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Single Family ResidenceResidential
$1,338,544$405 / 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 90How 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
Last sold for $880,500 on Feb 21, 2020

270 THOMPSON AVE

CHATSWORTH, CA 91311
4
Beds
4
Baths
3,303 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.
0.21 ac
Lot SizeThe size of the land the home sits on, from county records.
1993
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
8
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

$1.3M
$1.2M low$1.5M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$880,500 · Feb 21, 2020

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$10,843 (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.$1,009,428 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$638,076
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$371,352
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$989,636

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.49
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
86
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
47
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
34
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
80
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
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
CountyVENTURA
Lot (acres)The size of the land the home sits on, from county records.0.21
FireplaceWhether the home has a fireplace, and what kind.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.No
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck · 569 ft²Patio · 76 ft²

Transaction History(7)

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
Knolls Elementary SchoolC-
Elementary · Grades KG–6 · 2.4 mi
H
Simi Valley High SchoolB
High · Grades 9–12 · 3.7 mi
M
Valley View Middle SchoolC-
Middle · Grades 6–8 · 5.7 mi

District: Simi Valley Unified School District

Neighborhood · ZIP 91311These 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.71
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.110
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.542

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.97%
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.6.2%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.8%
PopulationHow many people live in this area.39,425
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,548 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$107,306
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$137,663
Average tempThe average temperature here across a full year.63°F
Annual precipHow much rain and melted snow falls here in a typical year.20 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

270 Thompson 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 more than 86% of homes in Ventura County
  • Costs less per square foot than 87% of homes in Ventura County
  • Bigger than 93% of homes in Ventura County
  • Has a bigger lot than 69% of homes in Ventura County
  • Newer than 90% of homes in Chatsworth 91311

What homes are worth in Chatsworth 91311

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

This home
$464K$2.6M

This home is worth more than 84% of homes in Chatsworth 91311.

How it measures up in Chatsworth 91311

The dot is this home. The mark in the middle is the typical home in Chatsworth 91311.

Estimated value$1,338,544
CheaperTypical $916,323Pricier

Pricier than 84% of homes nearby

Price per ft²$405
CheaperTypical $467Pricier

Pricier than 19% of homes nearby

Living area3,303 ft²
SmallerTypical 1,875 ft²Bigger

Bigger than 89% of homes nearby

Lot size0.21 ac
SmallerTypical 0.27 acBigger

Bigger than 36% of homes nearby

Year built1993
OlderTypical 1975Newer

Newer than 90% of homes nearby

How 270 Thompson Ave ranks against every home in each area.
MeasureThis homeChatsworth 91311Ventura County
Estimated valuepricier than$1,338,54484% of homes86% of homes
Price per ft²pricier than$40519% of homes13% of homes
Living areabigger than3,303 ft²89% of homes93% of homes
Lot sizebigger than0.21 ac36% of homes69% of homes
Year builtnewer than199390% of homes80% of homes

About 270 Thompson Ave

How much is 270 Thompson Ave, Chatsworth, CA worth?

The TopHap Estimate for 270 Thompson Ave, Chatsworth, CA is $1,338,544 as of Sep 24, 2026. The likely range is $1,199,235 to $1,477,853. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 270 Thompson Ave, Chatsworth, CA last sell?

270 Thompson Ave, Chatsworth, CA last sold on Feb 21, 2020 for $880,500, according to the county's recorded deed. TopHap holds 5 recorded sales for this parcel.

How big is 270 Thompson Ave, Chatsworth, CA?

270 Thompson Ave, Chatsworth, CA has 4 bedrooms, 4 bathrooms, 3,303 square feet of living space and a 0.21-acre lot.

When was 270 Thompson Ave, Chatsworth, CA built?

270 Thompson Ave, Chatsworth, CA was built in 1993, making it 33 years old. The building has 2 stories.

What schools serve 270 Thompson Ave, Chatsworth, CA?

270 Thompson Ave, Chatsworth, CA is assigned to Knolls Elementary School (elementary), rated C-; Simi Valley High School (high), rated B; Valley View Middle School (middle), rated C-. All sit in Simi Valley Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 270 Thompson Ave, Chatsworth, CA compare to other homes in Chatsworth 91311?

Among the 11,363 homes in Chatsworth 91311, it is worth more than 84% of them ($1,338,544 against a typical $916,323), its price per square foot is higher than 19% of them ($405 against a typical $467), it is bigger than 89% of them (3,303 ft² against a typical 1,875 ft²), its lot is bigger than 36% of them (0.21 ac against a typical 0.27 ac) and it is newer than 90% of them (1993 against a typical 1975). Measured against all of Ventura County, it is worth more than 86% 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 270 Thompson Ave, Chatsworth, CA?

The 2025 property tax bill for 270 Thompson Ave, Chatsworth, CA was $10,843. The county assessed it at $1,009,428.

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