933 Knapp St, Northridge, CA last sell?

18933 Knapp St, Northridge, CA last sold on Nov 30, 2017 for $635,000, according to the county's recorded deed. TopHap holds 5 recorded sales for this parcel.

How big is 18933 Knapp St, Northridge, CA?

18933 Knapp St, Northridge, CA has 5 bedrooms, 3 bathrooms, 2,101 square feet of living space and a 0.17-acre lot.

When was 18933 Knapp St, Northridge, CA built?

18933 Knapp St, Northridge, CA was built in 1958, making it 68 years old. It is a conventional home. The building has 1 story.

What schools serve 18933 Knapp St, Northridge, CA?

18933 Knapp St, Northridge, CA is assigned to Calahan Community Charter (elementary), rated B-; Nobel Middle School (middle), rated A; Northridge Academy High School (high), rated B-. All sit in Los Angeles Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 18933 Knapp St, Northridge, CA compare to other homes in Northridge 91324?

Among the 6,289 homes in Northridge 91324, it is worth more than 45% of them ($888,078 against a typical $916,098), its price per square foot is higher than 11% of them ($423 against a typical $509), it is bigger than 64% of them (2,101 ft² against a typical 1,782 ft²), its lot is bigger than 24% of them (0.17 ac against a typical 0.21 ac) and it is newer than 36% of them (1958 against a typical 1961). Measured against all of Los Angeles County, it is worth more than 56% 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 18933 Knapp St, Northridge, CA?

The 2025 property tax bill for 18933 Knapp St, Northridge, CA was $10,403. The county assessed it at $853,800.

More homes on Knapp St

Closest homes

More homes in Northridge 91324

Assigned schools

Explore the area

See this home in context

Open 18933 Knapp St on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map